Re: [Emc-users] Milling Aluminum.

[Erik Friesen]

Free use terms = <$100,000 per year.

Non Free = you should be able to afford it.

On Thu, Apr 13, 2017 at 5:16 PM, Gregg Eshelman  wrote:

> Do test runs in wood or machinable wax or plastic. Could try spraying a
> dry graphite film on the cutter. NAPA auto parts has spray cans of that.
> Don't mill the crappy aluminum alloy.
>
> On Thursday, April 13, 2017, 8:46:03 AM MDT, Todd Zuercher <
> zuerc...@embarqmail.com> wrote:Here I go again.  Unfortunately, the
> aluminum jig was a big hit, and now they want more.  So I thought I'd take
> a crack at a trochoirdal milling path.  My first try gave mixed results.
> Looking for advice.
> My CAM software still doesn't have a trochoirdal option, so a faked it
> with a line of small circles strung together.
> I tried milling with a Vortex 1230 1/4" solid carbide up spiral @ 18000rpm
> feed rate set to 100ipm (but due to machine acceleration limits the feed
> was really only 60ipm).  The path was made with 3/8" circles with a female
> climb milling path strung together with a 0.05" step, milling 1/4" deep.
> It cut beautifully, for about an inch, then the flutes clogged and the bit
> promptly broke.  This was a dry test cut in the Mic-6 chewing gum and I
> forgot to turn on the air blast.
>
> Suggestions on where I should go from here?  Smaller step?  Lower or
> higher RPM? Larger circle (to allow faster feed)?  I know Getting the air
> blast turned on and a squirt of WD-40 will help, but will that be enough?
> Better Aluminum stock should also help, I have 3 sheets of 6061 for the
> next ones, but I would like to cut a few things from the Mic-6 scrap left
> over from the last one.
>
> 
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Re: [Emc-users] More Renishaw questions

[Erik Friesen]

Do you have an OMI, or are you trying to connect directly with your own?

On Thu, Mar 23, 2017 at 2:28 PM, Ken Strauss 
wrote:

> >From postings on this list earlier this year I believe that Sarah
> Armstrong
> and Rene Hopf (and perhaps others) have had some success interfacing to a
> Renishaw MP10 or similar probe. I recently got an MP7 so I'm very
> interested.
>
> Can anyone provide details of the electronics that they used used to detect
> and cleanup the IR signal? What was the range for reliable pickup?
>
>
>
> 
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Re: [Emc-users] Keystick and xemc

[Erik Friesen]

I had considered using one for a springboard for a haas/pro gui, but
not sure what I'll do at this point.  If any of you have ever used a
haas control, I think you won't be completely happy with most of the
gui's available, although gmoccapy is alright.

On Wed, Oct 19, 2016 at 6:36 PM, Sebastian Kuzminsky <s...@highlab.com> wrote:
> On 10/18/2016 03:13 PM, Erik Friesen wrote:
>> Is nml close enough to integrate without breaking compile on master?
>>
>>
>> On Tue, Oct 18, 2016 at 3:40 PM, andy pugh <bodge...@gmail.com> wrote:
>>> On 18 October 2016 at 20:30, Erik Friesen <e...@aercon.net> wrote:
>>>> Does anyone know where the source is for Keystick and xemc?  I don't
>>>> see it under linuxcnc-master/src/emc/usr_intf or anywhere else.
>>>
>>> They were removed from Master, but can still be found in older branches:
>>> http://git.linuxcnc.org/gitweb?p=linuxcnc.git;a=tree;f=src/emc/usr_intf;h=4a4ba42f4673e94f168b6288024d97d3649baeed;hb=refs/heads/2.6
>
> I'm not sure what this question is asking.
>
> xemc and keystick were removed in master because they needed
> maintenance, and a a call-for-maintainers did not result in anyone
> stepping forward.
>
> https://sourceforge.net/p/emc/mailman/emc-developers/thread/20151221024211.GF92296%40unpythonic.net/#msg34710198
>
> If you'd like to help maintain either or both of these GUIs, i'd be
> happy to help point you in the right direction.
>
>
> --
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>
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Re: [Emc-users] Keystick and xemc

[Erik Friesen]

Is nml close enough to integrate without breaking compile on master?


On Tue, Oct 18, 2016 at 3:40 PM, andy pugh <bodge...@gmail.com> wrote:
> On 18 October 2016 at 20:30, Erik Friesen <e...@aercon.net> wrote:
>> Does anyone know where the source is for Keystick and xemc?  I don't
>> see it under linuxcnc-master/src/emc/usr_intf or anywhere else.
>
> They were removed from Master, but can still be found in older branches:
> http://git.linuxcnc.org/gitweb?p=linuxcnc.git;a=tree;f=src/emc/usr_intf;h=4a4ba42f4673e94f168b6288024d97d3649baeed;hb=refs/heads/2.6
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
>
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[Emc-users] Keystick and xemc

[Erik Friesen]

Does anyone know where the source is for Keystick and xemc?  I don't
see it under linuxcnc-master/src/emc/usr_intf or anywhere else.

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[Emc-users] Cycle time discussion

[Erik Friesen]

I have been watching my vintage 1996 haas, and have begun to notice
all the non cutting times, pauses, etc.  It really seems that non
rapid, between rapid, and other slow motions are overlooked time
costs.  Note the non machining pauses on this DM-1
http://www.haascnc.com/video.asp?mode=demos=c5-XXw0gLxg

I see this on my machine too, rapids don't blend, so G0Z1 followed by
G0Z5 will always have a noticeable pause.

How does lcnc handle rapids in this scenario?

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Re: [Emc-users] Misc implementation questions

[Erik Friesen]

Thanks for this info.

Has anyone implemented spindle load monitoring per tool like the Haas
control?  What would this take, adding a line in the tool table plus
some tweaks?



On Mon, Oct 17, 2016 at 11:03 AM, Stuart Stevenson <stus...@gmail.com> wrote:
> You can find explanations in the documentation
>
>
> HOME_OFFSET =0.0 - the amount you want to
> table to move from the homed zero position after the index pulse is found
> and the encoder position has been set to zero. You don't necessarily need
> to know exactly how this works prior to homing. Just leave zero, home the
> machine and see what happens.
> Then put a value in, home the machine and see what happens.
> You can then adjust what value you put in to achieve your desired home
> position.
>
> HOME_SEARCH_VEL =20.0 - the speed to move the axis when
> you are homing (+ or - determine direction)
>
> HOME_LATCH_VEL = 20.0   -  the speed to move the axis
> after hitting the home (or limit) switch while searching for the index
> pulse (again + or - determines direction)
>
> HOME_USE_INDEX = NO- YES here tells the controller
> to read the encoder index pulse connection. The encoder board then sets the
> position to zero upon seeing (finding) the index pulse.
>
> HOME_IGNORE_LIMITS = NO- YES here tells the control to
> ignore the axis limit switches while homing. This allow the limit switch to
> also be used as a home switch to start the search for the index pulse.
>
> HOME_SEQUENCE = 1   - check the manual for using
> this
> HOME_IS_SHARED = 1   - check the manual for using
> this
>
> These parameters are found in the ini file
>
>
>
> On Mon, Oct 17, 2016 at 9:03 AM, andy pugh <bodge...@gmail.com> wrote:
>
>> On 17 October 2016 at 14:40, Erik Friesen <e...@aercon.net> wrote:
>> > Ok, but what about homing?
>>
>> I think homing uses the encoder "position" pin, which zeroes when index
>> resets.
>>
>> --
>> atp
>> "A motorcycle is a bicycle with a pandemonium attachment and is
>> designed for the especial use of mechanical geniuses, daredevils and
>> lunatics."
>> — George Fitch, Atlanta Constitution Newspaper, 1916
>>
>> 
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Re: [Emc-users] Misc implementation questions

[Erik Friesen]

Ok, but what about homing?

On Mon, Oct 17, 2016 at 9:21 AM, andy pugh <bodge...@gmail.com> wrote:
> On 17 October 2016 at 13:43, Erik Friesen <e...@aercon.net> wrote:
>> I still don't follow though, how mesa hardware uses the index.  Does
>> it zero it the first time, or how does that bubble up to lcnc?
>
> bldc uses the raw counts and holds its own index offset.
>
>
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
>
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Re: [Emc-users] Misc implementation questions

[Erik Friesen]

I still don't follow though, how mesa hardware uses the index.  Does
it zero it the first time, or how does that bubble up to lcnc?

On Mon, Oct 17, 2016 at 8:18 AM, andy pugh <bodge...@gmail.com> wrote:
> On 17 October 2016 at 12:59, Erik Friesen <e...@aercon.net> wrote:
>>> The "bldc" component offers a few options. If there are no hall
>>> signals then using the encoder index (if there is one) is probably
>>> best.
>>
>> So what, blind feed the thing at the beginning?
>
> Yes, the component can just feed a rotating field to the motor until
> index is seen.
> This does mean that the machine will move a bit during the motor-homing phase.
>
>> Also, I don't seen anywhere how to go about using a home switch +
>> encoder index to accurately home.
>
> I haven't tried that in conjunction with index-based commutation, but
> I don't think that they would interfere with each other.
> (I think that I would normally choose to home the motor commutation at
> machine-on rather than as part of the homing sequence.
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
>
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Re: [Emc-users] Misc implementation questions

[Erik Friesen]

> The "bldc" component offers a few options. If there are no hall
> signals then using the encoder index (if there is one) is probably
> best.

So what, blind feed the thing at the beginning?

Also, I don't seen anywhere how to go about using a home switch +
encoder index to accurately home.

On Sat, Oct 15, 2016 at 2:23 PM, andy pugh <bodge...@gmail.com> wrote:
> On 15 October 2016 at 14:54, Erik Friesen <e...@aercon.net> wrote:
>> #1.  What method could be used for a tool change recovery sequence?
>
> That rather depends on what it takes to recover the situation, but
> there is scope for reporting tool-changer errors through HAL and a
> "magic comment"
> If you control the tool change sequence through a G-code subroutine you can 
> use
> http://linuxcnc.org/docs/2.7/html/remap/remap.html#_error_handling_dealing_with_abort
>
>> #2.  Door switch safety?
>
> Again, it rather depends on what behaviour you require. The logic can
> be configured many different ways in HAL.
>
>> #3.  For a brushless servo system without halls, how to get phases in
>> sync with encoder.
>
> The "bldc" component offers a few options. If there are no hall
> signals then using the encoder index (if there is one) is probably
> best.
> http://linuxcnc.org/docs/2.7/html/man/man9/bldc.9.html
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
>
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[Emc-users] Misc implementation questions

[Erik Friesen]

#1.  What method could be used for a tool change recovery sequence?

#2.  Door switch safety?

#3.  For a brushless servo system without halls, how to get phases in
sync with encoder.

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Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

I guess I am not following how a hardware interrupt gets mapped to the
userspace/lcnc servo thread.  Any pointers on this?

On Fri, Oct 14, 2016 at 11:45 AM, Jon Elson <el...@pico-systems.com> wrote:
> On 10/14/2016 08:11 AM, Charles Steinkuehler wrote:
>> On 10/14/2016 7:11 AM, Erik Friesen wrote:
>>> @Sebastian Kuzminsky Thanks for those docs.
>>>
>>> @Charles Steinkuehler
>>>
>>> How would you link an interrupt to linuxcnc?
>> Setup a Mesa card with a periodic timer that triggers a capture of the
>> current position and generates an interrupt (the Mesa VHDL code
>> already supports this).  In the servo thread, instead of waiting on a
>> software timer, you wait on the hardware interrupt.
>>
> Pico Systems motion control boards also support this.  I've
> wanted to set this up on X86 through the parallel port for
> some time (since about 2002, in fact) but it would take some
> serious hacking on the PPMC driver.  It looks like it might
> be easier with the uspace / rt-preempt kernel than with
> rtai.  It would reduce latency/jitter to ns levels.
>
> Not sure if this is a project suitable for the codefest, but
> I'll think about it.
>
> Jon
>
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Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

@Sebastian Kuzminsky Thanks for those docs.

@Charles Steinkuehler

How would you link an interrupt to linuxcnc?



On Thu, Oct 13, 2016 at 9:15 PM, Charles Steinkuehler
 wrote:
> On 10/13/2016 8:01 PM, Chris Albertson wrote:
>>
>> For sophisticated motion control you really need both. (my internet is
>> in robots, no as much CNC) One to run an OS and drive a user interface
>> and screen and talk over a network and so on.  and a smaller processor
>> to make I/O lines go up and down and drive motors and read encoders.
>>  In LinuxCNC we sometimes have two processors a PC and a Mesa card.
>> On an ARM based CNC, I think you'd see an "A" type perhaps it is a
>> Raspberry Pi or perhaps it is an iPhone app.  Then you'd have "M"
>> types physically driving the hardware.
>
> This is what I like about the BeagleBone (the PRU substitutes for a
> Cortex-M for hard-real-time bit-twiddling) and the Xilinx/Altera
> SoC+FPGA combinations (where you can put the Mesa open-source VHDL
> firmware in the FPGA).
>
> It works particularly well if you drive the servo-thread timing via
> interrupts from the hardware (with position captured by the hardware
> when it fires the interrupt), thus side-stepping the relatively poor
> ARM Cortex-A interrupt latency and jitter.
>
> --
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> char...@steinkuehler.net
>
>
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Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

Interesting info on spidev, but it doesn't surprise me.  Isn't that
because they are non blocking read/writes to manage slow spi clocks,
etc?  The calls end up in spi_sync, that says "This call may only be
used from a context that may sleep" so I would expect not so good
performance with this.  My first thought would be a blocking/non
sleeping hardware call, although I am not clear if this would require
direct register calls to the spi memory locations.  With a 10mhz spi
ic maybe that would take too long.

On Thu, Oct 13, 2016 at 5:33 PM, Jeff Epler  wrote:
> If your device uses PREEMPT-RT realtime, then you can use any userspace
> interface (ioctl, read, write, recv, send, etc) that gives you
> acceptable latency in practice.  Otherwise, you basically get to do
> direct memory-mapped control of the applicable registers in your SOC,
> because for xenomai and rtai you can't use standard kernel or syscall
> interfaces in realtime context (but you can for setup/cleanup code, for
> instance to get actually map MMIO regions)
>
> The SPI hardware interface, with /dev/spidev as a userspace API, is
> perfect on paper; however, I have experenced that the quality of the
> driver implementation is often poor, both in latency and in, well,
> actually working!
>
> Here are some notes about various ARM SBCs and SPI interface hardware.
> Except for odroid c2, these are all my direct experience.
>
> odroid u3: /dev/spidev working with good latency (good enough for 1kHz)
> after kernel driver modifications, linuxcnc driver hm2_spi, mesa 7i90
> fpga card
>
> odroid c2: reported non-working (only supports 8-bit transfers)
>
> odroid xu4: does not honor spidev byte order ioctl (hardcoded in
> devicetree).  poor latency even after kernel driver modifications
> (probably ok for 500Hz, probably not for 1kHz).  hm2_spi driver again.
>
> raspberry pi 3: only supports 8-bit transfers.  contributed
> register-level driver, confirmed working on preempt-rt (only--will need
> work for other supported rtoses), hm2_rpspi
>
> Jeff
>
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Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

Haas drives are basically pwm amplifiers that apparently need a 5v+- signal
120 degrees apart.  Why bother with pwm, why not just put a good spi dac
controlled from the i.mx6?  Then add a couple encoder ic's, or run a pic32
or similar to handle the qei.

On Thu, Oct 13, 2016 at 2:58 PM, Nicklas Karlsson <
nicklas.karlsso...@gmail.com> wrote:

> Then you would need a powerful analog amplifier, unless it is a control
> signal for a driver. An analog amplifier waste energy, a more efficient
> method is to use an inverter card and then you use the PWM module in the
> micro controller to generate signals for the inverter.
>
> You also need to chose a suitable micro controller, the high end usually
> are good for hard drives and similar but not for PWM generation. Micro
> controllers with a Cortex-M* CPU usually have support PWM generation and
> are more or less built for this purpose, they may be cheap from around $1
> each in large quantity and maybe $10-$20 for the more powerful.
>
>
>
> On Thu, 13 Oct 2016 14:24:54 -0400
> Erik Friesen <e...@aercon.net> wrote:
>
> > In this scenario, the dac would be driving a bldc, so it would need to be
> > updated around 4-8khz.
> >
> > On Thu, Oct 13, 2016 at 2:24 PM, Erik Friesen <e...@aercon.net> wrote:
> >
> > > To clarify my question, I am trying to understand at what level lcnc
> > > accesses hardware peripherals.  For example, suppose I build a board
> with
> > > an spi dac peripheral to the arm, as well as write the kernel driver,
> if
> > > necessary.  What type of glue do I need to provide in this situation?
> > >
> > > On Thu, Oct 13, 2016 at 1:50 PM, Nicklas Karlsson <
> > > nicklas.karlsso...@gmail.com> wrote:
> > >
> > >> On the Cortex-M* model usually used on micro controllers there use to
> be
> > >> a reference manual. Usually there is register to configure pin
> > >> functionality, GPIO is a common default value and a register to select
> > >> direction input or output.
> > >>
> > >> There use to a library but software complexity become lower by
> accessing
> > >> the registers directly unless there is a need to change things
> dynamically.
> > >> The libraries are usually written for dynamic access while software
> almost
> > >> always only have need for simpler static access. To register callback
> > >> functions at an interrupt handler is a perfect example, if the same
> > >> function(s) is registered at every startup they could be added
> statically
> > >> and it is possible to generate a call graph.
> > >>
> > >>
> > >> On Thu, 13 Oct 2016 13:27:55 -0400
> > >> Erik Friesen <e...@aercon.net> wrote:
> > >>
> > >> > Resurrecting this thread, can anyone point me to docs, or other info
> > >> what
> > >> > it takes to link GPIO, or SPI devices into linuxcnc on an arm?  On
> what
> > >> > level does this happen?  Userspace, Kernelspace, etc?  I have done a
> > >> bit of
> > >> > kernel programming for the i.mx6.
> > >> >
> > >> > On Thu, Mar 24, 2016 at 8:19 AM, Ron Ginger <
> rongin...@roadrunner.com>
> > >> > wrote:
> > >> >
> > >> > > I was helping a commercial screw machine shop that had a couple
> little
> > >> > > KX1 mills. One was getting rather tired after 5 or 6 years of
> > >> production
> > >> > > use and having repeatability problem. I was speaking with the
> general
> > >> > > manager and asked "well how long do you expect a machine to
> last?" and
> > >> > > without a hint of a smile he whipped back "40 years"
> > >> > >
> > >> > > The KX1 was installed less then 50 feet from a row of screw
> machines
> > >> > > maybe as old as I am (73 years) and they were clanking away
> dropping
> > >> > > parts into a bin.
> > >> > >
> > >> > > ron ginger
> > >> > >
> > >> > > > Who wants to use and maintain (if it is possible) an original
> CNC
> > >> control
> > >> > > > made prior to 2000 ??
> > >> > > >
> > >> > > > Dave
> > >> > > >
> > >> > >
> > >> > >
> > >> > > --

Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

In this scenario, the dac would be driving a bldc, so it would need to be
updated around 4-8khz.

On Thu, Oct 13, 2016 at 2:24 PM, Erik Friesen <e...@aercon.net> wrote:

> To clarify my question, I am trying to understand at what level lcnc
> accesses hardware peripherals.  For example, suppose I build a board with
> an spi dac peripheral to the arm, as well as write the kernel driver, if
> necessary.  What type of glue do I need to provide in this situation?
>
> On Thu, Oct 13, 2016 at 1:50 PM, Nicklas Karlsson <
> nicklas.karlsso...@gmail.com> wrote:
>
>> On the Cortex-M* model usually used on micro controllers there use to be
>> a reference manual. Usually there is register to configure pin
>> functionality, GPIO is a common default value and a register to select
>> direction input or output.
>>
>> There use to a library but software complexity become lower by accessing
>> the registers directly unless there is a need to change things dynamically.
>> The libraries are usually written for dynamic access while software almost
>> always only have need for simpler static access. To register callback
>> functions at an interrupt handler is a perfect example, if the same
>> function(s) is registered at every startup they could be added statically
>> and it is possible to generate a call graph.
>>
>>
>> On Thu, 13 Oct 2016 13:27:55 -0400
>> Erik Friesen <e...@aercon.net> wrote:
>>
>> > Resurrecting this thread, can anyone point me to docs, or other info
>> what
>> > it takes to link GPIO, or SPI devices into linuxcnc on an arm?  On what
>> > level does this happen?  Userspace, Kernelspace, etc?  I have done a
>> bit of
>> > kernel programming for the i.mx6.
>> >
>> > On Thu, Mar 24, 2016 at 8:19 AM, Ron Ginger <rongin...@roadrunner.com>
>> > wrote:
>> >
>> > > I was helping a commercial screw machine shop that had a couple little
>> > > KX1 mills. One was getting rather tired after 5 or 6 years of
>> production
>> > > use and having repeatability problem. I was speaking with the general
>> > > manager and asked "well how long do you expect a machine to last?" and
>> > > without a hint of a smile he whipped back "40 years"
>> > >
>> > > The KX1 was installed less then 50 feet from a row of screw machines
>> > > maybe as old as I am (73 years) and they were clanking away dropping
>> > > parts into a bin.
>> > >
>> > > ron ginger
>> > >
>> > > > Who wants to use and maintain (if it is possible) an original CNC
>> control
>> > > > made prior to 2000 ??
>> > > >
>> > > > Dave
>> > > >
>> > >
>> > >
>> > > 
>> > > --
>> > > Transform Data into Opportunity.
>> > > Accelerate data analysis in your applications with
>> > > Intel Data Analytics Acceleration Library.
>> > > Click to learn more.
>> > > http://pubads.g.doubleclick.net/gampad/clk?id=278785351=/4140
>> > > ___
>> > > Emc-users mailing list
>> > > Emc-users@lists.sourceforge.net
>> > > https://lists.sourceforge.net/lists/listinfo/emc-users
>> > >
>> > 
>> --
>> > Check out the vibrant tech community on one of the world's most
>> > engaging tech sites, SlashDot.org! http://sdm.link/slashdot
>> > ___
>> > Emc-users mailing list
>> > Emc-users@lists.sourceforge.net
>> > https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>> 
>> --
>> Check out the vibrant tech community on one of the world's most
>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
>> ___
>> Emc-users mailing list
>> Emc-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>
>
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Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

To clarify my question, I am trying to understand at what level lcnc
accesses hardware peripherals.  For example, suppose I build a board with
an spi dac peripheral to the arm, as well as write the kernel driver, if
necessary.  What type of glue do I need to provide in this situation?

On Thu, Oct 13, 2016 at 1:50 PM, Nicklas Karlsson <
nicklas.karlsso...@gmail.com> wrote:

> On the Cortex-M* model usually used on micro controllers there use to be a
> reference manual. Usually there is register to configure pin functionality,
> GPIO is a common default value and a register to select direction input or
> output.
>
> There use to a library but software complexity become lower by accessing
> the registers directly unless there is a need to change things dynamically.
> The libraries are usually written for dynamic access while software almost
> always only have need for simpler static access. To register callback
> functions at an interrupt handler is a perfect example, if the same
> function(s) is registered at every startup they could be added statically
> and it is possible to generate a call graph.
>
>
> On Thu, 13 Oct 2016 13:27:55 -0400
> Erik Friesen <e...@aercon.net> wrote:
>
> > Resurrecting this thread, can anyone point me to docs, or other info what
> > it takes to link GPIO, or SPI devices into linuxcnc on an arm?  On what
> > level does this happen?  Userspace, Kernelspace, etc?  I have done a bit
> of
> > kernel programming for the i.mx6.
> >
> > On Thu, Mar 24, 2016 at 8:19 AM, Ron Ginger <rongin...@roadrunner.com>
> > wrote:
> >
> > > I was helping a commercial screw machine shop that had a couple little
> > > KX1 mills. One was getting rather tired after 5 or 6 years of
> production
> > > use and having repeatability problem. I was speaking with the general
> > > manager and asked "well how long do you expect a machine to last?" and
> > > without a hint of a smile he whipped back "40 years"
> > >
> > > The KX1 was installed less then 50 feet from a row of screw machines
> > > maybe as old as I am (73 years) and they were clanking away dropping
> > > parts into a bin.
> > >
> > > ron ginger
> > >
> > > > Who wants to use and maintain (if it is possible) an original CNC
> control
> > > > made prior to 2000 ??
> > > >
> > > > Dave
> > > >
> > >
> > >
> > > 
> > > --
> > > Transform Data into Opportunity.
> > > Accelerate data analysis in your applications with
> > > Intel Data Analytics Acceleration Library.
> > > Click to learn more.
> > > http://pubads.g.doubleclick.net/gampad/clk?id=278785351=/4140
> > > ___
> > > Emc-users mailing list
> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> > >
> > 
> --
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> ___
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> https://lists.sourceforge.net/lists/listinfo/emc-users
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Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

Resurrecting this thread, can anyone point me to docs, or other info what
it takes to link GPIO, or SPI devices into linuxcnc on an arm?  On what
level does this happen?  Userspace, Kernelspace, etc?  I have done a bit of
kernel programming for the i.mx6.

On Thu, Mar 24, 2016 at 8:19 AM, Ron Ginger 
wrote:

> I was helping a commercial screw machine shop that had a couple little
> KX1 mills. One was getting rather tired after 5 or 6 years of production
> use and having repeatability problem. I was speaking with the general
> manager and asked "well how long do you expect a machine to last?" and
> without a hint of a smile he whipped back "40 years"
>
> The KX1 was installed less then 50 feet from a row of screw machines
> maybe as old as I am (73 years) and they were clanking away dropping
> parts into a bin.
>
> ron ginger
>
> > Who wants to use and maintain (if it is possible) an original CNC control
> > made prior to 2000 ??
> >
> > Dave
> >
>
>
> 
> --
> Transform Data into Opportunity.
> Accelerate data analysis in your applications with
> Intel Data Analytics Acceleration Library.
> Click to learn more.
> http://pubads.g.doubleclick.net/gampad/clk?id=278785351=/4140
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
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Re: [Emc-users] Haas thoughts

[Erik Friesen]

So assuming I used a 7i48, when does the 3ppwmgen get updated?  In the base
thread?

On Wed, Oct 12, 2016 at 11:55 AM, Mark  wrote:

> On 10/12/2016 09:54 AM, Gene Heskett wrote:
> > You mentioned gedit, which gets my attention.  That "thing" has scrambled
> > a file for me for the very last time. I don't even install it on a fresh
> > install, but nano to avoid remote x problems, and geany for a gedit-like
> > editor that has yet to record or miss-record, usually because I am
> > typing on a membrane covered keyboard and don't hit the key hard enough.
> >
> > When I started to make TLM work with a 5i25 card because software
> > stepping wasn't fast enough, I had to nuke the .ini and .hal files and
> > start from scratch with a fresh run of stepperconf in the first month
> > while I was adding this and that to complete the working config.
> > About every 9 or 10 times I called up gedit to fix a typu, I would fine
> > the files was scrambled by picking up a kilobyte of it and randomly
> > inserting it 2 or 3 other places in the file, with the start of the
> > insert being mid-line of the inserted section, and inserted mid-line
> > where it was inserted.
> >
> > Save yourself such potential gcodeing headaches by making the default
> > editor geany in the axis.ini file. IMO gedit is a TTD, a Textually
> > Transmitted Disease.
>
> You must have something inexplicably incorrect.  I've used gedit for
> years and never ran into any of the problems you've had with it, running
> it either locally or over the network.  And that's with a bunch of
> plugins installed, both for software development work and for the G Code
> editing.
>
> Mark
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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Re: [Emc-users] Haas thoughts

[Erik Friesen]

Does or doesn't LCNC support softdmc?

Correct me if I am wrong here, but my calcs are these.

 I can't find a pole count for the Yaskawa servo motors, but I assume they
are 8 poles.  Encoder counts are 32768 per rev, 6mm ballscrews.

So at 700IPM, that is 50 Rounds per second, encoders right at 1.6mhz

50 RPS * 8 Poles = 400 Motor cycles per second.

400 MCPS * 32?? = 12800hz needed servo period?  This seems a bit out of
reach of being handled in software, and I am not sure that 32 steps would
be enough.

On Wed, Oct 12, 2016 at 7:35 AM, Erik Friesen <e...@aercon.net> wrote:

> It uses an atmel chip.  However, that isn't the hangup to me.  I see
> context switching as a real challenge.  So you hit the edit button, then
> what?  Open gedit?  I'd really like to limit GUI excursions and control the
> whole thing closer than that.
>
> On Tue, Oct 11, 2016 at 11:16 PM, Gregg Eshelman <g_ala...@yahoo.com>
> wrote:
>
>> Look on the back of the keyboard for microchips, or on a board that the
>> keyboard connects to. Google the numbers to see what they are.
>>
>> I'd thought about hoking up the keyboard from the Anilam Crusader 2
>> system that was on my big mill. Shouldn't have been too difficult since a
>> cable went from the keyboard to another small board with a matrix to RS232C
>> chip. Would have mostly been figuring out the pinout of the header on the
>> adapter board then setting up a text editor to take input from a COM port,
>> then poking every button to see what characters it sent.
>>
>>
>>   From: Erik Friesen <e...@aercon.net>
>>  To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net>
>>  Sent: Tuesday, October 11, 2016 6:59 AM
>>  Subject: [Emc-users] Haas thoughts
>>
>> Are any of these items valid any more?
>>
>> http://blog.cnccookbook.com/2014/12/16/10-features-pros-hobb
>> y-cnc-controllers-dont/
>>
>> What would it take (software wise) to fully integrate a haas keypad so
>> that
>> most of the functions would be usable?  The ones I see as a challenge are
>> items like Posit, Offset, and all the edit functions.
>>
>> Reference keypad http://aercon.net/Public/HaasKeyboard.jpg
>>
>>
>> 
>> --
>> Check out the vibrant tech community on one of the world's most
>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
>> ___
>> Emc-users mailing list
>> Emc-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>
>
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Re: [Emc-users] Haas thoughts

[Erik Friesen]

It uses an atmel chip.  However, that isn't the hangup to me.  I see
context switching as a real challenge.  So you hit the edit button, then
what?  Open gedit?  I'd really like to limit GUI excursions and control the
whole thing closer than that.

On Tue, Oct 11, 2016 at 11:16 PM, Gregg Eshelman <g_ala...@yahoo.com> wrote:

> Look on the back of the keyboard for microchips, or on a board that the
> keyboard connects to. Google the numbers to see what they are.
>
> I'd thought about hoking up the keyboard from the Anilam Crusader 2 system
> that was on my big mill. Shouldn't have been too difficult since a cable
> went from the keyboard to another small board with a matrix to RS232C chip.
> Would have mostly been figuring out the pinout of the header on the adapter
> board then setting up a text editor to take input from a COM port, then
> poking every button to see what characters it sent.
>
>
>   From: Erik Friesen <e...@aercon.net>
>  To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net>
>  Sent: Tuesday, October 11, 2016 6:59 AM
>  Subject: [Emc-users] Haas thoughts
>
> Are any of these items valid any more?
>
> http://blog.cnccookbook.com/2014/12/16/10-features-pros-
> hobby-cnc-controllers-dont/
>
> What would it take (software wise) to fully integrate a haas keypad so that
> most of the functions would be usable?  The ones I see as a challenge are
> items like Posit, Offset, and all the edit functions.
>
> Reference keypad http://aercon.net/Public/HaasKeyboard.jpg
>
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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> https://lists.sourceforge.net/lists/listinfo/emc-users
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Re: [Emc-users] Haas thoughts

[Erik Friesen]

So how does the drive know how much pwm to give the motors?  Or that
depends on the a and b levels in that case?

On Tue, Oct 11, 2016 at 6:56 PM, Erik Friesen <e...@aercon.net> wrote:

> That is the pinout between the control and the drive.  The drive doesn't
> have any direct encoder input.
>
> On Tue, Oct 11, 2016 at 6:33 PM, andy pugh <bodge...@gmail.com> wrote:
>
>> On 11 October 2016 at 23:24, Erik Friesen <e...@aercon.net> wrote:
>> > omehow these amps have to figure power and
>> > location for the bldc phase,
>>
>> Is that the pinout between the motors and the drive? Or is it the
>> control signal to the drive?
>>
>> --
>> atp
>> "A motorcycle is a bicycle with a pandemonium attachment and is
>> designed for the especial use of mechanical geniuses, daredevils and
>> lunatics."
>> — George Fitch, Atlanta Constitution Newspaper, 1916
>>
>> 
>> --
>> Check out the vibrant tech community on one of the world's most
>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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>> https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>
>
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Re: [Emc-users] Haas thoughts

[Erik Friesen]

That is the pinout between the control and the drive.  The drive doesn't
have any direct encoder input.

On Tue, Oct 11, 2016 at 6:33 PM, andy pugh <bodge...@gmail.com> wrote:

> On 11 October 2016 at 23:24, Erik Friesen <e...@aercon.net> wrote:
> > omehow these amps have to figure power and
> > location for the bldc phase,
>
> Is that the pinout between the motors and the drive? Or is it the
> control signal to the drive?
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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Re: [Emc-users] Haas thoughts

[Erik Friesen]

The pinout coming from the brushless amps is

610-1 +A CHANNEL
610-2 ANALOG GROUND
610-3 +B CHANNEL
610-4 ANALOG GROUND
610-5 ENABLE
610-6 LOGIC GROUND
610-7 FAULT
610-8 LOGIC GROUND
610-9 NOT USED
610-10 SHIELD/ANALOG GROUND

Any ideas what signal levels and types those will be?  The encoders feed
through the mocon pcb, so somehow these amps have to figure power and
location for the bldc phase, and I don't see how that is accomplished.

On Tue, Oct 11, 2016 at 3:29 PM, Erik Friesen <e...@aercon.net> wrote:

> My haas is a 1996 and it shows.  Attempting 0.1" engraving at 40ipm G187
> E.001 doesn't work, and I think it is a control limitation.  See two paths
> in this pic?  aercon.net/Public/Engraving.jpg  The top is attempted at 40
> IPM, the bottom at 15.  To me it looks like a trajectory planning
> limitation.
>
> The only person to attempt a haas vf conversion never finished it.
>
> On Tue, Oct 11, 2016 at 3:03 PM, Greg Bentzinger <skullwo...@yahoo.com>
> wrote:
>
>> Perspective on anything read on cnccookbook.com
>>
>> Keep in mind that site exists to promote his software and his articles
>> are written by someone who does not have long term (if any) experience with
>> "Big Iron" in an industrial business environment.
>>
>> His opinions are biased towards the hobby/semi-pro market as that is the
>> best he knows. Some info offers keen insights, while others are plain
>> wrong. His software can be helpful if you are willing to make a windows PC
>> with internet connection available to employees on the floor. ( Network
>> connection is required so software can phone home to validate your
>> subscription license.)
>>
>> Personally I use the other (competitor) option which has a Buy once cry
>> once license option and is cross platform so it will run on my Android
>> phone as well as PC.
>>
>> I know there are a very large group who loves the HAAS control, I
>> however, after having to try and keep 8 lathes and 3 mills running and knew
>> my Haas repair crew better than any other vendor, so I'm definitely not one
>> of those fan boys. I like toggle switches and rotary knobs I can see status
>> from 10m or yrds away. Plus tapping a membrane key to increment up or down
>> a feed rate or spindle speed seems just wrong on a full sized machine.
>> (Desktop mini router - I can see running just a kyb and E-Stop.)
>>
>>
>> Not sure if Mesa's SSerial card for pendants could do that. There is
>> definitely money to be made if some enterprising person or company were to
>> make a plug in adapter harness for Haas and FADAL control consoles.
>>
>> Greg Bentzinger out yonder in Colorado
>>
>> 
>> --
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>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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>
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Re: [Emc-users] Haas thoughts

[Erik Friesen]

My haas is a 1996 and it shows.  Attempting 0.1" engraving at 40ipm G187
E.001 doesn't work, and I think it is a control limitation.  See two paths
in this pic?  aercon.net/Public/Engraving.jpg  The top is attempted at 40
IPM, the bottom at 15.  To me it looks like a trajectory planning
limitation.

The only person to attempt a haas vf conversion never finished it.

On Tue, Oct 11, 2016 at 3:03 PM, Greg Bentzinger 
wrote:

> Perspective on anything read on cnccookbook.com
>
> Keep in mind that site exists to promote his software and his articles are
> written by someone who does not have long term (if any) experience with
> "Big Iron" in an industrial business environment.
>
> His opinions are biased towards the hobby/semi-pro market as that is the
> best he knows. Some info offers keen insights, while others are plain
> wrong. His software can be helpful if you are willing to make a windows PC
> with internet connection available to employees on the floor. ( Network
> connection is required so software can phone home to validate your
> subscription license.)
>
> Personally I use the other (competitor) option which has a Buy once cry
> once license option and is cross platform so it will run on my Android
> phone as well as PC.
>
> I know there are a very large group who loves the HAAS control, I however,
> after having to try and keep 8 lathes and 3 mills running and knew my Haas
> repair crew better than any other vendor, so I'm definitely not one of
> those fan boys. I like toggle switches and rotary knobs I can see status
> from 10m or yrds away. Plus tapping a membrane key to increment up or down
> a feed rate or spindle speed seems just wrong on a full sized machine.
> (Desktop mini router - I can see running just a kyb and E-Stop.)
>
>
> Not sure if Mesa's SSerial card for pendants could do that. There is
> definitely money to be made if some enterprising person or company were to
> make a plug in adapter harness for Haas and FADAL control consoles.
>
> Greg Bentzinger out yonder in Colorado
>
> 
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[Emc-users] Haas thoughts

[Erik Friesen]

Are any of these items valid any more?

http://blog.cnccookbook.com/2014/12/16/10-features-pros-hobby-cnc-controllers-dont/

What would it take (software wise) to fully integrate a haas keypad so that
most of the functions would be usable?  The ones I see as a challenge are
items like Posit, Offset, and all the edit functions.

Reference keypad http://aercon.net/Public/HaasKeyboard.jpg
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Re: [Emc-users] CAD/CAM for LinuxCNC

[Erik Friesen]

Adding another thing, every question I have asked on the forums has been
answered in hours by Fusion people.

Are there bugs?  Yes.  Ever used Alibre?

On Wed, May 11, 2016 at 8:26 PM, Erik Friesen <e...@aercon.net> wrote:

> I also have been trying out Fusion 360.  It has some drawbacks but at this
> point I am willing to put up with them for the CAM package.  Importing an
> stl from Alibre works well enough.  It puts out some decent G code in my
> opinion, and the post processor is easy to modify(If you know any
> javascript).
>
> So its web based, but $300 won't buy you maintenance for any other equally
> powerful cam.
>
> On Tue, Sep 29, 2015 at 1:59 AM, rudy du preez <r...@asmsa.co.za> wrote:
>
>> I can also report some success with Fusion 360. I have produced some GCODE
>> for milling quite easily, creating the CAD model directly in Fusion 360.
>>
>> I have also done some turning work, starting with the Siemens turning Post
>> and modifying it for LCNC. So far I have found it easy to modify. The G33
>> work the same is LCNC. The tool change is also easy to change and the
>> upfront settings as well. G71 becomes G21, G0 becomes G20, CR= becomes R.
>>
>> Will need more work to do the rest.
>>
>> I also found it very useful to install it on my Macbook as well. It allows
>> me to work at two different locations on the same project using the Cloud
>> storage and without any USB sticks.
>>
>> Rudy
>>
>>
>>
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Re: [Emc-users] CAD/CAM for LinuxCNC

[Erik Friesen]

I also have been trying out Fusion 360.  It has some drawbacks but at this
point I am willing to put up with them for the CAM package.  Importing an
stl from Alibre works well enough.  It puts out some decent G code in my
opinion, and the post processor is easy to modify(If you know any
javascript).

So its web based, but $300 won't buy you maintenance for any other equally
powerful cam.

On Tue, Sep 29, 2015 at 1:59 AM, rudy du preez  wrote:

> I can also report some success with Fusion 360. I have produced some GCODE
> for milling quite easily, creating the CAD model directly in Fusion 360.
>
> I have also done some turning work, starting with the Siemens turning Post
> and modifying it for LCNC. So far I have found it easy to modify. The G33
> work the same is LCNC. The tool change is also easy to change and the
> upfront settings as well. G71 becomes G21, G0 becomes G20, CR= becomes R.
>
> Will need more work to do the rest.
>
> I also found it very useful to install it on my Macbook as well. It allows
> me to work at two different locations on the same project using the Cloud
> storage and without any USB sticks.
>
> Rudy
>
>
>
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Re: [Emc-users] Install issues

[Erik Friesen]

Perhaps there needs to be an easy to find migration page.  Here is what it
was..

(Hardware = 5i25 and 7i76)

loadrt probe_parport isn't necessary, and won't load anyway, for whatever
reason

watchdog petting isn't needed anymore per google search.

Also, it is found in ~/linuxcnc, which isn't created until you select one
from the list.


The real reason for the livecd update was, I sold my router to someone
else, and didn't want my individualized dev setup, wanted a fresh install.



On Mon, May 2, 2016 at 7:03 AM, andy pugh  wrote:

> On 2 May 2016 at 03:12, Sebastian Kuzminsky  wrote:
> > Does anyone want to try to salvage any of that wiki page before i remove
> it?
>
> Is there anything there that is still true? I didn't see anything...
>
> --
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> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
>
>
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[Emc-users] Install issues

[Erik Friesen]

So I installed/updated my router to 2.7.6 from a live cd, can't seem to
find where the configs are located...

http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Configuring_LinuxCNC is outdated.

Also, any other issues I may face migrating from 2.6 ?
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Re: [Emc-users] A bit OT: DNC - NC file server from microcomputer?

[Erik Friesen]

Adding requests from the panel shouldn't be hard, but who doesn't have a
table or phone laying around?

On Fri, Apr 29, 2016 at 8:17 PM, Erik Friesen <e...@aercon.net> wrote:

> Are you comfortable coding?
>
> I just did something for myself that is similar to this for my haas vf2.
> I set up a windows share using samba on a headless intel nuc running debian
> and a ftdi rs232 adapter.  Then a couple days later I have this web gui
> that you can select the file to receive or send out of the shared folder.
> I have been trying to decide where to go with it so far, whether to try to
> take it commercial or open source it and sell pre ready hardware.  Its
> still pretty beta thought, and only supports xmodem.  I think
> embeddedarm.com has some nice hardware options.
>
> calmotion lancnc does sort of what you want, but you have to wire their
> pendant on there.  Plus, its an ftp server, not a real windows share.
>
> The state of cnc machines and dnc is pathetic.  If you want something off
> the shelf it was probably written years ago, or pay lots of money.
>
> Some people say they have run millions of lines without error checking on
> rs232, but I don't trust it.  All it takes is a glitch on a decimal point.
>
> On Fri, Apr 29, 2016 at 5:45 PM, Ralph Stirling <
> ralph.stirl...@wallawalla.edu> wrote:
>
>> I wrote a small program that I ran on an old Linux
>> PC to transfer files to a Mori Seiki lathe with Fanuc 0-iTC
>> and to a Haas TM-1.  It waited on the handshake
>> signal from the machine serial port, and would then
>> fetch a single file from a network file system drive
>> (either moricode.txt or haascode.txt according to the
>> machine).  Users of the machines would copy their
>> G-code file to the network drive as moricode.txt or
>> haascode.txt, then walk over to the machine and
>> punch the button sequence to read a file over the
>> serial port.  Everything else was handled by the programs
>> on the PC (which was headless).  I'll likely set this
>> up on a BBB or RPi at some point.
>>
>> I can dig up program source for anybody that wants
>> it as a starting point.
>>
>> -- Ralph
>> 
>> From: Marius Alksnys [mar...@robotise.lt]
>> Sent: Friday, April 29, 2016 2:24 PM
>> To: emc-users@lists.sourceforge.net
>> Subject: [Emc-users] A bit OT: DNC - NC file server from microcomputer?
>>
>> I have a question how to simplify file transfer from, let's say, USB
>> flash drive to a CNC machine with specifically Fanuc 18t controller.
>>
>> Now this machine has its own old laptop with old MS Win and some DNC
>> software. It takes several clicks on the PC and several non trivial
>> Fanuc panel button presses including correct sequence of them. And to my
>> surprise operators are used to this.
>>
>> As I was used to DNC, there was a PC with shared NC folder(s) on a
>> network, connected through serial port (and adapter if needed) to the
>> CNC machine(s). There was no need to come to this PC.
>>  From the machine side (with old Heidenhain controller) I had to press
>> EXT, enter file number, press Enter and that's all - I had any file I
>> wanted of any size in the machine in drip-feed mode! And this was
>> reallly old machine.
>>
>> Now I see this not so old (about 2006) Fanuc and I am surprised how
>> complicated life is for the operators..
>>
>> Do you have an idea how to use BeagleBone or similar micro device glued
>> to the side of the panel of the machine to work as a USB adapter or even
>> + LAN file server?
>>
>>
>>
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Re: [Emc-users] A bit OT: DNC - NC file server from microcomputer?

[Erik Friesen]

Are you comfortable coding?

I just did something for myself that is similar to this for my haas vf2.  I
set up a windows share using samba on a headless intel nuc running debian
and a ftdi rs232 adapter.  Then a couple days later I have this web gui
that you can select the file to receive or send out of the shared folder.
I have been trying to decide where to go with it so far, whether to try to
take it commercial or open source it and sell pre ready hardware.  Its
still pretty beta thought, and only supports xmodem.  I think
embeddedarm.com has some nice hardware options.

calmotion lancnc does sort of what you want, but you have to wire their
pendant on there.  Plus, its an ftp server, not a real windows share.

The state of cnc machines and dnc is pathetic.  If you want something off
the shelf it was probably written years ago, or pay lots of money.

Some people say they have run millions of lines without error checking on
rs232, but I don't trust it.  All it takes is a glitch on a decimal point.

On Fri, Apr 29, 2016 at 5:45 PM, Ralph Stirling <
ralph.stirl...@wallawalla.edu> wrote:

> I wrote a small program that I ran on an old Linux
> PC to transfer files to a Mori Seiki lathe with Fanuc 0-iTC
> and to a Haas TM-1.  It waited on the handshake
> signal from the machine serial port, and would then
> fetch a single file from a network file system drive
> (either moricode.txt or haascode.txt according to the
> machine).  Users of the machines would copy their
> G-code file to the network drive as moricode.txt or
> haascode.txt, then walk over to the machine and
> punch the button sequence to read a file over the
> serial port.  Everything else was handled by the programs
> on the PC (which was headless).  I'll likely set this
> up on a BBB or RPi at some point.
>
> I can dig up program source for anybody that wants
> it as a starting point.
>
> -- Ralph
> 
> From: Marius Alksnys [mar...@robotise.lt]
> Sent: Friday, April 29, 2016 2:24 PM
> To: emc-users@lists.sourceforge.net
> Subject: [Emc-users] A bit OT: DNC - NC file server from microcomputer?
>
> I have a question how to simplify file transfer from, let's say, USB
> flash drive to a CNC machine with specifically Fanuc 18t controller.
>
> Now this machine has its own old laptop with old MS Win and some DNC
> software. It takes several clicks on the PC and several non trivial
> Fanuc panel button presses including correct sequence of them. And to my
> surprise operators are used to this.
>
> As I was used to DNC, there was a PC with shared NC folder(s) on a
> network, connected through serial port (and adapter if needed) to the
> CNC machine(s). There was no need to come to this PC.
>  From the machine side (with old Heidenhain controller) I had to press
> EXT, enter file number, press Enter and that's all - I had any file I
> wanted of any size in the machine in drip-feed mode! And this was
> reallly old machine.
>
> Now I see this not so old (about 2006) Fanuc and I am surprised how
> complicated life is for the operators..
>
> Do you have an idea how to use BeagleBone or similar micro device glued
> to the side of the panel of the machine to work as a USB adapter or even
> + LAN file server?
>
>
>
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Re: [Emc-users] PCB circuit board drill file

[Erik Friesen]

I don't know what you are using for PCB software, but I have done this
using diptrace and vcarve.

It works best to use a ground plane with spokes to all pads, then you
export using the dxf offset feature, and run those lines right on top.

On Tue, Apr 26, 2016 at 1:04 AM, Nicklas Karlsson <
nicklas.karlsso...@gmail.com> wrote:

> > On 04/25/2016 11:56 AM, Nicklas Karlsson wrote:
> > > I am looking at using linuxcnc to drill my circuit boards. There is a
> few commands in file, a tool table and coordinates. It is not possible run
> the file directly in linuxcnc. I think this kind of file could be of
> general use then a pattern of holes need to be drilled. Do anyone have any
> suggestions on how to attack it?
>
> I could in sort of see g-code in the excellon drill files but linuxcnc
> where not able to read. I also assumed many used Excellon drill files
> before. It useful both for circuit boards and picking coordinates for heat
> sink.
>
> > Although Excellon drill files are technically a dialect of
> > RS-274D (alias G-code) they are pretty far from modern
> > dialects.  I wrote a program to convert it to standard
> > G-code.  See :
> > http://pico-systems.com/codes/cvtexc2.c
> > and
> > http://pico-systems.com/codes/cvtexcm.c
> >
> > The first one assumes input AND output are in inch units,
> > the 2nd one takes mm in and converts to inches.
> >
> > It has been a LONG time since I used these, so definitely
> > use at YOUR PERIL!
> >
> > Probably the first program will work fine reading in mm and
> > outputting mm if you just adjust where the assumed decimal
> > point is.  The code should be pretty transparent if you know c.
> >
> > Jon
> >
> >
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Re: [Emc-users] Aluminum sources

[Erik Friesen]

I found some at metalremnants.com and will probably use frontpanel for the
profiles.  I ordered some today and will see how close the two match.

On Wed, Apr 13, 2016 at 8:21 PM, Jeremy Jones <sp01jjo...@gmail.com> wrote:

> Hammond is pretty cheap. They're even on Amazon. Been looking for some
> myself. Not sure about the anodizing though.
>
> On Wed, Apr 13, 2016 at 11:19 AM, Dave Cole <linuxcncro...@gmail.com>
> wrote:
>
> > On 4/13/2016 8:40 AM, andy pugh wrote:
> > > On 13 April 2016 at 13:29, Erik Friesen <e...@aercon.net> wrote:
> > >> Hmm, not sure about the anodizing shops, I suppose you need to walk in
> > >> there prepare to spend $5k before they'd talk to you.
> > > Depends on the shop. The one I use charges £10 cash for up to 5 parts
> > > at a time :-)
> >
> > The heat treat and plating shops in my neck of the woods are pretty down
> > to earth folks.
> >
> > The heat treat guys will often place small batchs of parts in with huge
> > batches of parts and only charge a small amount for the service for the
> > small batch since the large batch covers all of the cost of the setup
> > and gas for the oven.
> >
> > I think the plating/anodizing guys around here work pretty much the same
> > way from what I have been told.   Oftentimes machines shops do one-off
> > jobs and they bring in a half dozen parts to be anodized and that is it.
> >
> > Come to think of it the local family owned heat treat shop put in an
> > anodizing line a couple of years ago...  I forgot about that.I did
> > some controls for one of their induction heat treat machines years ago
> > when the original controller died.
> >
> > Dave
> >
> >
> >
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Re: [Emc-users] Aluminum sources

[Erik Friesen]

For example, the 19" x 1.725 x 0.115 piece costs around $45.

aercon.net/utilities/SANY1054.JPG

On Wed, Apr 13, 2016 at 8:29 AM, Erik Friesen <e...@aercon.net> wrote:

> Hmm, not sure about the anodizing shops, I suppose you need to walk in
> there prepare to spend $5k before they'd talk to you.  We have been running
> about 25 at a time costing around $120 apiece, so it will have to fit in
> that constraint.  I'd rather pocket the majority of the $120.
>
> On Wed, Apr 13, 2016 at 2:17 AM, Nicklas Karlsson <
> nicklas.karlsso...@gmail.com> wrote:
>
>> Some nearby factory, laser cutting?
>>
>> > Any ideas where to find anodized profiles and aluminum sheet like this?
>> >
>> > https://www.frontpanelexpress.com/products/enclosures/
>> >
>> > We have sent quite a bit of money their way, would like to do this in
>> house.
>> >
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Re: [Emc-users] Aluminum sources

[Erik Friesen]

Hmm, not sure about the anodizing shops, I suppose you need to walk in
there prepare to spend $5k before they'd talk to you.  We have been running
about 25 at a time costing around $120 apiece, so it will have to fit in
that constraint.  I'd rather pocket the majority of the $120.

On Wed, Apr 13, 2016 at 2:17 AM, Nicklas Karlsson <
nicklas.karlsso...@gmail.com> wrote:

> Some nearby factory, laser cutting?
>
> > Any ideas where to find anodized profiles and aluminum sheet like this?
> >
> > https://www.frontpanelexpress.com/products/enclosures/
> >
> > We have sent quite a bit of money their way, would like to do this in
> house.
> >
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[Emc-users] Aluminum sources

[Erik Friesen]

Any ideas where to find anodized profiles and aluminum sheet like this?

https://www.frontpanelexpress.com/products/enclosures/

We have sent quite a bit of money their way, would like to do this in house.
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Re: [Emc-users] router parts

[Erik Friesen]

Thanks for the good advice.

This router started life as a probotix fireball.  I soon learned that 3/4
round bearing rails have much flex.

On Mon, Apr 11, 2016 at 11:46 AM, bari <bari00...@gmail.com> wrote:

> Something similar in size but in aluminum sells for ~$1k.
>
> http://www.automationtechnologiesinc.com/products-page/cnc-router/kl-3040-cnc-router
>
> Slightly larger aluminum routers (60cm x 40cm) are ~$2k.
> http://www.automationtechnologiesinc.com/products-page/cnc-router/kl-6040
>
> You have Gecko drives and Mesa electronics which are superior to what
> they include. But few see the value in wooden machine frames and
> gantries even though the ones in the links have plenty of twist in them.
>
>
> On 04/11/2016 07:47 AM, Erik Friesen wrote:
> > Looking to liquidate my linuxcnc router, have it listed on ebay, no
> bites.
> > Need cash and room in my shop.  Was asking $2500, guess that isn't
> > realistic, when you add up your main parts, it doesn't come to much, but
> > when you build it, all the little stuff costs a pretty penny.  What is a
> > realistic price for something like this, or is it better to part it off?
> >
> > aercon.net/utilities/cncrouter/All.JPG
> > aercon.net/utilities/cncrouter/Bottom.JPG
> > aercon.net/utilities/cncrouter/Controls.JPG
> > aercon.net/utilities/cncrouter/Er11Collets.JPG
> > aercon.net/utilities/cncrouter/Front.JPG
> > aercon.net/utilities/cncrouter/Rear.JPG
> > aercon.net/utilities/cncrouter/ReverseSide.JPG
> > aercon.net/utilities/cncrouter/SANY1020.JPG
> > aercon.net/utilities/cncrouter/Side.JPG
> > aercon.net/utilities/cncrouter/T-slot.JPG
> > aercon.net/utilities/cncrouter/Y-rails.JPG
> >
> > 2hp VFD(automation direct), 0.8kw water cooled spindle(Ugracnc)
> > Mesa electronics 5i25 and 7i76
> > 3 x Gecko drives
> > 3 x HT23-280-8 steppers
> > 1/8",3/16",1/4", and 4mm er11 collets
> > Work envelope X 14", Y 19", Z 4"
> >
> > So if you see something you want, let me know.
> >
> > Yeah, the haas needs a spindle rebuild.  When I pulled the lower cap off
> > the spindle, the bearing spacer fell out in so many pieces.  It got
> patched
> > with a router built bearing retainer, but still needs fixing, it has
> about
> > 5 thou non preload.
> >
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[Emc-users] router parts

[Erik Friesen]

Looking to liquidate my linuxcnc router, have it listed on ebay, no bites.
Need cash and room in my shop.  Was asking $2500, guess that isn't
realistic, when you add up your main parts, it doesn't come to much, but
when you build it, all the little stuff costs a pretty penny.  What is a
realistic price for something like this, or is it better to part it off?

aercon.net/utilities/cncrouter/All.JPG
aercon.net/utilities/cncrouter/Bottom.JPG
aercon.net/utilities/cncrouter/Controls.JPG
aercon.net/utilities/cncrouter/Er11Collets.JPG
aercon.net/utilities/cncrouter/Front.JPG
aercon.net/utilities/cncrouter/Rear.JPG
aercon.net/utilities/cncrouter/ReverseSide.JPG
aercon.net/utilities/cncrouter/SANY1020.JPG
aercon.net/utilities/cncrouter/Side.JPG
aercon.net/utilities/cncrouter/T-slot.JPG
aercon.net/utilities/cncrouter/Y-rails.JPG

2hp VFD(automation direct), 0.8kw water cooled spindle(Ugracnc)
Mesa electronics 5i25 and 7i76
3 x Gecko drives
3 x HT23-280-8 steppers
1/8",3/16",1/4", and 4mm er11 collets
Work envelope X 14", Y 19", Z 4"

So if you see something you want, let me know.

Yeah, the haas needs a spindle rebuild.  When I pulled the lower cap off
the spindle, the bearing spacer fell out in so many pieces.  It got patched
with a router built bearing retainer, but still needs fixing, it has about
5 thou non preload.
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Re: [Emc-users] Way OT: Cannot see Workgroup Computers

[Erik Friesen]

Find a way to browse which PC is the master browser, see if it is shifting
around.  You may want to set one up as master.

On Mon, Mar 28, 2016 at 8:14 PM, Gregg Eshelman  wrote:

> Are you manually assigning IPs or are you using DHCP?
> There must be only one active source for DHCP on a LAN. You can use more
> but only if each one is serving IPs for different private IP address
> ranges. A DHCP source must be always on, or be turned on and ready before
> the systems it's assigning IPs to are turned on. So if your router is the
> DHCP source and you turn it off, your computers, printers etc can lose
> track of one another.
> Another method of not manually assigning IPs on each individual computer
> or other devices is with a BOOTP server. From a central source you can
> assign IP addresses to MAC addresses. 'Course you then need a BOOTP server
> process running on an anways or first on computer, or a router/modem with
> BOOTP capability - and you get to type in a bunch of MAC addresses.
> For my little LAN I manually set the printer's IP addresses but let the
> internet router use DHCP to assign IPs to the computers since I'm not
> currently doing any file sharing among them.
> I also set the printers to high numbered addresses like 192.168.0.186 and
> 192.168.0.192 so that the DHCP won't do stupid things like assigning a
> computer the same IP as a printer. It starts at 192.168.0.2 and increments
> the last number up from there.
> In my experience with Windows and networking (going back to version 3.0),
> Windows has an issue with forgetting where printers are when they have
> dynamically assigned IP addresses. Newer versions of Windows have a
> "dynamic" network printer option that's supposed to get around that but I
> haven't tried it. Setting a fixed IP and installing drivers for each
> printer on each computer works and stays working because it's not allowed
> to be altered by the whims of software.
>
>
>
>   From: Rick Lair 
>  To: Emc Users 
>  Sent: Monday, March 28, 2016 7:47 AM
>  Subject: [Emc-users] Way OT: Cannot see Workgroup Computers
>
> In know this is way off topic, but if anybody would possibly know, I'm
> sure they are floating around here somewhere,
>
> We have a small network here at the shop, roughly a dozen PC's and 4
> CNC's ( my linuxcnc builds) that are all networked together, using a
> workgroup type setup, not a domain. Most of the time everything works
> fine, but randomly ( right now) when you try to look at one of the other
> workgroup computers, there is nothing there. On my wheezy machine I
> clicked on the "Network" selection, and then clicked on the "Windows
> Network" link, and there is nothing there. So I went back to XP machine,
> and went and clicked "View Workgroup Computers", and a popup box comes
> up after about 10 seconds that says " The list of servers for this
> workgroup is currently unavailable". On both machines, I can access the
> internet just fine, I pinged the wheezy machine from my XP machine, and
> everything looks fine there, so what could possibly cause it not
> see/display the other PC's in the network managers of either machine?
>
>
>
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Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

I don't want bang for my buck.  What I want is a control board I can drop
into my haas, and doing it with x86 isn't very feasible.  Dropping a
embeddedarm ts4900 on a custom baseboard would be real slick, and it seems
that it could surely compete with the 1990's era motorola running at 40mhz.

Anyway, that is just dreaming.  Reality is that when you want to sell
equipment, most will run far and fast from self retrofits.

On Wed, Mar 23, 2016 at 2:51 AM, Nicklas Karlsson <
nicklas.karlsso...@gmail.com> wrote:

> Then it come to 3D graphics this is the strong point on ordinary computer.
> Strong point of micro controller is: 3D graphics, hard drives or other
> unknown will not disturb execution, they are very simple and run software
> from the internal flash.
>
> My idea is to split linuxcnc in two and only run lower parts on ARM or
> other micro controller, OS would probably be FreeRtos or none at all. Then
> i look in developer manual there are diagram with NML in between and old
> versions already have support for NML over tcp.
>
>
> On Tue, 22 Mar 2016 17:32:11 -0500
> bari <bari00...@gmail.com> wrote:
>
> > I spent the past few days looking over the current state of ARM SOC's
> > for Linuxcnc and the open 3D driver situation hasn't changed much.
> >
> > i.mx6 uses a Vivante GPU and you can build RT kernels and build from
> > open GPU driver source. The problem is NXP sells their 1-cores for ~$15
> > and their duals for ~$30 and the quads for ~$55.  I get more bang for
> > the buck with x86. I didn't find any vendors selling i.mx6 parts out the
> > back door since they can now get better ARM SOC's in China for a
> > fraction of the price from Allwinner and Rockchip.
> >
> > Allwinner uses mostly Mali and PowerVR for GPU's. Their SOC's tend to
> > sell for under $10ea but the GPU and other hardware driver source is
> > missing.
> >
> > Samsung Exynos are low cost but they only sell the good parts you'd want
> > to use to a chosen few customers.
> >
> > Snapdragon and Tegra K1 are under $20 and have open 3D drivers but like
> > Samsung only sell SOC's to a select few.
> >
> > Rockchip uses Mail and also sells SOC's under $10 ea but the like with
> > Allwinner the drivers are closed.
> >
> > Broadcom has open 3D drivers for the RPi devices. But dealing with
> > Broadcom makes me ill and they like Samsung only sell the good parts
> > you'd want to a chosen few.
> >
> > Mediatek also uses Mali.
> >
> > Who and what did I miss?
> >
> > On 03/16/2016 07:17 AM, Erik Friesen wrote:
> > > I have been doing some work with an i.mx6 of late, and wonder why the
> quad
> > > couldn't do linuxcnc?  It seems there is some obscure reason I read
> > > somewhere.
> > >
> > > Older Haas machines use the 68040? 40mhz clunker.
> > >
> > > This got me thinking, anyway http://nxgencnc.com/
> > >
> > > But I ended up buying a 1996 haas.  Going back to rs232 sort of hurts
> after
> > > networked linuxcnc.
> > >
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> >
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Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

FYI, the nxgen controller runs around $15K.

On Wed, Mar 16, 2016 at 12:10 PM, andy pugh  wrote:

> On 16 March 2016 at 15:52, W. Martinjak  wrote:
>
> >> The problem with the Pi is that the obvious choice for IO, Ethernet,
> >> is  connected via the USB bus.
> >>
> >
> > But SPI works well and in conjunction with an FPGA/CPLD very well.
>
> That might be an interesting setup with:
>
> http://store.mesanet.com/index.php?route=product/product=83_85_id=291
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
>
>
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[Emc-users] Linuxcnc on arm

[Erik Friesen]

I have been doing some work with an i.mx6 of late, and wonder why the quad
couldn't do linuxcnc?  It seems there is some obscure reason I read
somewhere.

Older Haas machines use the 68040? 40mhz clunker.

This got me thinking, anyway http://nxgencnc.com/

But I ended up buying a 1996 haas.  Going back to rs232 sort of hurts after
networked linuxcnc.
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Re: [Emc-users] Linuxcnc on arm

[Erik Friesen]

I am using the embeddedarm ts4900, seems more industrialized than the
beagle/rasberi pi solutions.  Plus, you can get answers on the phone in a
pinch.  The buck tends to stop nowhere with the rasberi solutions.

My first go around was with the RiotBoard, which would randomly refuse to
boot.

On Wed, Mar 16, 2016 at 11:52 AM, W. Martinjak  wrote:

> On 2016-03-16 16:41, andy pugh wrote:
> > On 16 March 2016 at 15:35, Yanjun Luo  wrote:
> >> Hi,
> >> I think Raspberry Pi Module 3 is a good choice, I'll try it when I get a
> >> board soon
> > The problem with the Pi is that the obvious choice for IO, Ethernet,
> > is  connected via the USB bus.
> >
>
> But SPI works well and in conjunction with an FPGA/CPLD very well.
>
> --
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> nur ihre Gegner sterben nach und nach"
>
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>
>
>
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Re: [Emc-users] Cnc routers

[Erik Friesen]

www.aercon.net/utilities/photos/SANY0864.JPG
www.aercon.net/utilities/photos/SANY0865.JPG
www.aercon.net/utilities/photos/SANY0866.JPG
www.aercon.net/utilities/photos/SANY0867.JPG

Its not that the wood gets loose, its a number of factors, Probably wood
compression and moisture movement issue, along with bearing issues.  I
purchased the rail bearing assemble from cncrouterparts, and while they are
fine for a hobby mill, I find that they need to be tightened every 100
hours or so.  Also, trash ends up running on the bearing surface.

Perhaps my sights are set too high here, but I have looked at this -
http://www.ebay.com/itm/261855407885 - as well, but it looks a bit flimsy
on the X axis to me.  Also, how ever do you get the thing from twisting?

I find it hard to understand how you weld up your own frame and get it flat
and square, unless you have the right tools to do so.

I cut a lot of 12x12 material into little pieces, so flatness and
rigidity is quite important to me.  I want to stick a piece of material on
the bed and be able to have the part heights come out within 3 thousanths
or so, assuming the material has a flat bottom.




On Tue, Apr 21, 2015 at 5:58 AM, Mark Wendt wendt.m...@gmail.com wrote:

 On Mon, Apr 20, 2015 at 6:04 PM, Erik Friesen e...@aercon.net wrote:

  I have been casting around for a new pre built router in the $5 to $10K
  range, however it seems a lot of routers come with the whole kit and
  caboodle, which means it doesn't use linuxcnc and comes with the computer
  and all.  I have too much time invested in different custom things to
  switch to something else.  Does this leave me with building something
  myself again?
 
  I currently have an oak framed router (16x20 work area), gecko drives,
 mesa
  5i25, etc, but I get tired of tightening it up every month.  I'd like to
  find something where I could put my existing equipment to use.
 
  Some I have looked over -
  http://www.camaster.com/product/stinger-i/
 
 
 http://www.blurrycustoms.com/#!store/cu2p/!/IMAVX/p/34881281/category=8927047
  http://xzerocnc.com/raptor.htm
 


 Erik,

 Take a look at
 http://www.cncrouterparts.com/pro-cnc-machine-kits-c-47_54.html

 Mark

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[Emc-users] Cnc routers

[Erik Friesen]

I have been casting around for a new pre built router in the $5 to $10K
range, however it seems a lot of routers come with the whole kit and
caboodle, which means it doesn't use linuxcnc and comes with the computer
and all.  I have too much time invested in different custom things to
switch to something else.  Does this leave me with building something
myself again?

I currently have an oak framed router (16x20 work area), gecko drives, mesa
5i25, etc, but I get tired of tightening it up every month.  I'd like to
find something where I could put my existing equipment to use.

Some I have looked over -
http://www.camaster.com/product/stinger-i/
http://www.blurrycustoms.com/#!store/cu2p/!/IMAVX/p/34881281/category=8927047
http://xzerocnc.com/raptor.htm
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[Emc-users] BLDC design

[Erik Friesen]

Anyone on the list know someone knowledgeable about brushless motor design?

I am attempting to replace a rotor on this motor
*BLY171S-24V-4000*http://www.anaheimautomation.com/products/brushless/brushless-motor-item.php?sID=143pt=itID=96cID=22
with a ferrite, or other magnet for a pump.  Its a long story, but I need
about 20 minutes with someone who really understands some things.
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Re: [Emc-users] BLDC design

[Erik Friesen]

I have been waiting on a return call from anaheim.  Sometimes when you get
a little off the beaten path folks can't help.

Anyway, I am considering replacing what I believe is a 0.800 x 0.875
diameter 8 pole neodymium magnet(0.100 thick) with a ferrite, or other 8
pole magnet.

The ID of the coil is 0.830, which gives an airgap of 0.015.  I want to
open the airgap, and attempt to use my own magnetic design without totally
breaking the motor.  I am aware that this will hurt efficiency, but not
clear how much.  Also, I have been puzzling whether or not changing to 4
poles would help dealing with a larger airgap, although If I understand
correctly I would need to change to the 2000rpm motor to get equivalent
performance.


On Thu, May 22, 2014 at 5:15 PM, Dave Cole linuxcncro...@gmail.com wrote:

 You might be better off asking a question.

 Have you tried talking to Anaheim?   They are friendly.

 Dave

 On 5/22/2014 3:11 PM, Erik Friesen wrote:
  Anyone on the list know someone knowledgeable about brushless motor
 design?
 
  I am attempting to replace a rotor on this motor
  *BLY171S-24V-4000*
 http://www.anaheimautomation.com/products/brushless/brushless-motor-item.php?sID=143pt=itID=96cID=22
 
  with a ferrite, or other magnet for a pump.  Its a long story, but I need
  about 20 minutes with someone who really understands some things.
 
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Re: [Emc-users] BLDC design

[Erik Friesen]

Anaheim got back with me, they apparently don't have an in house engineer,
they only distribute.  They could only tell me that the original magnet is
neodymium.


On Thu, May 22, 2014 at 6:42 PM, andy pugh bodge...@gmail.com wrote:

 On 22 May 2014 20:11, Erik Friesen e...@aercon.net wrote:
  Anyone on the list know someone knowledgeable about brushless motor
 design?

 I made one from scratch. It works to an extent:

 https://picasaweb.google.com/lh/photo/LnN2AatetvQGg4F9v6ha5NMTjNZETYmyPJy0liipFm0?feat=directlink

 (I needed a very big hole through the middle)

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Re: [Emc-users] Start program with external button

[Erik Friesen]

I have found myself wishing I could insert c snippets somehow, to me it is
would be way easier that manually figuring out the logic.  It gets very
hard to follow three or more logic items that work together.  For example,
it takes quite a few to make a run/resume switch.


On Wed, May 14, 2014 at 3:07 AM, Viesturs Lācis viesturs.la...@gmail.comwrote:

 2014-05-14 0:57 GMT+03:00 Erik Friesen e...@aercon.net:

  Hmm.  Didn't know you could net more than one per line.
 

 You can do it in one line or break it up (for me breaking up is easier to
 understand, when I need to go through HAL file few months later), for
 example,
 net run-file whatever.gpio.000
 net run-file halui.mode.auto
 net run-file halui.program.run

 Viesturs

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Re: [Emc-users] Start program with external button

[Erik Friesen]

Maybe this will get it.
http://www.linuxcnc.org/emc2/index.php/italian/forum/24-hal-components/6442-problem-to-run-a-program-with-external-cycle-start


On Tue, May 13, 2014 at 3:35 PM, Erik Friesen e...@aercon.net wrote:

 What component do I use to start a program with an external switch?

 Using halui.program.run just tells me

 can't do that (EMC_TASK_PLAN_RUN) in manual mode

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[Emc-users] Start program with external button

[Erik Friesen]

What component do I use to start a program with an external switch?

Using halui.program.run just tells me

can't do that (EMC_TASK_PLAN_RUN) in manual mode
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Re: [Emc-users] Start program with external button

[Erik Friesen]

Hmm.  Didn't know you could net more than one per line.


On Tue, May 13, 2014 at 4:19 PM, Viesturs Lācis viesturs.la...@gmail.comwrote:

 2014-05-13 22:35 GMT+03:00 Erik Friesen e...@aercon.net:

  What component do I use to start a program with an external switch?
 
  Using halui.program.run just tells me
 
  can't do that (EMC_TASK_PLAN_RUN) in manual mode
 

 Piece of cake :)
 In the same line simply tell it to switch to auto mode:
 net start-program   whatever.gpio.00   halui.mode.auto halui.program.run

 Experience shows that putting halui.mode.auto before halui.program.run
 works better...

 Viesturs

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[Emc-users] 0.8 kw vfd settings

[Erik Friesen]

Any thoughts on setting up a vfd for one of these spindles?

http://www.automationdirect.com/adc/Shopping/Catalog/Drives/GS2_(115_-z-_230_-z-_460_-z-_575_VAC_V-z-Hz_Control)/GS2_Drive_Units_(115_-z-_230_-z-_460_-z-_575_VAC)/GS2-22P0

http://ugracnc.com/WATER-COOLED-SPINDLES/GMT-Water-Cooled-CNC-Spindle-0.75-kW-220V-R.html

Not realizing the implications, I tried to run this out of the box...
 Maybe ok, but...

Anyway, there isn't much info about the best voltage/hz ratio, other than
some chinese datasheet that comes with the spindle.  There is some
reference to a 5Hz/10V, which doesn't make sense to me.

It's really a stab at guessing what this motor wants, thought I'd try the
list.
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[Emc-users] 7i76 help

[Erik Friesen]

Where and how do I select Mode 1 for analog inputs?
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Re: [Emc-users] 7i76 help

[Erik Friesen]

Corection?  Wouldn't work until 1xxx


On Sat, May 10, 2014 at 2:55 PM, Peter C. Wallace p...@mesanet.com wrote:

 On Sat, 10 May 2014, Erik Friesen wrote:

  Date: Sat, 10 May 2014 14:05:11 -0400
  From: Erik Friesen e...@aercon.net
  Reply-To: Enhanced Machine Controller (EMC)
  emc-users@lists.sourceforge.net
  To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
 
  Subject: [Emc-users] 7i76 help
 
  Where and how do I select Mode 1 for analog inputs?


 sserial_port_0=1xxx in the hm2_pci config string

 
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Re: [Emc-users] Estop isactived

[Erik Friesen]

Never mind, uncommenting this did it.

net estop-loop iocontrol.0.user-enable-out = iocontrol.0.emc-enable-in


On Sat, May 10, 2014 at 4:28 PM, Erik Friesen e...@aercon.net wrote:

 Currently banging my head here.  What keeps emc in estop, seemingly
 regardless of hal file?  I have nothing connected to the estop pins, yet
 estop.is-actived is always true regardless of what I try.

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[Emc-users] Viewing spindle speed

[Erik Friesen]

Is there something simple I am missing to view and test the spindle speed
in Axis?  I have a + and - , but no place to manually enter a speed to test
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[Emc-users] Missing documentation

[Erik Friesen]

Where is one supposed to find information about how to use hal components?

The hal manual has nothing more than a teaser.  I am looking for info on
comp, one of the arithmetic functions
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Re: [Emc-users] Missing documentation

[Erik Friesen]

Here is what I have so far

loadrt comp count=1
loadrt constant count=1
addf comp.0 servo-thread
setp comp.0.in0 25

#setp comp.0.hyst
net comp.0.in1 = hm2_5i25.0.7i76.0.0.analogin0
net MySignal = comp.0.out

Here is the error
Signal name 'comp.0.in1' must not be the same as a pin.  Did you omit the
signal name?

Why?  I obviously have some complete lack of understanding this hal scheme.


On Sat, May 10, 2014 at 6:02 PM, Erik Friesen e...@aercon.net wrote:

 Thanks, I did find it here.  http://linuxcnc.org/docs/html/man/man9/

 I find it frustrating though, I still haven't figure out how to compare a
 float value and make a signal.

 This would have taken about a minute in C.  Something like

 if(Value25.0) return 1;



 On Sat, May 10, 2014 at 5:49 PM, Philipp Burch p...@hb9etc.ch wrote:

 Hi Erik!

 On 10.05.2014 23:30, Erik Friesen wrote:
  Where is one supposed to find information about how to use hal
 components?
 
  The hal manual has nothing more than a teaser.  I am looking for info on
  comp, one of the arithmetic functions

 Most HAL components have associated manpages, so you can usually just type

 man component

 in a terminal. Maybe you need to specify the manual section, if there is
 a command with the same name (such as for 'comp'):

 man 9 comp

 (It is section 9 if I recall correctly, otherwise there is a hint if you
 just type man comp.)

 Regards,
 Philipp



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Re: [Emc-users] Missing documentation

[Erik Friesen]

Ok, so I prepended it with a name to make it happy.  So, why?  Why is it a
requirement to create floating names to link items?


On Sat, May 10, 2014 at 6:09 PM, Erik Friesen e...@aercon.net wrote:

 Here is what I have so far

 loadrt comp count=1
 loadrt constant count=1
 addf comp.0 servo-thread
 setp comp.0.in0 25

 #setp comp.0.hyst
 net comp.0.in1 = hm2_5i25.0.7i76.0.0.analogin0
 net MySignal = comp.0.out

 Here is the error
 Signal name 'comp.0.in1' must not be the same as a pin.  Did you omit the
 signal name?

 Why?  I obviously have some complete lack of understanding this hal scheme.


 On Sat, May 10, 2014 at 6:02 PM, Erik Friesen e...@aercon.net wrote:

 Thanks, I did find it here.  http://linuxcnc.org/docs/html/man/man9/

 I find it frustrating though, I still haven't figure out how to compare a
 float value and make a signal.

 This would have taken about a minute in C.  Something like

 if(Value25.0) return 1;



 On Sat, May 10, 2014 at 5:49 PM, Philipp Burch p...@hb9etc.ch wrote:

 Hi Erik!

 On 10.05.2014 23:30, Erik Friesen wrote:
  Where is one supposed to find information about how to use hal
 components?
 
  The hal manual has nothing more than a teaser.  I am looking for info
 on
  comp, one of the arithmetic functions

 Most HAL components have associated manpages, so you can usually just
 type

 man component

 in a terminal. Maybe you need to specify the manual section, if there is
 a command with the same name (such as for 'comp'):

 man 9 comp

 (It is section 9 if I recall correctly, otherwise there is a hint if you
 just type man comp.)

 Regards,
 Philipp



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Re: [Emc-users] Viewing spindle speed

[Erik Friesen]

Ok, that is what I did.  Perhaps I will add something to the pyvcp panel.


On Sat, May 10, 2014 at 7:18 PM, Gene Heskett ghesk...@wdtv.com wrote:

 On Saturday 10 May 2014 17:07:42 Erik Friesen did opine
 And Gene did reply:
  Is there something simple I am missing to view and test the spindle
  speed in Axis?  I have a + and - , but no place to manually enter a
  speed to test

 That would be by way of the MDI facility.  Hit F5 on the keyboard to
 switch, F3 to switch back.  Machine MUST be previously homed.

 Speed is set by the S number, M starts/stops/reverses

 Something like
 S500 M3
 will start it forward, M5 will stop it, and M4 will turn it in reverse if
 your hal is setup to do that.

 Cheers, Gene
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[Emc-users] Spindle-at-speed, etc

[Erik Friesen]

I would like my machine to not only wait for the spindle to come up to
speed, but have it stop if the vfd has an error.  I am reading the analog
output from the vfd.  I have looked at using Spindle-at-speed, but it only
appears to check at the start of the program.  Is there a better way to do
this?
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[Emc-users] mesa 7i76 and 5i25

[Erik Friesen]

The 7i76 datasheet says 8-32v input.  It would be handy for me to use my
40v supply.  Is there some reason this won't handle more than 32v?

Reasons for questioning..

A8499 = 50v 
http://www.allegromicro.com/~/media/Files/Datasheets/A8499-Datasheet.ashx

Input cap = 63v

Question 2 for the 5i25:  How do I go about using mesaflash on linux?  I
tried running mesaflash from the command line but it just says command not
found.

Last go around the linux utility wasn't out, so I used the dos utility and
it took all day to get it right, plus had to program the card in a
different machine.
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Re: [Emc-users] mesa 7i76 and 5i25

[Erik Friesen]

Thanks for this info.

How might I go about beefing an input to handle a 40v input?  I'd like to
monitor the main supply somehow(with analog).

I have a hot air gun, could change a resistor, or perhaps just add an
external to adjust the divider?  It looks like you use arrays.

@Peter A side note, mesa board routing is very nice.  What Cad program are
you using?  These aren't autorouted, are they?

Silkscreen pinout def's would be nice on these boards though.


On Thu, May 8, 2014 at 9:54 AM, andy pugh bodge...@gmail.com wrote:

 On 8 May 2014 13:35, Erik Friesen e...@aercon.net wrote:
   How do I go about using mesaflash on linux?  I
  tried running mesaflash from the command line but it just says command
 not
  found.

 zip compression tends to lose the execute bit, you may need to chmod
 it. You also probably need to use a full path and a leading dot-slash.
 ( ./mesaflash ... )

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Re: [Emc-users] Router spindle choices

[Erik Friesen]

Some folks say to skip the matching vfd.  If you look close on those vfd's,
it looks the the overlay was made on a copy machine.


On Mon, Oct 21, 2013 at 11:36 AM, Charles Buckley rijrun...@gmail.comwrote:

 That matches my experience with chinese water cooled spindles. The air
 cooled ones I bought were also nice.



 On Sun, Oct 20, 2013 at 8:20 PM, Bruce Layne
 linux...@thinkingdevices.comwrote:

  I bought 10kg of titanium rod via Alibaba, from my Chinese communist
  capitalist friends.  Including shipping and the escrow fee, it was about
  half of the best price I could find in the USA.  The quality seems very
  good.  Next time, I think I'll order 20kg.
 
  Speaking of spindles and the Chinese... I'm still digging my inexpensive
  Chinese water cooled spindles for my two CNC routers, although I have
  zero spindle time on one and little time on the other.  The spindles
  spin unbelievably smoothly - much nicer than very expensive spindles
  I've seen on high end CNC machines, and my Chinese spindle motors make
  the woodworking routers that many people use on hobby CNC routers look
  like they're using gravel for bearings.  The water cooled Chinese
  spindle motors shipped with matching VFDs, and the cost was maybe $300
  or so?  Very low cost for the high quality, and that makes for good
  value.  They run so smoothly that I'm probably getting longer life from
  my carbide tooling, so that would result in even more value.
 
  But back on the thread topic, I am still changing tools by hand. :-(
 
 
 
  On 10/20/2013 09:41 PM, andy pugh wrote:
   On 21 October 2013 02:20, Erik Friesen e...@aercon.net wrote:
   alibaba... Shudder.
   Good point, I can't claim to have ever tried buying from there.
   However I did find responsive folk responding to emails for quotes and
   queries.
  
 
 
 
 
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Re: [Emc-users] Router spindle choices

[Erik Friesen]

@Bruce Layne, who did you get those spindles from?

If the alibaba poster doesn't want to give a quote for 1 item, then why
would they put 1-xxx amount on their listing?  My rfq was over the minimum
quote amount on each quote request.

I am not going to spend $3000 on an atc right now, I have been thinking
that an automatic Z zero would take about 3/4 of the work out of tool
changes.


On Mon, Oct 21, 2013 at 1:00 AM, Sven Wesley svenne.d...@gmail.com wrote:

 2013/10/21 Bruce Layne linux...@thinkingdevices.com

  I bought 10kg of titanium rod via Alibaba, from my Chinese communist
  capitalist friends.  Including shipping and the escrow fee, it was about
  half of the best price I could find in the USA.  The quality seems very
  good.  Next time, I think I'll order 20kg.
 
  Speaking of spindles and the Chinese... I'm still digging my inexpensive
  Chinese water cooled spindles for my two CNC routers, although I have
  zero spindle time on one and little time on the other.  The spindles
  spin unbelievably smoothly - much nicer than very expensive spindles
  I've seen on high end CNC machines, and my Chinese spindle motors make
  the woodworking routers that many people use on hobby CNC routers look
  like they're using gravel for bearings.  The water cooled Chinese
  spindle motors shipped with matching VFDs, and the cost was maybe $300
  or so?  Very low cost for the high quality, and that makes for good
  value.  They run so smoothly that I'm probably getting longer life from
  my carbide tooling, so that would result in even more value.
 
  But back on the thread topic, I am still changing tools by hand. :-(
 
 
 I think you guys don't get the idea with alibaba, that's a trader's place
 and if you are quoting items in countable numbers they aren't interested. I
 buy from several traders but my volumes are like a joke to them.

 You should check  http://www.aliexpress.com/ instead where you can buy
 items in eBay style.
 There are quite a few ATC spindles like the kickstarter project under 800
 bucks. Even better, they are made for BT30.

 http://www.aliexpress.com/wholesale?SearchText=atc+spindlecatId=0initiative_id=SB_20131020205212

 /Sven

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[Emc-users] Router spindle choices

[Erik Friesen]

This is an interesting project -
http://www.kickstarter.com/projects/19659206/cnc-bt15-iso15-atc-spindles-cartridge-and-spindle

Although its unclear to me what a complete system including drive motor
looks like.  Would you end up getting the same amount into it as buying one
of these? -
http://www.automationtechnologiesinc.com/products-page/cnc-spindle/atc-spindle-2


I haven't found anything in between, I would like a quickchange, but most
everything seems built for a mill setting.  My current setup is a bosch
colt with think and tinker collets, but after 100s of hours of use and one
bad bearing, I am ready to move to something quieter.  There is a plethora
of chinese spindles and vfd's, are they to be avoided?
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Re: [Emc-users] Router spindle choices

[Erik Friesen]

alibaba... Shudder.


On Sun, Oct 20, 2013 at 7:56 PM, andy pugh bodge...@gmail.com wrote:

 On 20 October 2013 21:46, Erik Friesen e...@aercon.net wrote:
  This is an interesting project -
 
 http://www.kickstarter.com/projects/19659206/cnc-bt15-iso15-atc-spindles-cartridge-and-spindle

 $115 for the petals? Crikey, I gave 2 spare sets I made away!

 You can buy an integrated motor/spindle with an ATC for not that much
 more than he is asking.

 http://www.alibaba.com/trade/search?fsb=yIndexArea=product_enCatId=SearchText=BT30++spindle

 (actually, looking, some of those may not be as described).

 That was a search for BT30, the Kickstarter was BT15. (I am not at all
 sure where you would source those).

 Good luck to the guy, but he isn't selling anything for which you
 can't already download models.

 atp
 If you can't fix it, you don't own it.
 http://www.ifixit.com/Manifesto


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Re: [Emc-users] Router spindle choices

[Erik Friesen]

I recently sent off rfq's to three places on alibaba for bldc stators.  Not
one replied back.  The company I work for has ordered pumps through
alibaba, its nothing but trouble it seems to us.


On Sun, Oct 20, 2013 at 9:20 PM, Erik Friesen e...@aercon.net wrote:

 alibaba... Shudder.


 On Sun, Oct 20, 2013 at 7:56 PM, andy pugh bodge...@gmail.com wrote:

 On 20 October 2013 21:46, Erik Friesen e...@aercon.net wrote:
  This is an interesting project -
 
 http://www.kickstarter.com/projects/19659206/cnc-bt15-iso15-atc-spindles-cartridge-and-spindle

 $115 for the petals? Crikey, I gave 2 spare sets I made away!

 You can buy an integrated motor/spindle with an ATC for not that much
 more than he is asking.

 http://www.alibaba.com/trade/search?fsb=yIndexArea=product_enCatId=SearchText=BT30++spindle

 (actually, looking, some of those may not be as described).

 That was a search for BT30, the Kickstarter was BT15. (I am not at all
 sure where you would source those).

 Good luck to the guy, but he isn't selling anything for which you
 can't already download models.

 atp
 If you can't fix it, you don't own it.
 http://www.ifixit.com/Manifesto


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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

@Sven Wesley, the shown aluminum part, what is the top of the part, the top
of the block, or the next ledge?


On Wed, Oct 2, 2013 at 6:32 AM, Erik Friesen e...@aercon.net wrote:

 So far, I have realized a number of mistakes.

 #1.  I didn't wax the modeling board the first round, so the silicone
 surface is much too porous. Because of this, the surface releases bubbles
 during molding process and any residual moisture causes issues as well.

 #2.  The back suction action starting at gel?? time has to be considered,
 and material in place to handle it.

 I built a mold out of delrin for testing, and find that bubbles are far
 less a problem, almost non existent with the slow set material.  #1 is
 deduced from this, in part.

 I still would like to try aluminum, but would have to outsource it.
 Firstcut seems pricey,
 http://www.firstcut.com/FirstQuote.aspx?p=574441wmiu
 http://www.firstcut.com/FirstQuote.aspx?p=574440fsir


 On Wed, Oct 2, 2013 at 4:20 AM, Sven Wesley svenne.d...@gmail.com wrote:

 2013/10/2 Steve Blackmore st...@pilotltd.net'

  ...
  I've used West epoxy resins quite a bit, both lay up and vacuum bagged.
  It works very well and there is extensive help and documentation on
  their web site. It's a lay up resin, not a casting resin. If you mix a
  paper cup of the stuff and leave it, it gets so hot it will burn the cup
  and catch fire - done it :)
  ...
 
  Steve Blackmore
  --


 It all depends on the characteristics of the resin. I import, consult and
 sell epoxy. I have a catalog of at least 30 different laminating resins
 and
 at least half of them are good to go for casting and doesn't produce
 enough
 heat to catch fire even in an isolated bucket. It depends on how
 aggressive
 the hardener is, Most West System that is sold is pretty fast to avoid
 dripping etc. And then you get heat, yes.

 Best regards,
 Sven

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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

So far, I have realized a number of mistakes.

#1.  I didn't wax the modeling board the first round, so the silicone
surface is much too porous. Because of this, the surface releases bubbles
during molding process and any residual moisture causes issues as well.

#2.  The back suction action starting at gel?? time has to be considered,
and material in place to handle it.

I built a mold out of delrin for testing, and find that bubbles are far
less a problem, almost non existent with the slow set material.  #1 is
deduced from this, in part.

I still would like to try aluminum, but would have to outsource it.
Firstcut seems pricey,
http://www.firstcut.com/FirstQuote.aspx?p=574441wmiu
http://www.firstcut.com/FirstQuote.aspx?p=574440fsir


On Wed, Oct 2, 2013 at 4:20 AM, Sven Wesley svenne.d...@gmail.com wrote:

 2013/10/2 Steve Blackmore st...@pilotltd.net'

  ...
  I've used West epoxy resins quite a bit, both lay up and vacuum bagged.
  It works very well and there is extensive help and documentation on
  their web site. It's a lay up resin, not a casting resin. If you mix a
  paper cup of the stuff and leave it, it gets so hot it will burn the cup
  and catch fire - done it :)
  ...
 
  Steve Blackmore
  --


 It all depends on the characteristics of the resin. I import, consult and
 sell epoxy. I have a catalog of at least 30 different laminating resins and
 at least half of them are good to go for casting and doesn't produce enough
 heat to catch fire even in an isolated bucket. It depends on how aggressive
 the hardener is, Most West System that is sold is pretty fast to avoid
 dripping etc. And then you get heat, yes.

 Best regards,
 Sven

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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

My web filter is blocking flickr.


On Mon, Sep 30, 2013 at 9:29 PM, Sven Wesley svenne.d...@gmail.com wrote:

 2013/10/1 Erik Friesen e...@aercon.net

  Were you using aluminum?  What type of draft did you use on the moulds?
 
 
 Yes. Usually splitted molds or ejectors in the bottom that could be
 manually knock the piece out. Another simple trick is to drill a small hole
 and plug it with a tiny bit of clay at the mold side. Then you can pop the
 piece out with compressed air.

 Draft, depends on the part but with a ejector pin or two and a splitted
 mold you can go vertical. I recently made a few parts with no draft and
 molded in epoxy.
 http://farm8.staticflickr.com/7152/6686837519_9a8b65926b_z.jpg

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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

Were you using aluminum?  What type of draft did you use on the moulds?

This is the aftermath of the pressure tank test.
http://aercon.net/Public/pumppix/Air%20bubbled.JPG

This is the static mix pressure test, not sure exactly why the top corner
bubbled.
http://aercon.net/Public/pumppix/Static%20pressured.JPG
http://aercon.net/Public/pumppix/Static%20pressured%202.JPG


On Mon, Sep 30, 2013 at 2:53 PM, Sven Wesley svenne.d...@gmail.com wrote:

 I've made quite a few resin molds, I was working as a prototype technician
 once upon a time and made a lot of parts in resin. We did both silicone and
 metal molds, but we never poured the resin manually. I used a large vacuum
 oven with mixing equipment inside, the internal dimensions were like a
 large kitchen oven, much like the american sized ovens were you can fit a
 turkey. Resin and hardener were placed in separate cups, vacuum applied,
 the hardener was poured into the resin under mixing and after 30 seconds of
 mixing it was slowly poured into the mold. It was a small mixing machine
 that did everything automatically inside the chamber, the only thing I had
 to do was to put the components in their cups and set the mixing/pouring
 parameters and close the hatch. As the mixing and pouring happened in an
 air free mold, every run came out perfect. i could make really gnarly molds
 with back angles and pockets and it didn't matter. Perfect every time.
 I have tried to get my hands on such vacuum chamber with no success, but it
 shouldn't be much of a problem to make one.

 /Sven




 2013/9/30 Erik Friesen e...@aercon.net

  I have looked at similar machines, but 1 oz is about 4 or 5 oz too
 little.
 
  I tried some pressure casting, it seemed to work.  However, a day later
  little surface bubbles are ruining some of the surface.  It probably
  because the molds are platinum rtv, which caused inhibition in the
 ie-3075,
  which is possible per datasheet.  The alternate 50 second gel time
 material
  is not doable to get in the tank soon enough.
 
  My vacuum system seemed like it was taking a long time to do its job, I
 was
  using one of the dessicators from
  bel-air
 
 http://www.belart.com/shop/42010-space-saver-vacuum-desiccator-140mm-white-base-p-42010.html?cPath=9
  .
   I realized that the valve has a 1/16 inlet, so a quick drill has
  shortened the vacuum time about 2/3.
 
  I think I will try some method of using static mix pressure to pressurize
  the mold.
 
 
  On Sun, Sep 29, 2013 at 1:14 PM, Jack Coats j...@coats.org wrote:
 
   30% hydrogen peroxide is normally available at hair dressers for
  bleaching
   hair.
  
  
   On Sun, Sep 29, 2013 at 11:30 AM, dave dengv...@charter.net wrote:
  
On Sat, 2013-09-28 at 23:03 -0600, Gregg Eshelman wrote:
 On 9/28/2013 5:16 AM, Erik Friesen wrote:
  For the high speed vacuum, why not just use an external tank,
 with
plumbing
  valve or equivalent to switch to whichever has highest vacuum?

 That's fine if you have the space and funds for a big tank, and a
  good
 vacuum pump. I bought an old but excellent condition Gast rotary
 vane
 vacuum pump, but haven't used it in some years since for the mold
   making
 and casting I do pressure has worked much better.

 Pulling a vacuum in a large tank takes quite a bit of time, unless
  you
 get a very high volume pump - and you'd best have a high volume
 bank
 balance to get one. ;-)

 Instead of one large tank some smaller ones can be ganged together
  with
 a manifold. Propane tanks with the valves removed so they can be
  hooked
 together with as large of pipe as possible will work, but getting
 the
 smelly stuff out can be a problem. I tried it with one tank, with
 the
 insides of the valve removed and opened up some with a drill to
  reduce
 restriction as much as I could. The stink would draw right through
  the
 vacuum pump and smell up the whole shop.
   
mercaptans are soluble in sodium hydroxide soln; don't know the ideal
concentration. Also Clorox should oxidize them but be careful about
using on concentrated mercaptans due to rapid reaction rate.
 Dissolving
them in sodium hydroxide and then oxidizing with hydrogen peroxide
should work but the commonly available 3% peroxide may be a little
wimpy. 30% works better but is hard to get and nasty to handle.
YMMV
HTH
   

 To sorta on-topic this, one of the tasks I plan to put my mill to
 is
 making prototypes of things in metal to use as masters for RTV
 molds
  to
 make plastic castings.


   
  
 
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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

I have looked at similar machines, but 1 oz is about 4 or 5 oz too little.

I tried some pressure casting, it seemed to work.  However, a day later
little surface bubbles are ruining some of the surface.  It probably
because the molds are platinum rtv, which caused inhibition in the ie-3075,
which is possible per datasheet.  The alternate 50 second gel time material
is not doable to get in the tank soon enough.

My vacuum system seemed like it was taking a long time to do its job, I was
using one of the dessicators from
bel-airhttp://www.belart.com/shop/42010-space-saver-vacuum-desiccator-140mm-white-base-p-42010.html?cPath=9.
 I realized that the valve has a 1/16 inlet, so a quick drill has
shortened the vacuum time about 2/3.

I think I will try some method of using static mix pressure to pressurize
the mold.


On Sun, Sep 29, 2013 at 1:14 PM, Jack Coats j...@coats.org wrote:

 30% hydrogen peroxide is normally available at hair dressers for bleaching
 hair.


 On Sun, Sep 29, 2013 at 11:30 AM, dave dengv...@charter.net wrote:

  On Sat, 2013-09-28 at 23:03 -0600, Gregg Eshelman wrote:
   On 9/28/2013 5:16 AM, Erik Friesen wrote:
For the high speed vacuum, why not just use an external tank, with
  plumbing
valve or equivalent to switch to whichever has highest vacuum?
  
   That's fine if you have the space and funds for a big tank, and a good
   vacuum pump. I bought an old but excellent condition Gast rotary vane
   vacuum pump, but haven't used it in some years since for the mold
 making
   and casting I do pressure has worked much better.
  
   Pulling a vacuum in a large tank takes quite a bit of time, unless you
   get a very high volume pump - and you'd best have a high volume bank
   balance to get one. ;-)
  
   Instead of one large tank some smaller ones can be ganged together with
   a manifold. Propane tanks with the valves removed so they can be hooked
   together with as large of pipe as possible will work, but getting the
   smelly stuff out can be a problem. I tried it with one tank, with the
   insides of the valve removed and opened up some with a drill to reduce
   restriction as much as I could. The stink would draw right through the
   vacuum pump and smell up the whole shop.
 
  mercaptans are soluble in sodium hydroxide soln; don't know the ideal
  concentration. Also Clorox should oxidize them but be careful about
  using on concentrated mercaptans due to rapid reaction rate. Dissolving
  them in sodium hydroxide and then oxidizing with hydrogen peroxide
  should work but the commonly available 3% peroxide may be a little
  wimpy. 30% works better but is hard to get and nasty to handle.
  YMMV
  HTH
 
  
   To sorta on-topic this, one of the tasks I plan to put my mill to is
   making prototypes of things in metal to use as masters for RTV molds to
   make plastic castings.
  
  
 
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 On today's episode of 'This Ol Geek'...
 Texas is the finest portion of the globe that has ever blessed my vision.
 - Sam Houston
 Whatever you do, work at it with all your heart... Colossians 3:23
 If you are not part of the solution, you are part of the precipitate -
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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

For the high speed vacuum, why not just use an external tank, with plumbing
valve or equivalent to switch to whichever has highest vacuum?


On Sat, Sep 28, 2013 at 12:13 AM, Gregg Eshelman g_ala...@yahoo.com wrote:

 On 9/27/2013 6:29 PM, Erik Friesen wrote:
  Do you think vacuum alone would pull into every nook and cranny?  I have
  looked for other people that have tried something similar, but didn't
 find
  much.  By vacuum, my idea is to in some way place the mold under vacuum,
  and fill it using atmospheric pressure, perhaps using some type of funnel
  and valve.  If you do calculations on a 4 sq in mold at my pump rating of
  10pa, it calculates to a .07 cubed volume at atmosphere of 101kpa.
 
  Whats the demold/depressurisation time for pressured polyurethane?

 It depends a lot on the resin. Fast cure ones like you're using could
 come out in a few minutes to an hour, just to be sure. Most of what I
 use is Smooth-On Crystal Clear and I leave it under pressure 24 hours. I
 also post-cure at 145F with convection heat so if not left under
 pressure long enough I've had problems with small bubbles forming.

 I've also used some of Smooth-On's faster resins like Onyx and have been
 able to take out of pressure in about 30 minutes. That one cures hard
 enough it doesn't need post curing.

 Think of using pressure like what a deep diver experiences, except for
 with the resin and silicone keeping it under pressure long enough
 ensures the gasses never get back out.

 You can speed up the cure by shining a halogen work light on the
 pressure tank or putting the tank in a very warm room. I've cast
 silicone molds under pressure in the middle of winter in a poorly heated
 shop, with a halogen lamp shining on one of my larger tanks. Most resins
 and silicones need to be at least 75F to cure properly.

 Therin lies a useful property that can be exploited some times. Chill
 the components prior to mixing to stretch out the pot life, then after
 pouring into the mold, apply heat to speed up the cure.

 However, some resins can fail to cure properly if they're not at the
 proper temperature or higher when mixed. In such a case, mix the resin
 then fill the mold in a cold room, then transfer to a warm room to get
 some more working time.

 If you have a bunch of leftover silicone after casting a mold, freeze
 the leftovers. It'll bring the cure nearly to a halt. I've frozen mixed
 silicone up to a week and still been able to use it to make molds. It
 will be thick but will still flow.

 Another trick I've used to alter curing times is mixing resins from the
 same product line with different cure times. I had to cast some large
 but thin parts. The longer cure time resin wouldn't properly set in such
 thin castings and the short cure time that would set in thin castings
 would kick too fast to be able to get the mold filled. So I mixed the
 two in a 50:50 ratio and the properties came out somewhere between,
 stretching the time long enough to be able to fill the mold and get it
 in a tank, while still generating enough heat from the chemical
 reactions to fully cure. I told Smooth-On what I did. No reply but they
 later added another resin in the Crystal Clear line with cure properties
 between the 202 and the longer cure time number. I think they've also
 altered the 202 because I can use it as-is in the molds that I couldn't
 when I was mixing the two, and even if I do heat the tanks or set them
 on the concrete in front of my shop on a sunny day, the castings still
 need post curing.


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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

The current resin I use has a 50 second gel time.  Its a little like flying
rc, if it gets ahead of you you are in trouble.

I wonder if a person could make a inlet control valve with a piece of
tubing and clamp, or special clamp?  Something that would take about 15 psi
forward pressure to open the clamp.


On Sat, Sep 28, 2013 at 7:16 AM, Erik Friesen e...@aercon.net wrote:

 For the high speed vacuum, why not just use an external tank, with
 plumbing valve or equivalent to switch to whichever has highest vacuum?


 On Sat, Sep 28, 2013 at 12:13 AM, Gregg Eshelman g_ala...@yahoo.comwrote:

 On 9/27/2013 6:29 PM, Erik Friesen wrote:
  Do you think vacuum alone would pull into every nook and cranny?  I have
  looked for other people that have tried something similar, but didn't
 find
  much.  By vacuum, my idea is to in some way place the mold under vacuum,
  and fill it using atmospheric pressure, perhaps using some type of
 funnel
  and valve.  If you do calculations on a 4 sq in mold at my pump rating
 of
  10pa, it calculates to a .07 cubed volume at atmosphere of 101kpa.
 
  Whats the demold/depressurisation time for pressured polyurethane?

 It depends a lot on the resin. Fast cure ones like you're using could
 come out in a few minutes to an hour, just to be sure. Most of what I
 use is Smooth-On Crystal Clear and I leave it under pressure 24 hours. I
 also post-cure at 145F with convection heat so if not left under
 pressure long enough I've had problems with small bubbles forming.

 I've also used some of Smooth-On's faster resins like Onyx and have been
 able to take out of pressure in about 30 minutes. That one cures hard
 enough it doesn't need post curing.

 Think of using pressure like what a deep diver experiences, except for
 with the resin and silicone keeping it under pressure long enough
 ensures the gasses never get back out.

 You can speed up the cure by shining a halogen work light on the
 pressure tank or putting the tank in a very warm room. I've cast
 silicone molds under pressure in the middle of winter in a poorly heated
 shop, with a halogen lamp shining on one of my larger tanks. Most resins
 and silicones need to be at least 75F to cure properly.

 Therin lies a useful property that can be exploited some times. Chill
 the components prior to mixing to stretch out the pot life, then after
 pouring into the mold, apply heat to speed up the cure.

 However, some resins can fail to cure properly if they're not at the
 proper temperature or higher when mixed. In such a case, mix the resin
 then fill the mold in a cold room, then transfer to a warm room to get
 some more working time.

 If you have a bunch of leftover silicone after casting a mold, freeze
 the leftovers. It'll bring the cure nearly to a halt. I've frozen mixed
 silicone up to a week and still been able to use it to make molds. It
 will be thick but will still flow.

 Another trick I've used to alter curing times is mixing resins from the
 same product line with different cure times. I had to cast some large
 but thin parts. The longer cure time resin wouldn't properly set in such
 thin castings and the short cure time that would set in thin castings
 would kick too fast to be able to get the mold filled. So I mixed the
 two in a 50:50 ratio and the properties came out somewhere between,
 stretching the time long enough to be able to fill the mold and get it
 in a tank, while still generating enough heat from the chemical
 reactions to fully cure. I told Smooth-On what I did. No reply but they
 later added another resin in the Crystal Clear line with cure properties
 between the 202 and the longer cure time number. I think they've also
 altered the 202 because I can use it as-is in the molds that I couldn't
 when I was mixing the two, and even if I do heat the tanks or set them
 on the concrete in front of my shop on a sunny day, the castings still
 need post curing.


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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

Did a vacuum pour test.  Complete failure as far as I am concerned.  The
small amount of air introduced in the connection, as well as the small
amount of air in the mix becomes an instant mini volcano.

One option that could work for me is a double pour.  Does polyurethane
water tight seal on cold joints?


On Sat, Sep 28, 2013 at 7:43 AM, Erik Friesen e...@aercon.net wrote:

 The current resin I use has a 50 second gel time.  Its a little like
 flying rc, if it gets ahead of you you are in trouble.

 I wonder if a person could make a inlet control valve with a piece of
 tubing and clamp, or special clamp?  Something that would take about 15 psi
 forward pressure to open the clamp.


 On Sat, Sep 28, 2013 at 7:16 AM, Erik Friesen e...@aercon.net wrote:

 For the high speed vacuum, why not just use an external tank, with
 plumbing valve or equivalent to switch to whichever has highest vacuum?


 On Sat, Sep 28, 2013 at 12:13 AM, Gregg Eshelman g_ala...@yahoo.comwrote:

 On 9/27/2013 6:29 PM, Erik Friesen wrote:
  Do you think vacuum alone would pull into every nook and cranny?  I
 have
  looked for other people that have tried something similar, but didn't
 find
  much.  By vacuum, my idea is to in some way place the mold under
 vacuum,
  and fill it using atmospheric pressure, perhaps using some type of
 funnel
  and valve.  If you do calculations on a 4 sq in mold at my pump rating
 of
  10pa, it calculates to a .07 cubed volume at atmosphere of 101kpa.
 
  Whats the demold/depressurisation time for pressured polyurethane?

 It depends a lot on the resin. Fast cure ones like you're using could
 come out in a few minutes to an hour, just to be sure. Most of what I
 use is Smooth-On Crystal Clear and I leave it under pressure 24 hours. I
 also post-cure at 145F with convection heat so if not left under
 pressure long enough I've had problems with small bubbles forming.

 I've also used some of Smooth-On's faster resins like Onyx and have been
 able to take out of pressure in about 30 minutes. That one cures hard
 enough it doesn't need post curing.

 Think of using pressure like what a deep diver experiences, except for
 with the resin and silicone keeping it under pressure long enough
 ensures the gasses never get back out.

 You can speed up the cure by shining a halogen work light on the
 pressure tank or putting the tank in a very warm room. I've cast
 silicone molds under pressure in the middle of winter in a poorly heated
 shop, with a halogen lamp shining on one of my larger tanks. Most resins
 and silicones need to be at least 75F to cure properly.

 Therin lies a useful property that can be exploited some times. Chill
 the components prior to mixing to stretch out the pot life, then after
 pouring into the mold, apply heat to speed up the cure.

 However, some resins can fail to cure properly if they're not at the
 proper temperature or higher when mixed. In such a case, mix the resin
 then fill the mold in a cold room, then transfer to a warm room to get
 some more working time.

 If you have a bunch of leftover silicone after casting a mold, freeze
 the leftovers. It'll bring the cure nearly to a halt. I've frozen mixed
 silicone up to a week and still been able to use it to make molds. It
 will be thick but will still flow.

 Another trick I've used to alter curing times is mixing resins from the
 same product line with different cure times. I had to cast some large
 but thin parts. The longer cure time resin wouldn't properly set in such
 thin castings and the short cure time that would set in thin castings
 would kick too fast to be able to get the mold filled. So I mixed the
 two in a 50:50 ratio and the properties came out somewhere between,
 stretching the time long enough to be able to fill the mold and get it
 in a tank, while still generating enough heat from the chemical
 reactions to fully cure. I told Smooth-On what I did. No reply but they
 later added another resin in the Crystal Clear line with cure properties
 between the 202 and the longer cure time number. I think they've also
 altered the 202 because I can use it as-is in the molds that I couldn't
 when I was mixing the two, and even if I do heat the tanks or set them
 on the concrete in front of my shop on a sunny day, the castings still
 need post curing.


 --
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 from
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October

[Emc-users] polyurethane resin casting

[Erik Friesen]

Has anyone here done much polyurethane resin pouring?  I have been trying
to fine tune the process.  Current process uses silicon moulds.

#1.  Does it work to use aluminum moulds?

#2.  Could it work to use high vacuum to eliminate air bubbles?  I would
envision using some type of fill funnel and a pulling a full vacuum, then
opening the entrance to the funnel with some type of rod/oring seal.

The current material I am using sets in about 10 minutes, the gel time is
around 50 seconds, so its all static mixed.
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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

I don't see why they would outgas if the vacuum released in 5 seconds as it
entered the mold.  In my experience it takes a bit for outgassing to happen.


On Fri, Sep 27, 2013 at 11:50 AM, N. Christopher Perry 
n_christopher_pe...@me.com wrote:



 N. Christopher

 On Sep 27, 2013, at 11:27, Erik Friesen e...@aercon.net wrote:

  Has anyone here done much polyurethane resin pouring?  I have been trying
  to fine tune the process.  Current process uses silicon moulds.
 
  #1.  Does it work to use aluminum moulds?
 It does.

  #2.  Could it work to use high vacuum to eliminate air bubbles?  I would
  envision using some type of fill funnel and a pulling a full vacuum, then
  opening the entrance to the funnel with some type of rod/oring seal.
 Some of these resins will out gas when you pull a vacuum on them, so you
 should check them outside the mold first.  It is generally recommended that
 you you use a mixing method that minimizing entrained air and apply
 pressure to minimize bubble size.

  The current material I am using sets in about 10 minutes, the gel time is
  around 50 seconds, so its all static mixed.
 
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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

Exactly what do you hope to achieve in your fine process?

I hope to achieve void free castings.  Pic 602 and 603 show problem area
around stator.  623-625 turned out somewhat ok, but molds pushed apart.


What issues are you having that make you want to change your process?
We are building a pump with cast in place stator.  I am still in the
prototype stage, just trying to get the process to be repeatable.  The
stator tends to have residual voids that pop out later.

The silicon molds tend to flex or come apart at the wrong times.  I have
done some experimentation with different injection sites, with mixed
success.  See pictures here for good overview of parts and problems.
http://aercon.net/Public/pumppix/index.php  Blue resin is IE-3075, grey
rc-82d.


What brand and number is your silicone and casting resin?

Best results with Innovative Polymers RC-82D, also used IE-3075.

I am using a dp-400 with 1:1 400ml cartridges and 3/8 static mix tubes.



On Fri, Sep 27, 2013 at 1:42 PM, Bill Kenny bill...@gmail.com wrote:

 I have made tons of molds and castings, ... literately.

 Aluminum isn't a good choice especially with complicated parts. It doesn't
 flex to release the molds. Typically with aluminum, it's automated and it
 pushes the parts out with pins.

 Exactly what do you hope to achieve in your fine process?
 What issues are you having that make you want to change your process?
 What brand and number is your silicone and casting resin?

 Bill




 On Fri, Sep 27, 2013 at 8:27 AM, Erik Friesen e...@aercon.net wrote:

  Has anyone here done much polyurethane resin pouring?  I have been trying
  to fine tune the process.  Current process uses silicon moulds.
 
  #1.  Does it work to use aluminum moulds?
 
  #2.  Could it work to use high vacuum to eliminate air bubbles?  I would
  envision using some type of fill funnel and a pulling a full vacuum, then
  opening the entrance to the funnel with some type of rod/oring seal.
 
  The current material I am using sets in about 10 minutes, the gel time is
  around 50 seconds, so its all static mixed.
 
 
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 --


 Thanks
 Bill

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Re: [Emc-users] polyurethane resin casting

[Erik Friesen]

Do you think vacuum alone would pull into every nook and cranny?  I have
looked for other people that have tried something similar, but didn't find
much.  By vacuum, my idea is to in some way place the mold under vacuum,
and fill it using atmospheric pressure, perhaps using some type of funnel
and valve.  If you do calculations on a 4 sq in mold at my pump rating of
10pa, it calculates to a .07 cubed volume at atmosphere of 101kpa.

Whats the demold/depressurisation time for pressured polyurethane?


On Fri, Sep 27, 2013 at 7:48 PM, Gregg Eshelman g_ala...@yahoo.com wrote:

 On 9/27/2013 9:27 AM, Erik Friesen wrote:
  Has anyone here done much polyurethane resin pouring?  I have been trying
  to fine tune the process.  Current process uses silicon moulds.
 
  #1.  Does it work to use aluminum moulds?
 
  #2.  Could it work to use high vacuum to eliminate air bubbles?  I would
  envision using some type of fill funnel and a pulling a full vacuum, then
  opening the entrance to the funnel with some type of rod/oring seal.
 
  The current material I am using sets in about 10 minutes, the gel time is
  around 50 seconds, so its all static mixed.

 I do quite a lot of it in silicone molds. http://partsbyemc.com/catalog

 The process I use for both casting the resin and the molds is to do it
 in a pressure tank. The pressure forces air into solution from which it
 cannot escape once the resin or silicone is cured.

 Pressure also pushes the resin and silicone into every tight corner,
 which simple casting often fails to do.

 I've tried using vacuum on the silicone and resin before casting it but
 still got bubbles. Silicone tends to get small bubbles just beneath the
 mold cavity surface, mostly on vertical or nearly vertical areas.

 When using quick gelling and setting resins, vacuum is too slow. Can't
 get the air out quick enough to have time to pour it.

 A basic pressure casting setup can be had for around $200 using a
 pressure pot (for painting) and a small compressor from Harbor Freight.
 Unscrew the pickup tube from the underside of the lid, remove the paint
 outlet on top and replace with a pressure gauge. Don't do anything with
 the pop-off valve that's already installed. Install a 1/4 turn ball
 valve between the regulator and the lid and you're done.

 60 PSI is high enough. For small castings as low as 40 PSI will work.

 I have several tanks from a small one from Harbor Freight up to a 24
 diameter by 30 tall one.

 A short overview on how I make silicone molds.
 http://partsbyemc.com/pub/mold-making.htm That's the process I developed
 over time, after starting out using other methods that were more
 difficult, took longer, and didn't produce the quality of castings I
 needed.

 Shiny surface corrugated cardboard, a hot glue gun, a very sharp knife,
 a Dremel with cutoff wheels and ogive and cylinder shape grindstones, a
 pressure pot and an air compressor are all the tools one needs to do
 high quality urethane resin castings.

 What has been done by some with vacuum is to place the mold and resin
 into a vacuum chamber then remotely pour the mixed resin into the mold.
 With next to no air in the mold cavity the resin should flow into every
 tiny corner and crevice. It'll also more easily flow into the tiniest
 gaps between the parts of the mold.



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Re: [Emc-users] Pendant recommendations

[Erik Friesen]

I use a universal xbox style gamepad with my cnc router.  The joysticks are
proportional, and I have three jog speeds set up on different buttons.
 Left joystick is XY and right is Z.  It is set up so that a second button
has to be pressed to enable jogging to prevent accidental jogging.  Is
there some equivalent safety feature on the Jog It! pendant?


On Sun, Jun 2, 2013 at 4:07 PM, Stephen Dubovsky smdubov...@gmail.comwrote:

 Haven't used it much but I have the CNC4PC MPG12.  Appears well made.  Im
 pretty sure its the same as the ones on ebay at 1/2 the price (I didn't
 know at the time.)  The difference between the 4 and 6 axis ones are the
 pin in the selector switch is moved to allow more/less rotation.  So either
 one could be converted to the other.  Im using the 5  6 'axis' as a feed
 and spindle speed override.  The cable is fairly thick/heavy (trying to
 pull it off the table if you just lay it somewhere non ferrous) but the
 magnets are really strong.  It will stick to a vertical ferrous surface NO
 problem.  I wired it into the mesa board and not a parallel port.  I would
 buy another (but this time get it off ebay for less $)

 Stephen


 On Sun, Jun 2, 2013 at 3:16 PM, Dave e...@dc9.tzo.com wrote:

 
  I want to buy a pendant for use with a Bridgeport CNC mill I have
  converted to Linuxcnc.
 
  I think I want an MPG with axes selection, but tell me if you disagree.
 
  I don't want to make my own as I have way too much other work to do
  right now.  I am really looking for an off the shelf hardware solution.
  If it requires some hal configuration, I am not worried about that.
 
  What do you guys recommend?
 
  If the pendant gets bumped, I don't want it fracture and fly apart, etc.
 
  I've look at the CNC4PC pendants and I have looked at the pendants on
 Ebay.
 
  How practical are USB joysticks for use as pendants on a milling machine?
  If you are using a USB joystick as a pendant, which model are you using??
 
  Thanks,
 
  Dave
 
 
 
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Re: [Emc-users] Plastic button routing

[Erik Friesen]

Hmm.  I wonder how many folks who own a cnc router would let somebody else
do something like this?  My bro-in-law has a laser engraver, but to get a
paintable depth would take a lot longer than the 20 seconds per but its
taking me.

So the suggestion is that a v bit is not going to curl the edges the same
as an end mill?

I found the vector offset tool and figured out how to do what I am after,
will give that a try.


On Thu, Apr 18, 2013 at 3:13 AM, Steve Blackmore st...@pilotltd.net wrote:

 On Wed, 17 Apr 2013 18:02:15 -0400, you wrote:

 I wrote my own script to handle the curved surface.  I wrote a custom post
 processor for this as well, it works well enough for the button curve.
 
 I am using the Create Vector tool within vcarve.
 
 This is getting infilled with black enamel, and cleaned once dry with
 Naptha.
 
 I did a number of these with a .015 tip, they plug with plastic and break.
  I suppose a v bit could work, but I think managing the cut width would be
 troublesome.  The way I am doing this currently, the width of the cut is
 the font trace width.  If there was a way to trace .001 on the outside of
 the letter vector, it would work great.

 Engraving V bits don't have a point, they cut sloping sided flat
 bottomed grooves. VCarve works out the depth of cut for you for the
 given stroke width and tool included angle.

 Have a look at one of my old pages about them

 http://www.pilotltd.net/engraving.htm

 They would work fine, if you have a machine capable of doing the
 required feeds and speeds.

 Do you know anybody with a laser engraver/cutter? That would be far
 quicker and should be capable of giving a neat cut you can paint fill in
 either stroke width or font outline.


 Steve Blackmore
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Re: [Emc-users] Plastic button routing

[Erik Friesen]

I'll try that.  I am currently cutting .015 deep, probably around 32000
rpm and 15 ipm.


On Thu, Apr 18, 2013 at 7:36 AM, Marius Liebenberg
mar...@mastercut.co.zawrote:

 Make sure that your spindle speed is as slow as you can go with it. I
 found to get a neat clean cut with plastics, I have to turn the speed
 way down. The feed can be fast. You want to get nice chips. If you go
 too slow or the spindle speed is too high, the plastic tends to melt at
 the edges instead of being cut away.

 On 2013/04/17 02:58 PM, Marcus Bowman wrote:
  Are you creating it in VCarve Pro by using the Quick Engrave tool or the
 VCarve tool?
 
  Regards,
 
  Marcus
 
 
 
  On 17 Apr 2013, at 12:14, Erik Friesen wrote:
 
  I am routing some lettering on some small plastic buttons with a .020
 ball
  nose feeding at 15 ipm.  I am using vcarve pro to create the lettering,
  using Norm West 1L, or a single line font.  I am using create profile,
 on,
  to route the line, and doing two passes, one conventional, one climb,
 in an
  attempt to minimize the plastic from leaving a curled edge on the cut.
  It
  isn't working well enough.  Really, I need to be cutting this as a
 vector
  that is .001 wide, and routing it all conventional, as I think this
 would
  fix the edge problem.  Not sure how to get there with Vcarve pro though.
  Any other suggestions out there?
 
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 Tel: +27 12 743 6064
 Fax: +27 86 551 8029
 Skype: marius_d.liebenberg
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Re: [Emc-users] Plastic button routing

[Erik Friesen]

Yes, but.. a .020 snaps if you look at it wrong.


On Thu, Apr 18, 2013 at 2:57 PM, Ben Potter b...@bpuk.org wrote:

 That seems extremely slow. I can't see a mention of what the plastic you're
 cutting is but for Corian or acrylic with a 60 degree v-bit I tend to run
 at
 around 1800 mm/min, 3mm DOC, 16k to 20k on the spindle - I adjust that by
 ear.

 I would run faster - but my router caps out at 2000 mm/min.

 At 15 IPM I'd be concerned about rubbing at anything over ~4000 rpm.

 YMMV
 Ben

  From: Erik Friesen [mailto:e...@aercon.net]
  I'll try that.  I am currently cutting .015 deep, probably around
  32000 rpm and 15 ipm.
 
 
  On Thu, Apr 18, 2013 at 7:36 AM, Marius Liebenberg
  mar...@mastercut.co.zawrote:
 
  Make sure that your spindle speed is as slow as you can go with it.
  I found to get a neat clean cut with plastics, I have to turn the
  speed way down. The feed can be fast. You want to get nice chips. If
  you go too slow or the spindle speed is too high, the plastic tends
  to melt at the edges instead of being cut away.
 



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Re: [Emc-users] Plastic button routing

[Erik Friesen]

For 1/16 and larger plastic cuts I really like the onsrud single flute
cutters, I am sold, even at $40 plus for larger ones.


On Thu, Apr 18, 2013 at 7:10 PM, Peter Homann gro...@homanndesigns.comwrote:

 Ye Steve is correct. I machine the soft plastic in these cases. The spindle
 speed is 1000rpm or less with a single flute 1/8 bit.


 http://homanndesigns.com/index.php?option=com_contentview=articleid=56:mp-03-cnc-pendant-kitcatid=34:cnc-projectsItemid=55

 http://homanndesigns.com/images/stories/MP-03Pendant/MilledEnclosure.jpg

 I slow the spindle down until I get the correct looking chips coming off.

 Cheers,

 Peter.

 On 19/04/2013 7:21 AM, Steve Blackmore wrote:
  On Thu, 18 Apr 2013 07:29:46 -0400, you wrote:
 
  Hmm.  I wonder how many folks who own a cnc router would let somebody
 else
  do something like this?  My bro-in-law has a laser engraver, but to get
 a
  paintable depth would take a lot longer than the 20 seconds per but its
  taking me.
 
  Must be a slow one? Most these days do anywhere between 1000 and 5000
  inches per minute!
 
  So the suggestion is that a v bit is not going to curl the edges the
 same
  as an end mill?
 
  No - if you get the feed and speed right. As Marius said, slow down the
  speed and up the feed, you want it to cut, not rub.
 
  Steve Blackmore
  --
 
 
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 Phone : +61 421 601 665  TurboTaig - Taig Mill Upgrade
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[Emc-users] Plastic button routing

[Erik Friesen]

I am routing some lettering on some small plastic buttons with a .020 ball
nose feeding at 15 ipm.  I am using vcarve pro to create the lettering,
using Norm West 1L, or a single line font.  I am using create profile, on,
to route the line, and doing two passes, one conventional, one climb, in an
attempt to minimize the plastic from leaving a curled edge on the cut.  It
isn't working well enough.  Really, I need to be cutting this as a vector
that is .001 wide, and routing it all conventional, as I think this would
fix the edge problem.  Not sure how to get there with Vcarve pro though.
 Any other suggestions out there?
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Re: [Emc-users] Plastic button routing

[Erik Friesen]

I wrote my own script to handle the curved surface.  I wrote a custom post
processor for this as well, it works well enough for the button curve.

I am using the Create Vector tool within vcarve.

This is getting infilled with black enamel, and cleaned once dry with
Naptha.

I did a number of these with a .015 tip, they plug with plastic and break.
 I suppose a v bit could work, but I think managing the cut width would be
troublesome.  The way I am doing this currently, the width of the cut is
the font trace width.  If there was a way to trace .001 on the outside of
the letter vector, it would work great.

The button ellipse is 0.600 x 0.315

www.aercon.net/Public/SANY0523.JPG
www.aercon.net/Public/SANY0522.JPG


On Wed, Apr 17, 2013 at 9:14 AM, Tom Penner t...@pennerco.com wrote:

 Send me the artwork and I will run it through EnRoute, which can handle 3D
 engraving on a curved surface much better. Depending on the plastic you
 will probably be happier with an engraving tool with a small tip (.001 or
 .005 need to see the artwork) That tip gives you a little rotation to
 actually cut the material rather than rub and melt.
 I will also need the spec on the shape of the button as I will create a 3d
 surface to match that EnRoute will follow when creating the engrave
 toolpath.

 Thos.


 On Wed, Apr 17, 2013 at 7:14 AM, Erik Friesen e...@aercon.net wrote:

  I am routing some lettering on some small plastic buttons with a .020
 ball
  nose feeding at 15 ipm.  I am using vcarve pro to create the lettering,
  using Norm West 1L, or a single line font.  I am using create profile,
 on,
  to route the line, and doing two passes, one conventional, one climb, in
 an
  attempt to minimize the plastic from leaving a curled edge on the cut.
  It
  isn't working well enough.  Really, I need to be cutting this as a vector
  that is .001 wide, and routing it all conventional, as I think this
 would
  fix the edge problem.  Not sure how to get there with Vcarve pro though.
   Any other suggestions out there?
 
 
 --
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Re: [Emc-users] Help, out of inputs on my parport

[Erik Friesen]

Or mouser.
http://www.mouser.com/Semiconductors/Logic-ICs/Counter-Shift-Registers/_/N-55d4h?Keyword=74hct595FS=True
http://www.mouser.com/ProductDetail/NXP-Semiconductors/74HC595N112/?qs=sGAEpiMZZMtsbn1GaJyslyeJrXytowv1%2fYsIv18i%2fyU%3d


On Tue, Feb 5, 2013 at 9:11 AM, Ralph Stirling 
ralph.stirl...@wallawalla.edu wrote:

 Digikey.com .  You also might consider 74HC595, 74HC497, or
 74AHC595 and 74AHC597.

 -- Ralph
 
 From: kqt4a...@gmail.com [kqt4a...@gmail.com]
 Sent: Tuesday, February 05, 2013 6:05 AM
 To: Enhanced Machine Controller (EMC)
 Subject: Re: [Emc-users] Help, out of inputs on my parport

 On Sun, 27 Jan 2013, Kip wrote:

  Greetings all!  My shift registers seem to be working well as a cheap
  and easy port expander!   Apologies for how long it took me to write it
  up, but we are currently in the middle of the FIRST Robotics Challenge
  build season, so I'm spending almost every evening mentoring high school
  students.
 
  I've attached a schematic of the circuit used.  Notice it creates 16
  output and 16 input lines using only 3 output and 1 input pin on the
  parallel port.
 
  I also attached the .comp file to drive it.  It count base-thread ticks
  for timing.  I have it configured to update every 1 ms with my system,
  but this is configurable.  While 1 ms is too slow for micro-stepping, it
  is plenty fast enough to detect the pulses from my cooling fan
  tachometers, turning pumps on and off, reading control panel buttons,
  and blinking status LEDs.
 
  The complete write-up can be found here:
 
  http://www.shafferhouse.org/linuxcnc/LinuxCNCShiftRegisters.pdf
 
  It goes into a lot of detail that is probably too basic for most of the
  readers of this list, but please let me know if there are things you
  would like me to add.
 

 can someone suggest a source for the 74ls595 and 74ls597


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Re: [Emc-users] Adjusting Work Coordinates and Offsets?

[Erik Friesen]

This takes some special work for your g code, but I have done something
remotely similar.  What I did was use the G54-59 offset system and G file
subroutines called from pyvcp.

If I have this straight in my mind what you are doing, it would be
something like this.

1. Home to G54 x,y, and z.

2. Pre-define some variable(for Z offset) that is set using a g subroutine
called from a pyvcp button/value combo.

3. Include a subroutine or code in your G code(set up your post processor
to include it) that sets up G55 based on G54 + your Z offset, and sets the
coordinate system to G55.

4.  Include code ending to put back to coordinate G54.

One downside to this, is that unless your chosen variable is persistent, it
won't show up correctly in the axis preview.  One workaround is to use one
of the unused persistent variables from something, or the way I did it, I
custom built linuxcnc to add some loose persistent variables.


On Thu, Jan 17, 2013 at 6:38 PM, Kirk Wallace
kwall...@wallacecompany.comwrote:

 On Thu, 2013-01-17 at 17:19 -0500, Todd Zuercher wrote:
 
  Is there a simple  way to add or subtract a small amount to the offset
  for an axis.  It seems all the G10 commands replace the stored value,
  What I would like is a comand that adds to the old one regaurdless of
  machine position .  Is there such a thing?  How hard would it be to
  make one?

 I seem to recall something like this with the G92 code:
 http://www.linuxcnc.org/docs/html/gcode/coordinates.html

 Sorry, if this is a red herring.
 --
 Kirk Wallace
 http://www.wallacecompany.com/machine_shop/
 http://www.wallacecompany.com/E45/index.html
 California, USA



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Re: [Emc-users] An Addenda to the button discussion the other day

[Erik Friesen]

I have been doing the buttons with a .015 end mill, and model enamel
paint.  I let it dry a few hours, then wipe clean with naptha.  Works
pretty well.


On Tue, Dec 11, 2012 at 6:44 AM, Mark Wendt wendt.m...@gmail.com wrote:

 On Tue, Dec 11, 2012 at 6:40 AM, Dave Caroline
 dave.thearchiv...@gmail.com wrote:
 
  Very nice!  Quick question.  is the clock face a brushed whitish color
 
 
  or brushed brass?  I'm presuming the differences in the photos were
  due to lighting and/or filters?
 
  Some rubbish lighting during that sequence depending if the camera
  decided to flash and the ambient light is fluorescent with a little
  sunlight from a window sometimes and the state of the brass (filthy at
  the start)
  The brass is a pale brass as it is cast brass
  picture PD1995 is cleaned brass with a (600 grit iirc) matte finish
  ready for silver plating
  pictures PD2000, PD2002 are after silvering and show a reasonable colour
 balance
 
  This guy has written up the process of waxing, graining and silvering
  http://www.davewestclocks.co.uk/silvering_clock_dials.htm
 
  My set of pictures were mainly to document a particular dial I worked on
  and the hole filling (rivet in new brass) and re engraving by hand (I
  remember doing the engraving and hole filling)
  Boss did the posts for the movement
  Two of use shared the work on the dial and I cannot remember who did
  the waxing and silvering
 
 
  Dave

 Dave,

 Thanks for that. Beautiful work!

 Mark


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Re: [Emc-users] Button paint and engraving

[Erik Friesen]

Thanks for those ideas.  I really would like black buttons with white
lettering, but the only way to get translucent buttons is in white.  I
guess I could consider reversing it, and infilling the engraving.

My initial experiments didn't work well doing infilling, so I did one using
a black auto primer and engraved the button, which worked well.

Really the right way to do this would be to get a silicon keypad made, but
for a one off project that is unworkable.


On Fri, Dec 7, 2012 at 11:20 PM, dave dengv...@charter.net wrote:

 On Fri, 2012-12-07 at 22:44 -0500, Bruce Layne wrote:
  I reverse laser engrave legend plates, device labels, operator panels
  and sometimes prototype membrane switches.  I've also done front surface
  engraving.  I assume that's what you're doing on these switches.  The
  big problem with that is that fingers activating the switches will erode
  the paint from a front engraving.
 
  If you're stuck with front surface engraving, then I'd engrave deeply
  and use a lot of paint, or several layers of paint and several layers of
  clear coat on top.  Another trick that can work well is to use a liquid
  paint instead of a rattle can of spray paint, fill the deeply engraved
  letters with it rather than using several coats of spray paint, and use
  a solvent to remove the excess paint from the top surface of the key
  cap.  Make sure the solvent is compatible with the key cap plastic.  Or,
  let the paint dry thoroughly and mechanically remove it from the top of
  the key cap so it only remains in the engraved letters.  Fine sandpaper
  or ScotchBrite works well for this.  If you want a glossy surface
  instead of the brushed finish you'd get with unidirectional sanding or
  the matte finish you'd get from random sanding, you can finish with 600
  grit paper and then Micromesh or Abralon (1200-1500 grit foam backed
  ultra-fine sandpaper).
 
  I have an EFD-1500 electronic fluid dispenser that I've used with a very
  fine gauge needle on the syringe to dispense paint into engraving.  It
  helps to use a lighted magnifier, have a steady rest for your hand, and
  go easy on the caffeine for this delicate operation, but the paint wicks
  well and fills the engraved letters with no mess on the unengraved top.
  Model paint from a hobby shop might work well for this.  Fingernail
  polish might work too.
 
  For engraving jobs with large and simple fonts, there are paint sticks
  that look somewhat like felt tip markers.  They dispense paint instead
  of ink, so they fill the engraving well and the paint is fairly opaque.
 
  You might have some luck putting tape over the top surface, engraving
  it, spray painting it, allow the paint to dry and then remove the tape
  which served as a spray shield.  This would probably work a lot better
  for laser engraving rather than rotary engraving with a small cutting
 bit.
 
  There is typically better coverage with a good brand of paint like the
  Krylon that you're using because there is apparently more pigment in the
  paint, and the solvent in the better brands of paint seems less likely
  to orange peel when applied to plastic than the 99 cent el-cheapo
  paint.  I used some black spray paint recently from a major
  manufacturer, probably purchased at Lowe's, that advertised twice the
  coverage.  It was marketed as something like ultra coverage or ultra
  coat.  That might help your translucency problem.
 
  I hope you bought extra buttons for a little trial and error.  This
  one-off prototype stuff usually involves some waste.
 
  I recently got in a hurry and accidentally had the laser cut about half
  an inch off the edge of the $32 ultra scratch resistant polycarbonate
  sheet that I was reverse engraving for the top of the tool rack for my
  soon-to-be-CNC milling machine.  Then I decided to try to front surface
  engrave the HDPE substrate even though I knew that was unlikely.  Sure
  enough, the material didn't engrave well and required five passes to get
  the engraving depth I wanted.  Then the paint wouldn't stick to the waxy
  surface, chipped and flaked out, and looked awful.  I bought another $32
  sheet of polycarbonate and laser engraved it the night before last,
  painted it yesterday, and I'm going to epoxy it to the HDPE substrate.
  Hopefully the two square feet of surface area will provide a strong
  enough epoxy bond, even on the HDPE.  If not, I'll use countersunk flat
  head screws... or I'll use PVC for the 3/4 thick substrate.  I'll test
  the bond strength with the botched piece of polycarbonate and a scrap of
  HDPE first.  I don't want to buy a third sheet of $32 plastic!  Oh, the
  joys of prototypes and one-off custom work.
 
  Good luck!

 Just a random thought ... front engrave decently deep and then fill with
 colored epoxy and polish flush. This implies that you have clear buttons
 tho.

 May the force be with you.

 Dave
 
 
 
  On 12/07/2012 08:25 PM, Erik Friesen wrote:
   I painted some of these
   http

Re: [Emc-users] Button paint and engraving

[Erik Friesen]

I doubt it.  Some companies won't talk to you unless you are willing to
spend $50k, the next may want $1k, its a gamble.  They do put an stl of the
button on their website, I guess if I had a two color 3d printer I could do
it that way?


On Sat, Dec 8, 2012 at 8:36 AM, Mark Wendt wendt.m...@gmail.com wrote:

 On Sat, Dec 8, 2012 at 8:31 AM, Erik Friesen e...@aercon.net wrote:
  Thanks for those ideas.  I really would like black buttons with white
  lettering, but the only way to get translucent buttons is in white.  I
  guess I could consider reversing it, and infilling the engraving.
 
  My initial experiments didn't work well doing infilling, so I did one
 using
  a black auto primer and engraved the button, which worked well.
 
  Really the right way to do this would be to get a silicon keypad made,
 but
  for a one off project that is unworkable.

 Erik,

 Is there any way you can get already coated black buttons that are
 translucent underneath the finish and then engrave them?  Would save
 the step of trying to paint them and the finish that comes on them
 would probably be more durable.

 Mark


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Re: [Emc-users] Button paint and engraving

[Erik Friesen]

I don't see an easy way to make multicolored silicon rubber buttons, though.

I shouldn't even open my mind to doing silicon, its one of those things
that is tempting though.

I guess I could try making my own buttons with translucent black acrylic.
I am stuck using something that will fit on top of the matching switch. -
http://www.digikey.com/product-detail/en/4FTH982/679-2255-ND/2034811 , as I
am $850 into 1 4-layer, and 2 2 layer boards, already.


On Sat, Dec 8, 2012 at 3:32 PM, Jon Elson el...@pico-systems.com wrote:

 Bruce Layne wrote:
  If you're stuck with front surface engraving, then I'd engrave deeply
  and use a lot of paint, or several layers of paint and several layers of
  clear coat on top.  Another trick that can work well is to use a liquid
  paint instead of a rattle can of spray paint, fill the deeply engraved
  letters with it rather than using several coats of spray paint, and use
  a solvent to remove the excess paint from the top surface of the key
  cap.
 I did this once to repair a button.  i filled the letters all the way,
 and then sanded the
 excess paint off.  it worked very well.

 Jon


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[Emc-users] Button paint and engraving

[Erik Friesen]

I painted some of these
http://www.digikey.com/product-detail/en/1WD16/679-2144-ND/2034700 buttons
today, and engraved them, but find that the paint is not curing like I
would like (not very durable), and the paint is soft enough that they did
not engrave very nice.  Not only that, these are backlit buttons, and the
paint I used(flat black krylon from wal-mart) is a little translucent.  Any
suggestions about a better type of paint?
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Re: [Emc-users] running PyCAM (dev) under Windows (was: Text on rounded button.)

[Erik Friesen]

Also, I don't know if its how I did it or what, but I find the generated
code very jerky, not following the line well, with probably .010
deviance.  If you want more info let me know.

I ended up writing a script using c# under windows(yay for windows) that
does what I need.  (duck the flying debris)


On Tue, Dec 4, 2012 at 5:42 PM, Erik Friesen e...@aercon.net wrote:

 I get a rather serious exception when trying to enter a tool size in
 decimals, it logs out completely.



 On Fri, Nov 23, 2012 at 8:15 AM, Lars Kruse li...@sumpfralle.de wrote:

 Hi Erik,

 sorry - this thread slipped out of my sight for ten days ...


 Am Mon, 12 Nov 2012 08:18:50 -0500
 schrieb Erik Friesen e...@aercon.net:

  Ok, got pycam going on linux.  A couple things..
 
  Generate toolpath generates a flat toolpath, it requires generate all to
  generate the curve.

 almost :)
 There are currently four path strategies:

 http://sourceforge.net/apps/mediawiki/pycam/index.php?title=ProcessSettings#Strategies
 Just choose the surface strategy if you don't want to work on flat
 layers.


  MM seems to be hard coded here??

 no way! :)
 Take a look at the preferences - there you can select inch.


  Is there a place to input retract height?

 I am not sure: is this similar to the concept of safety height?
 This could be found in the preferences as well.


 Cheers,
 Lars


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Re: [Emc-users] running PyCAM (dev) under Windows (was: Text on rounded button.)

[Erik Friesen]

I get a rather serious exception when trying to enter a tool size in
decimals, it logs out completely.


On Fri, Nov 23, 2012 at 8:15 AM, Lars Kruse li...@sumpfralle.de wrote:

 Hi Erik,

 sorry - this thread slipped out of my sight for ten days ...


 Am Mon, 12 Nov 2012 08:18:50 -0500
 schrieb Erik Friesen e...@aercon.net:

  Ok, got pycam going on linux.  A couple things..
 
  Generate toolpath generates a flat toolpath, it requires generate all to
  generate the curve.

 almost :)
 There are currently four path strategies:

 http://sourceforge.net/apps/mediawiki/pycam/index.php?title=ProcessSettings#Strategies
 Just choose the surface strategy if you don't want to work on flat
 layers.


  MM seems to be hard coded here??

 no way! :)
 Take a look at the preferences - there you can select inch.


  Is there a place to input retract height?

 I am not sure: is this similar to the concept of safety height?
 This could be found in the preferences as well.


 Cheers,
 Lars


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Re: [Emc-users] running PyCAM (dev) under Windows (was: Text on rounded button.)

[Erik Friesen]

Ok, got pycam going on linux.  A couple things..

Generate toolpath generates a flat toolpath, it requires generate all to
generate the curve.

MM seems to be hard coded here??

Is there a place to input retract height?

Anyway, thanks for the help, I think this is going to work.  And, thanks
for the trouble of working on pycam.


On Wed, Nov 7, 2012 at 5:57 PM, Lars Kruse li...@sumpfralle.de wrote:

 Hi Erik,


  Hacked the dll into the directory, got it going, however, whenever I
 click
  item to view, exception is thrown
 
  Gdk:ERROR:gdkgc-win32.c:748:get_impl_drawable: code shouhd not be reached

 I am sorry to hear that you stumbled upon this kind of ugliness!
 Sadly the OpenGL library that is used by PyCAM is slightly non-maintained
 in
 the Windows world. Thus I can't help you here.
 One or two years down the road PyCAM will switch to another OpenGL library
 -
 but this is of no help for you right now :(

 cheers,
 Lars


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Re: [Emc-users] Text on rounded button.

[Erik Friesen]

Back to the task at hand, I have downloaded and built the probekins
source.  Comp'ing probekins.c into 2.6.0 doesn't seem to work.

So, if probekins loads properly, how do I know?

Some things that are unclear to me.

#1.  Will a properly loaded mesh be depicted in the axis view, or will it
display flat as normal?

#2.  If I want to use stlvis, how do I obtain matplotlib?  The directions - $
sudo apt-get remove python-matplotlib $ sudo apt-get install easy_install $
sudo easy_install matplotlib  dont work on my machine, I can't find
easy_install, nor can I find matplotlib.

#3. Is there a proper time to load the mesh?  Before/After?? starting
linuxcnc??

#4. In the documentation wiki, it says -
Example

Assume you have a mill with a 10in x 10in x/y usable area. You probe the
workpiece at a few irregular points, the resulting x/y/z values are stored
in a file called probe.txt and look like so:

 -100 200 0.5
 210 -120 0.2
 -150 111 2.1
 -44 -121 1.2
 -12 180 1.4

I simply do not get this.  How does -100 200 0.5 represent an area in
a 10x10 workarea?
In my mind, this represents x-100 Y200 Z0.5 which is approximately 190
inches away from the workspace?




On Wed, Nov 7, 2012 at 4:56 PM, Greg Bernard yankeelena2...@yahoo.comwrote:

 I've been using V-carve Pro, Aspire's little brother and have to say it
 is worth every penny of it's $600 price tag. I will definitely purchase
 Aspire as soon as I can afford it. It is without a doubt the most
 satisfying software purchase I've ever made and it runs without any
 problems under Wine. Free software is always good and open-source is even
 better but sometimes I just want to get the job done without a huge
 learning curve and working around quirky software.



 +++
 Anyone who believes exponential growth can go on forever in a finite
 world is either a madman or an economist.

 -Kenneth Boulding, economist




 
  From: Gene Heskett ghesk...@wdtv.com
 To: emc-users@lists.sourceforge.net
 Sent: Wednesday, November 7, 2012 3:34 PM
 Subject: Re: [Emc-users] Text on rounded button.
 
 On Wednesday 07 November 2012 16:30:47 Jack Coats did opine:
 
  www.vectric.com
 
 Thanks for the momentary shortness of breath, that $2G price tag could be
 dangerous to this old farts well being.  Being 78 is NOT for wimps. ;-)
 
 Besides that, there is likely another hidden cost, it only runs on the
 full
 blown copy of winderz I'll bet.
 
  Has 'aspire' software that I think could handle the problem of writing
  engraved or raised lettering on curved or dome style surfaces.
  No it is not open or free software, but it is pretty amazing even at
  it's 'steep' price.
 
  I just wish my artistic talents were up to software I can afford now,
  even without Aspire.
 
 Chuckle, Jack, that makes at least 2 of us. :)
 
 Cheers, Gene
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