Re: [Emc-users] Happy 82nd to me, and the latest version of my G76 tweaker for you

[Jack Coats]

Hope you have had a great anniversary of full revolutions around Sol!
.. .In short, Happy Birthday Gene!

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Re: [Emc-users] What does "CNC" really mean?

[Jack Coats]

I remember my dad going to take an NC course at Sundstrand.  The
concept of NC (Numeric Control) vs manual control was a big step in
industry (think of looms vs Jacquard looms - a lot of manual labor
between these technologies).  The makers of big mills that milled
parts for Bell Helicopters back in the '60's (and others, this is just
where my Dad worked).  They used paper (actually mylar  backed paper
to let the tapes last longer) tape ASCII codes on a Friden Flexowriter
(a Teletype style machine mainly used to punch holes in tape for
communications or equipment control).

The N in Numeric Control was a nod to the fact that numbers were used
versus analog signals.  Today we might use the term Digital Control
instead of Numerical Control.  --  When I was in college there were
still Analog Computers being used (a waning technology even then) and
the difference between analog and digital were pronounced.  Today the
lines blur, but even today there are some occasions where analog
outshines digital in given applications.

The 'controller' that read the tapes and controlled the machine was
the size of a large refrigerator at the time, and the only computer at
the company was a new IBM 360 used in the accounting department.

Over the years the paper tape readers and controllers have been
replaced by computers with various types of input (from paper tape,
magnetic tape, to networking of various flavors).

It was a big step in industry to go from G-codes punched into paper
tape to computer controlled (still with basically the same G-codes,
just in file format instead of paper tape).

Any more, CNC vs NC is just a historical moniker (like use of
cell-phone or mobile-phone versus just telephone).  Today with
computers being so pervasive in our lives (inside light bulbs,
multiple in your car, and replacing simple analog circuits just about
everywhere) even noting that a computer is involved is less important
than the function it enables.

If CNC bothers you, deal with it.  It is a historical thingie that our
society uses.

Just enjoy the technology and its uses, or don't.  Your life is up to you.

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Re: [Emc-users] Need some advice

[Jack Coats]

The "Civil Forfeiture'' laws are what you are discussing.  Yes, traveling
with large amounts of cash seems to make you the target of this especially
when traveling long distances.  It is a law designed to help reduce the
drug trafficking by allowing law enforcement to capture suspected 'drug
money' and use it to supplement the budget of local law enforcement. ...
To many agencies are using it as a 'revenue enhancement tool' instead and
not using it as the law was initially intended, especially since it is
easier to find and acquire and you don't have to do any ugly things like
take anyone to court or arrest them or marandize them.  The are effectively
'arresting the money' or other assets, not the people carrying the assets.

Here in TN it has been a real problem and some laws are coming down to make
it less 'profitable' for the agencies to use this law and to allow for
easier and faster recourse for the property owners to sue to get the
money/assets back.

The way is its being described in the media is that if you are caught with
large sums of money (in TN on I40, mainly going from East to West, since
drugs tend to flow West to East), the money is arrested, not the people
carrying it, because it is ASSUMED that large sums of money is ONLY used to
purchase drugs.  Some families on vacation, persons going to purchase show
cars, etc seem to be the easy targets since many carry cash for this
purpose.  I could see folks going to purchase large machine tools or
material could be caught in this fiasco as well.

Locally there have been various expose's by TV anchors to get this stopped,
or at least increase viewership.  I guess it is working since legislation
keeps coming up to stop this or at least curb the efforts.  I do not know
the current state of this legislation.
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Re: [Emc-users] Copying an installation

[Jack Coats]

You might give Clonezilla a try.  Burn it to a  USB drive, Boot from that
drive then generate an image on another USB, hard drive, or whatever.

Checkout clonezilla.org for details.  It can also work over a network, but
the devil is in the details, as always.

The resultant drive should be bootable.

On Sat, May 7, 2016 at 10:34 AM, Danny Miller  wrote:

> So as per previous thread, I may be moving this to another PC.  And
> probably change to an SSHD.
>
> I spent a ridiculous amount of time getting the OS and LinuxCNC RT
> installed and configured.  And I didn't do all of it myself so it's not
> a straight shot to repeat.  I'm just saying if I start from scratch
> again, this will not be a quick operation.
>
> How reliable is it to just copy the entire installation to a new drive
> on a new (different) machine?
>
> On Windows, I've just moved my old drive to a new machine a number of
> times.  But I was foiled when I replaced my AMD-based motherboard with
> an Intel-based MB, no boot.   My LinuxCNC machine is currently on an
> Intel Core Duo, and I might change to an AMD-based machine. Will it even
> be able to boot?  Will it be easy to adapt to an AMD without a full
> reinstall?  What's it take to adapt it?
>
> I was told there's a convenient tool or method for creating an image of
> the whole installation (OS and LinuxCNC) and packing it up.  Is that
> true?  'Cause I sure wish one of those had been on Bittorrent, that
> would have saved my a crazy amount of time.  If it can be done maybe
> I'll do it and put it out there for others.
>
> Danny
>
>
>
>
>
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><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." - Admiral
Grace Hopper, USN
"The most dangerous phrase in the language is "We’ve always done it this
way"-- Admiral Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I learn." -
Ben Franklin
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Re: [Emc-users] Arrival time Moving average (time, period)

[Jack Coats]

My knee-jerk algorithm would say subtract one average from the total of all
averages, add in the new period, and divide by the number in the average.
If programming in assembler I would go with 128 rather than 100 steps to
keep the division easy (rotate a copy of the accumulator right 7 bits).
Divide can be costly if done in hardware.

The 'right way' is probably to keep a list and re-add them each time just
having a FIFO queue for the individual timings. ... Also speed things up
keep the 'total' in an accumulator, and process using the 'knee-jerk'
method, but subtracting the entry about to rotate out of the queue before
adding the new one.  You still have the divide of the accumulation to do.

I hope this helps.

On Mon, Apr 11, 2016 at 7:05 AM, Nicklas Karlsson <
nicklas.karlsso...@gmail.com> wrote:

> I have made some work on a micro controller based stepper generator and
> steps are now generated.
>
> To keep stepper generator in sync with linuxcnc there is a need to
> calculate average phase and period of the message arrival times. I expect
> the same algorithm is rather useful to have then working with linuxcnc for
> other purposes and I will send the source code once implemented if somebody
> else is interested in it.
>
> Is is rather straightforward to calculate from for example the last 100
> arrival times but a moving average algorithm would be preferred to reduce
> CPU load. Do anybody have any ideas?
>
>
> Regards Nicklas Karlsson
>
>
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-- 
><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." - Admiral
Grace Hopper, USN
"The most dangerous phrase in the language is "We’ve always done it this
way"-- Admiral Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I learn." -
Ben Franklin
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Re: [Emc-users] OT: Linux Security

[Jack Coats]

It isn't that Linux isn't a target.  It is.  Just not as 'popular' a
target.  There are antivirus that can be run on Linux, but they tend to
focus on PC virus, partly because Linux is used often as storage server,
and scanning the users files is a reasonable thing to do.

In my experience, Linux is more likely hacked if it is used 'open' with
access to the internet.  Good admins will firewall it (internally at a
minimum) and only allow ports and services to run that are known and
understood.  Yes, I got caught with an to-open server (when I was first
getting into Linux/UNIX)  and hacker got in.  It wasn't a 'virus' or
'malware', it was un-configured ports/services that were not closed down
that allowed them to get in.  ...  Formatting the disk and re-installing
with network access nailed down solved my problems, but I didn't have much
on that machine at the time, so all was good ... it was painful, but good.

The hacks I have had that have been successful since then are basically
users allowing malware malware in by going to 'bad' web sites.

Windows is still the most popular target.  Apple equipment next, and yes,
there have been found one or two virus found that target Linux.  Thankfully
the Linux virus don't seem to spread as fast.  Malware, especially web
based, is more prevalent that anything else I have found.

Still, air gapped machines (not internet connected) are more secure from
outside attacks than others.  If not going that far, put a good firewall or
two in the way before getting to the internet.  But you still need to
configure the firewalls well and maintain them.

Will this make for 'perfect' solutions?  No.  But it is better than most.
I am sure there are others with better ideas, but doing this won't be
totally wrong, but most solutions have problems somewhere in them, whether
the problem is easily or currently known or not.

Just my suggestions. ... Now back to your regularly scheduled program.
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Re: [Emc-users] OT: Linux Security

[Jack Coats]

I have used Linux for a long time.  If you don't go 'trolling' un-trusted
web sites and using email on the same computer you use for EMC,
there is no need to worry.

Why?  Linux is a 'less valuable' target for hackers than commodity windows
and even Apple machines.  There are also fewer of them in general use by
individuals.  The number of servers or specialty computers is pretty high
(embedded systems, machine control, servers, 'background' data center
machines, web servers, even routers and firewalls) but tend to be a little
harder to hack if set up well.

I would suggest not using your EMC machine for general web surfing or
email.  Use the browser for needed updates or reporting problems, but keep
non-EMC use off.

I DO suggest to have it behind a firewall.  If you can live with it, think
about removing the ethernet attachment (unplug the wire) unless it is
absolutely needed for a short time (i.e. maintenance, etc).

Let us know what you decide.
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Re: [Emc-users] Copying G code files from PC to PC

[Jack Coats]

Rather than hardware or sending information 'offsite' to Dropbox or
similar, I was wondering if something like bittorrent sync could be used?
It can probably run under LinuxCNC, but I haven't checked.

https://www.getsync.com/

It does support Windows, Mac, Linux and Linux on ARM, FreeBSD, Apple and
Android mobile devices, and various NAS vendors.  In any case I have heard
good words about it but I haven't used it.
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Re: [Emc-users] Micro-switch repeatability

[Jack Coats]

I saw some prox sensors ebay (china trash) that folks on 3D printers are
using for automatic bed leveling compensation.  They are about $2.50/ea
delivered, others are $10 if you want a better quality.

Their repeatability is good,

If using switches, please check the brand.  Microswitch and possibly Cherry
make great switches.  Some others are 'problematic' to be kind.

Enjoy.

On Mon, Feb 15, 2016 at 5:57 PM, Gene Heskett  wrote:

> On Monday 15 February 2016 18:44:00 Bertho Stultiens wrote:
>
> > Hi,
> >
> > I'm looking for an on-the-cheap way to do reasonable homing. Usual
> > switches for the purpose cost a lot. The machine only has a
> > repeatability of 0.02mm, so it may just be a waste to use too accurate
> > (expensive) switches.
> >
> > Has anyone numbers on the repeatability of "normal" micro-switches?
> >
> > Micro-switches are (relatively) cheap and mostly not too shabby, but I
> > have a not seen any hard data on repeatability (other than datasheets
> > saying that they are made for repeatability).
>
> I am using some micro-mini roller lever junk I got for 6 bucks a bag of
> 10 from ebay.  Repeatability according to my dials is well within .001"
> even with crap switches.  Its a "dry' circuit, so as long as the
> contacts are clean, there's very little other wear.  MMMV after a long
> time, but its not beem noticable in 6 months now.
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page 
>
>
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><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." - Admiral
Grace Hopper, USN
"The most dangerous phrase in the language is "We’ve always done it this
way"-- Admiral Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I learn." -
Ben Franklin
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[Emc-users] Nesting Parts - An Addin?

[Jack Coats]

Just ran across this:

http://svgnest.com/

It would be a great open source 'addin' for someone to do that is more
of a programmer than I am (anymore), for EMC/LinCNC

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Re: [Emc-users] Any idea how they machine these?

[Jack Coats]

When in college at TAMU, the mech engr machine shop had some big
equipment.  One lathe would swing about 6' dia, and 20'+ length in the
bed plus head stock.  That was the largest engine lathe I have seen.
I never saw them use it, but it was kept in usable shape and yes, they
kept some standard tooling around for it.  Awesome equipment. (that
was in the early 1970's and it had been there for years).

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Re: [Emc-users] To Peter C Wallace

[Jack Coats]

Back when I received computers via fedex with multiple 'boards' in
them, the ones that did the best were ones where after each board was
inserted, a bead of pure silicon caulk (the clear kind) was put along
the top of the connector so it would contact both the connector and
the board.  It stayed soft over time and was easy to pull off when the
board is pulled for any reason.  Typically it was put on one side of
the connector/daughter board (often the back) to ease installation.

The idea of using hot-glue is similar, but hot-glue can set up
'harder' than the caulk over time. --- Still, it is the same thought.

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Re: [Emc-users] Smart-Serial cabling

[Jack Coats]

My only suggestion is to ensure the wire you have is stranded, not
solid.  Stranded will be 'softer' and deal better with the bending
needed for use in drag-chain use.  Solid core is better for
infrastructure use (putting in walls), stranded is found in 'patch
cables' and used in wiring closets to connect the infrastructure or
from a wall to equipment in an office.

Great use.  BTW, Cat6 or 7 will have a bit more noise rejection, but
Cat 5 is cheaper and will do well.  You will find some of the higher
cat numbers have shielding, much cat 5 does not have shielding but
depends on the twisted wire pairs for noise rejection (each pair is
twisted at a different twist rate, so they don't cross contaminate
each others signal).

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[Emc-users] Rookie Question - Direct wire or connectors

[Jack Coats]

I am looking on the best way to connect my NEMA 17 steppers to the
Stepper drivers.

I am contemplating either direct wiring (just solder, tape, heat
shrink tube) each wire back to the screw terminals on the stepper
driver.

Second option is using connectors, DIN (screw attach cover) or Molex
push connectors near the stepper, and near the controller box where
the stepper drivers reside.

Suggestions?

Thanks in advance.  ... Jack in TN

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Re: [Emc-users] Does anyone here use Qucs?

[Jack Coats]

That is what this list is for.  Remember, if you have a question, someone
else probably does too.

If you get too obnoxious someone will give you a hint.

On Fri, Dec 25, 2015 at 12:21 PM, Gene Heskett  wrote:

> On Friday 25 December 2015 11:56:09 Vyatcheslav Perevalov wrote:
>
> > В Fri, 25 Dec 2015 11:31:02 -0500
> >
> > Gene Heskett  пишет:
> > > Cheers, Gene Heskett
> >
> > I do. Nice simulator IMHO.
>
> Would you be open to answering some beginning dummies questions?
>
> Thank you, Vyatcheslav Perevalov.
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page 
>
>
> --
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-- 
><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." - Admiral
Grace Hopper, USN

"The most dangerous phrase in the language is, We’ve always done it this
way"-- Admiral Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I learn." -
Ben Franklin
--
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Re: [Emc-users] is anyone here buyingbfrom aliexpress?

[Jack Coats]

I purchase some things there.  Delivery on small stuff is fast, some stuff
is slow.

I find it is like buying from Walmart, expect low quality and be
happily surprised by some.
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Re: [Emc-users] How to make a frame square?

[Jack Coats]

All materials 'move'.  A blacksmith friend showed me how badly it moved
with a few bangs of his hammer on mild steel.  You can 'easily' stretch,
widen, flatten, elongate, steel and most metals.  Getting them to stay in
one place over the long haul is almost impossible.

Still metal workers do a better job of it (due to usually using the same
type of material - steel, brass, aluminum, titanium, tec) than woodworkers
do.  Wood moves due to weather (mostly humidity, metal moves due to
temperature and physical abuse), and wood moves much more and
more erratically than metals.  (Listen to a few WoodTalkOnline podcasts,
wood movement is a constant issue, especially when doing 'cross grain'
work).  There are some good video's out about cross grain 'bread board
ends' and how to NOT hard attach the ends to the long boards, but to attach
it in only one location (typically center) and leave other 'alignment pins'
in elongated holes to allow movement (so the assembly won't tear
itself apart).

Plastics of all kinds (epoxy's, ABS, PLA, TFE, etc) all move, typically due
temperature or mechanical abuse, sometimes chemical.

In metals, Aluminum is very thermally active and moves more than steel with
temperature changes.

There are reasons why big rocks break to make small rocks.  Temperature
changes and physical abuse (like water getting in cracks, doing some
erosion, but often it freezes and expands (water is the densest at 4C (39F)
and expands getting warmer or colder, even when in ice form - this is from
memory for current info, we need to find someone more informed than I am)

In the last few years I have befriended a 'concrete geek'.  I have found
out more about concrete chemistry, fracturing, curing, flexing ability than
I ever thought.  Even simple concrete isn't simple, let alone finishing,
forming, and uses!

Materials science can be facinating but for most of us, just knowing that
nothing is absolutely stable is helpful.
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Re: [Emc-users] Probe

[Jack Coats]

On Mon, Dec 14, 2015 at 11:41 AM, Viesturs Lācis 
wrote:

> Hardened steel touch probe with rubby stylus for CNC machines


http://stores.ebay.com/imsrv

Is where I saw several different sizes.


-- 
><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." - Admiral
Grace Hopper, USN

"The most dangerous phrase in the language is, We’ve always done it this
way"-- Admiral Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I learn." -
Ben Franklin
--
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Re: [Emc-users] Shop Vac mufflers

[Jack Coats]

If you want to do a soundproof enclosure, you need to do it like you would
build a 'soundproof' room.  Just in a smaller form.

The DIY 'sound studio' type of thing can be in a frame room, with a
acoustically insulated floor (not touching the floor below it, using
shock absorbers/dampeners, sound absorbing material (not concrete or
linoleum!), walls are heavy.  You can use sheet rock,
some cover it with lead sheets - yes, sounds goofy, but mass reduces
sound transmission, then hang ANOTHER sheet of sheet rock over it with
acoustic hangers, they look like Z shaped strips of metal,
with one end attached to the outside wall, and the opposite side attached
to the inside sheet rock.  Yes, acoustic dampening helps, in vents
make them serpentine covered INSIDE and out with sound absorbing material
(rock wool works OK). -- No bolts or screws or supports
on top of each other that gives sound a direct chance to transfer from the
'inside' to the 'outside' without having to zig-zag a couple of times
before getting out!

NOTHING should be hard attached through walls or floor to the outside
structure.

For those that don't want to go that far,
http://www.instructables.com/id/Build-your-own-soundproof-studio-in-11-easy-steps/
shows how to make a 'garage band studio'.  Another link:
http://www.diynetwork.com/how-to/rooms-and-spaces/walls-and-ceilings/soundproofing-a-wall
An another: http://www.backtoplastic.com/?page_id=85
>From those you will get a hint as to what makes 'soundproofing' work.  It
isn't easy or cheap.

Several folks here (near Nashville) have professional quality studio's
built in their basements,
With studio, separate sound room for technicians, all insulated from the
rest of the house.  Yes, they go to extremes, but that is
their livelihood as well as passion.

I haven't build a 'CNC SOUNDPROOF ENCLOSURE' but that is why I started
researching it a long time ago.  Distance, mass, reduced reflection,
and absorption are all part of the equation.  Keeping down transmission
through the ground and walls is also important.  You can also 'tune' your
sound reduction to frequency ranges.

I hope this helps someone a bit.
--
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Re: [Emc-users] 25 pin printer connections

[Jack Coats]

I have started looking into GRBL controllers.  Laptop can connect to the
controllers with USB.  But this means not using LinuxCNC, and GRBL uses a
subset (most but not all) of the G-code that LinuxCNC accepts.

Another option could be to use an old desktop to drive your CNC, and VNC
into it for using your remote display (and control).  Just a thought.

On Wed, Nov 25, 2015 at 5:45 PM, chris  wrote:

> I'm sure this has come up a number of times, but I'm looking for a new
> computer,
> most likely a laptop. I've noticed that virtually no computer comes with a
> 25
> pin printer connection anymore, and it would seem that a lot of the new
> laptops
> are coming with the PCMCIA slot either. Since everything seems to be going
> to
> USB what are my options going to be from now on when looking for a
> computer? I'd
> prefer to get a laptop for my next machine, but I want it to be able to
> control
> my cnc equipment. Any suggestions?
>
> Thanks,
> Chris
>
>
> --
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> Use one codebase in this all-in-one HTML5 development environment.
> Design, debug & build mobile apps & 2D/3D high-impact games for multiple
> OSs.
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-- 
><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." - Admiral
Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I learn." -
Ben Franklin
--
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Give your users amazing mobile app experiences with Intel(R) XDK.
Use one codebase in this all-in-one HTML5 development environment.
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Re: [Emc-users] Linuxcnc pre installed, (imrovments --> copyright)

[Jack Coats]

Most good companies understand and are pretty good about giving back
appropraitely.  Bad companies are the ones that need to be harangued,
and even suggest they use a different software 

On Fri, Nov 6, 2015 at 11:15 AM, Karlsson & Wang
 wrote:
> They got the code for free and now they must share improvements for free.
>
> If a pre installed version of linuxcnc is found somewhere we should not 
> forget the most important to check if they added someting useful.
>
>
>
>
> Nicklas Karlsson
>
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-- 
><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the
defense of liberty: soap, ballot, jury and ammo. Please use in that
order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." -
Admiral Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I
learn." - Ben Franklin

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Re: [Emc-users] raid NAS

[Jack Coats]

This turned out to be longer than I wanted, but it addresses several
issues.  I hope it helps someone:


The least expensive version of RAID uses two mirrored drives ( RAID 1
).  Others get a bit more complicated, but they are worth considering
if you need larger amounts of storage.

There are home NAS available that don't have RAID or mirroring.  I
would stay away from those, they are just a network attached disk
drive.

Any drive CAN be used as drives for RAID devices.  There are ones that
are specially designed for RAID use, like Western Digital RED drives,
and there are others from different manufacturers.

Backing up using something like CRASHPLAN or better yet, something
that specifically supports your NAS device, is great.  You can even
backup a NAS manually to another NAS or even just a USB attached disk
drive.

On backups, any backup is good for 'awe shucks' problems (accidently
overwrote or deleted a file).  But for 'disaster recovery' (your house
took a lightning hit and fried the electronics - it happened to me),
the 3-2-1 backup scheme helps.  3 separate backups, on 2 different
media, and 1 of the off-site.

Personally, I use CRASHPLAN and backup machines to on-site USB
attached drives and off the the CRASHPLAN data center.  -- This is for
me and my family, possibly not for your business.  If you use
CRASHPLAN and you have a good internet connection, you can backup to a
computer at another location (like at grandma's house across town, or
at the office, or a friends house).  CRASHPLAN is not perfect and I am
just a user and no ties other than that.  It is cross platform
compatible from Linux, Windows, and I think Apple (I don't have
those).  Pretty easy to set up.

BTW, there are other great backup programs out there.  And 'file
sharing' programs really don't count (think Dropbox ... I use it too,
but it is a different tool for a different need/use).

On any backup, they must be monitored and tested.  At least every few
months restore a few files to make sure it is doing OK.  Being a bit
OCD and ADD, daily detail monitoring I knew was best (and fed my OCD),
but it drove my ADD crazy!  Don't stress over it, but do it regularly.
Having software email me 'reports' when things are missed for a few
days, it helps me a lot.

Oh yes, I am cheap.  CRASHPLAN has a 'family plan' for up to 10
machines for unlimited storage to use their central servers for one
price.  If you have some friends that use it, you can backup to THEIR
CRASHPLAN machines for free (this is what you would use to backup to
Grandma's or to a work computer.

CRASHPLAN is NOT open source, but you can install it for free and give
it a try.  There are some good open source programs out there, but
they tend to take a bit more effort to get set up.

I will never claim to be an expert, but I retired from IT after 35
years, the first 20 as a developer, the last 15 as a sysadmin on
mainframes, UNIX, and windows systems.  The last 10 years was doing
backups and disaster recovery principally.

I hope this helps a little.

Enjoy.

On Wed, Nov 4, 2015 at 8:02 AM, John Thornton  wrote:
> Just looking up raid NAS and it looks like there are several levels of
> raid and NAS is a Network Attached Storage. Is there something special
> about NAS or can you do that with any hard drive?
>
> JT
>
> On 11/4/2015 7:35 AM, Jim Craig wrote:
>> I have a raid NAS that I send all of my gcode to. Then I open it
>> directly from the NAS into LinuxCNC. Then I don't have to worry about
>> what machine has the latest code etc. The latest is always on the NAS.
>> And it it is backed up.
>
>
> --
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-- 
><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the
defense of liberty: soap, ballot, jury and ammo. Please use in that
order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." -
Admiral Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I
learn." - Ben Franklin

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[Emc-users] Dubious mails - Appology

[Jack Coats]

Normally I run Linux, but need winders for wife and an application or so.

Sorry for the problems.  -- BTW, I do run antivirus on win machines, and
malwarebytes with updated databases regularly.
Nothing has been found in months.

Direct mail is preferred for this subject, as this subject is off-topic for
the EMC group. ... Thanks.
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Re: [Emc-users] [Emc-developers] Off topic question - Need help with remote cell phone data connection via site to site VPN

[Jack Coats]

if you need real encryption, put in a netscreen 5 on each end and get a
signed certificate for them.  When working for IT at a bank, we used them
for our wire transfers for international wires,  It can be hard core
encryption.  Once set up, it is dead easy to use.  Netscreen 5 refurb is
$125 or so on Amazon.  New $600.  Owned by Juniper Networks now days.

On Sat, Oct 17, 2015 at 5:26 PM, Jack Coats <j...@coats.org> wrote:

> i used sprint for primary internet for a while.  Last few years I have
> Exede satellite feed.  it is about $100/mo for 15GB, and $10/G additional
> use,  Other plans are available.  It is pretty solid.  I'd still go for a
> wired feed to keep costs down. (No DSL or cable available)
>
> On Sat, Oct 17, 2015 at 3:20 PM, Dave Cole <linuxcncro...@gmail.com>
> wrote:
>
>>
>> I need a fast connection as we want to be able to do remote video and
>> also do debugging of the PLC control remotely via the comm link with the
>> help of a remote video camera.
>>
>> One problem that I am having is that Sprint wants to control what device
>> I use.   They literally offer one device at a time and the last one was
>> a 4G router that only supports VPN Passthrough even though they were
>> "sure" that it would support a site to site VPN connection.
>> I don't want to have two remote routers or boxes in the cabinet. Cost is
>> not a problem.   The Netgear 6100D I have used is $200 and that is
>> considered very cheap.  $600 would not be out of line if it can do what
>> we want and has a fairly wide temperature range. This device will be in
>> a box mounted outside.
>>
>> I can't use OpenVPN because there is no PC or server at the remote site.
>>
>> A GSM solution with AT would be ideal if they have sufficient coverage
>> since swapping out the 4G router would only require swapping the SIM
>> card instead of going through the ridiculous device activation routine
>> that Sprint and Verizon requires.
>>
>> I think that AT will be my next call.  I've pretty much run out of
>> patience with Sprint.
>>
>> Thanks,
>>
>> Dave
>>
>> On 10/16/2015 11:50 PM, Tom Easterday wrote:
>> > You didn't say what kind of throughput you need nor what your budget is
>> but one option is something like a Cisco RV320 on each end with 4G modems
>> attached.  You can see a review of the router here:
>> >
>> >
>> http://www.smallnetbuilder.com/lanwan/lanwan-reviews/32317-cisco-rv320-dual-gigabit-wan-vpn-router-reviewed?limitstart=0
>> >
>> > There is also a you tube video on configuring the modem:
>> http://youtu.be/RXerRGEZFEI
>> >
>> > I recommended the RV180 for a friend's business that needed sts vpn
>> (over public internet, not over cellular) and it worked well for him and he
>> said it was easy for them to set up and use.
>> >
>> > There are of course other more diy setups using cell phones with
>> tethering and using OpenVPN or such on your own processors.  But you have
>> to be careful as carriers may try to limit or block always on use of
>> tethering and data plans may not fit your requirements.  Or you get some
>> cellular wifi hotspots and use them with OpenVPN.
>> > See:
>> >
>> http://www.smallnetbuilder.com/other/security/security-howto/30353-how-to-set-up-a-site-to-site-vpn-with-openvpn
>> >
>> >> On Oct 16, 2015, at 3:08 PM, Dave Cole <linuxcncro...@gmail.com>
>> wrote:
>> >>
>> >> Key points - need help with a data cell phone connection to remote
>> >> equipment via a VPN.
>> >>
>> >> Guys,
>> >>
>> >> I'm working with some remotely located equipment and I need to
>> establish
>> >> a comm link to it.
>> >>
>> >> We have decided to go with a cell phone data connection.   We want to
>> be
>> >> able to remotely access this equipment via a "site to site" VPN.
>> >> This is different than a client/server VPN connection that people
>> >> oftentimes use to connect back to corporate headquarters for email,
>> file
>> >> sharing etc.
>> >>
>> >> The remote equipment is ethernet based but it is not a generic PC, it's
>> >> a PLC.   So I need the remote cell phone modem/router to do all of the
>> >> work of encrypting the data, establishing the VPN tunnel, etc.  It
>> needs
>> >> to be a VPN Router with a 4G modem built in that supports a "site to
>> >> site connection" and not just be a Router with VPN passthrough.
>> 

Re: [Emc-users] [Emc-developers] Off topic question - Need help with remote cell phone data connection via site to site VPN

[Jack Coats]

i used sprint for primary internet for a while.  Last few years I have
Exede satellite feed.  it is about $100/mo for 15GB, and $10/G additional
use,  Other plans are available.  It is pretty solid.  I'd still go for a
wired feed to keep costs down. (No DSL or cable available)

On Sat, Oct 17, 2015 at 3:20 PM, Dave Cole  wrote:

>
> I need a fast connection as we want to be able to do remote video and
> also do debugging of the PLC control remotely via the comm link with the
> help of a remote video camera.
>
> One problem that I am having is that Sprint wants to control what device
> I use.   They literally offer one device at a time and the last one was
> a 4G router that only supports VPN Passthrough even though they were
> "sure" that it would support a site to site VPN connection.
> I don't want to have two remote routers or boxes in the cabinet. Cost is
> not a problem.   The Netgear 6100D I have used is $200 and that is
> considered very cheap.  $600 would not be out of line if it can do what
> we want and has a fairly wide temperature range. This device will be in
> a box mounted outside.
>
> I can't use OpenVPN because there is no PC or server at the remote site.
>
> A GSM solution with AT would be ideal if they have sufficient coverage
> since swapping out the 4G router would only require swapping the SIM
> card instead of going through the ridiculous device activation routine
> that Sprint and Verizon requires.
>
> I think that AT will be my next call.  I've pretty much run out of
> patience with Sprint.
>
> Thanks,
>
> Dave
>
> On 10/16/2015 11:50 PM, Tom Easterday wrote:
> > You didn't say what kind of throughput you need nor what your budget is
> but one option is something like a Cisco RV320 on each end with 4G modems
> attached.  You can see a review of the router here:
> >
> >
> http://www.smallnetbuilder.com/lanwan/lanwan-reviews/32317-cisco-rv320-dual-gigabit-wan-vpn-router-reviewed?limitstart=0
> >
> > There is also a you tube video on configuring the modem:
> http://youtu.be/RXerRGEZFEI
> >
> > I recommended the RV180 for a friend's business that needed sts vpn
> (over public internet, not over cellular) and it worked well for him and he
> said it was easy for them to set up and use.
> >
> > There are of course other more diy setups using cell phones with
> tethering and using OpenVPN or such on your own processors.  But you have
> to be careful as carriers may try to limit or block always on use of
> tethering and data plans may not fit your requirements.  Or you get some
> cellular wifi hotspots and use them with OpenVPN.
> > See:
> >
> http://www.smallnetbuilder.com/other/security/security-howto/30353-how-to-set-up-a-site-to-site-vpn-with-openvpn
> >
> >> On Oct 16, 2015, at 3:08 PM, Dave Cole  wrote:
> >>
> >> Key points - need help with a data cell phone connection to remote
> >> equipment via a VPN.
> >>
> >> Guys,
> >>
> >> I'm working with some remotely located equipment and I need to establish
> >> a comm link to it.
> >>
> >> We have decided to go with a cell phone data connection.   We want to be
> >> able to remotely access this equipment via a "site to site" VPN.
> >> This is different than a client/server VPN connection that people
> >> oftentimes use to connect back to corporate headquarters for email, file
> >> sharing etc.
> >>
> >> The remote equipment is ethernet based but it is not a generic PC, it's
> >> a PLC.   So I need the remote cell phone modem/router to do all of the
> >> work of encrypting the data, establishing the VPN tunnel, etc.  It needs
> >> to be a VPN Router with a 4G modem built in that supports a "site to
> >> site connection" and not just be a Router with VPN passthrough.
> >>
> >> Sprint sells a Netgear 6100D 4G router that is suppose to do this. I
> >> bought it and then Sprint told me that they will not support remote
> >> access on this device!
> >>
> >> Does anyone have any experience in doing this?   I've been talking to
> >> "experts" at Sprint and they want me to use a Sprint approved 4G
> >> cell/router that only supports VPN pass through after I have told them
> >> over and over that I need to do a site to site VPN with their 4G router
> >> acting as a VPN endpoint.
> >>
> >> Sadly, they don't understand the requirements.
> >>
> >> Ironically, TP Link sells a "wired" VPN router for about $60 that does
> >> what I need, so I could "stack" routers to do what I need, but I really
> >> don't want to have two routers in the remote control box.
> >>
> >> There are some really brilliant people on this list so I am hoping that
> >> someone can give me some advice/direction etc.
> >>
> >> Thank You!
> >>
> >> Dave
> >>
> >> ---
> >> This email has been checked for viruses by Avast antivirus software.
> >> https://www.avast.com/antivirus
> >>
> >>
> >>
> --
> >> ___
> >> 

[Emc-users] Rookie question - what to get to run LinCNC easily/inexpensively

[Jack Coats]

What is a good and usable configuration for a machine to drive my beginner
3-axis CNC router?

Is Raspberry Pi or BeagleBone Black an easy solution, or would getting an
old desktop still a more bullet proof (and easy to implement) solution?

Thanks for your time!
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Re: [Emc-users] Yaskawa

[Jack Coats]

Thinking a bit more, I see no reason that any drag knife software couldn't
be used.  If you use rectangular based cuts only, and you handle dong
breaks manually, it should be easily doable.

Cutting rounded or serpentine cuts are had due to the breaking methods that
need to be used.  Machines that will do automated breaking after scoring
are pricy, but if it is pretty much all you do and you do a lot of it, even
those can be cost effective.

A quick Google shows there are several other software and machines other
than DeMichele out there.  I didn't see any open software, but it could
still exist.


On Tue, Sep 29, 2015 at 4:51 PM, Jack Coats <j...@coats.org> wrote:

> Years ago I worked for DeMichele Systems in College Station, TX.  They are
> now DeMichele Systems in Mesa AZ.
> Their specialty was optimized cutting for the Flat Glass industry.  Back
> 'in the day' it was Fortran programs that ran on Cromemco Z80 systems, but
> that is ancient history.
>
> Their software was pricey back then, and if it is like it was then, it is
> good, but they charge a lot for it.  Before this software cutting was laid
> out by hand.  Good manual layout got about 80 to 85% yield.  They
> guaranteed 90% but we really saw 95 to 98% yield in optimum conditions
> (correct stock, orders that matched up nicely, etc).  It also took care
> with tong-long and tong-short tempering for tempered glass (the glass is
> cut before tempering, so it expands more depending on the direction it is
> hung in the tempering ovens ... but that was the tech of the day.  I have
> no clue what they do now.
>
> I don't know of any open software, but it might be out there.  There might
> be competitor software, but I have no real knowledge other than keeping up
> a little bit with an old employer. (I have no current ties to them other
> than a little emotional one.)
>
>


-- 
><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." - Admiral
Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I learn." -
Ben Franklin
--
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Re: [Emc-users] Yaskawa

[Jack Coats]

Years ago I worked for DeMichele Systems in College Station, TX.  They are
now DeMichele Systems in Mesa AZ.
Their specialty was optimized cutting for the Flat Glass industry.  Back
'in the day' it was Fortran programs that ran on Cromemco Z80 systems, but
that is ancient history.

Their software was pricey back then, and if it is like it was then, it is
good, but they charge a lot for it.  Before this software cutting was laid
out by hand.  Good manual layout got about 80 to 85% yield.  They
guaranteed 90% but we really saw 95 to 98% yield in optimum conditions
(correct stock, orders that matched up nicely, etc).  It also took care
with tong-long and tong-short tempering for tempered glass (the glass is
cut before tempering, so it expands more depending on the direction it is
hung in the tempering ovens ... but that was the tech of the day.  I have
no clue what they do now.

I don't know of any open software, but it might be out there.  There might
be competitor software, but I have no real knowledge other than keeping up
a little bit with an old employer. (I have no current ties to them other
than a little emotional one.)
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Re: [Emc-users] CAD/CAM for LinuxCNC

[Jack Coats]

My fuzzy crystal ball says eventually we will get small cheap controllers
for CNC.  Similar to the ones used on 3D printers.  We could download with
USB or use ethernet to download, even SDcards or usb keyfobs, but the small
controllers are used locally to manage the hardware (start/stop/jog,etc)
and run the GCode engine to drive the machine.

Shopbot has done this, but their controllers are not small or inexpensive,
and they really want you to purchase the whole rig as a single unit from
them.

This will allow you to design/build elsewhere (desktop, laptop, tablet,
cloud, download design from a 'store' - thingivese.com like), and just have
a 'run it here' model if that is your desire.  Even the Easel kind of
design software (instructables.com cloud tool, that can send designs
directly to a desktop light duty CNC machine).

This market doesn't change quickly, but it does change.  When we will see
this as the predominate mode, I don't know.

Years ago, working at one manufacturer, the design/drafting crew ran solid
works, and rendered lots of pretty images, but also code that was
downloaded to manufacturing machines directly (by the production staff, not
the designers!) from our datacenter.  All shop tools used shielded ethernet
(in conduit due to the environment) for machine communication and
monitoring.  Even they were going in the direction I suggest above for
smaller installations, but they had the budget and were doing it to
save/make big bucks.  If it didn't increase safety, reduce manpower,
decrease overall design/manufacturing time, lower inventory and sell
just-in-time manufactured components, all focused on increasing long term
profit they didn't do it. -- This tells me we will see this concept
'trickle down' over time as we upgrade how we do things in all our shops.
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Re: [Emc-users] CAD/CAM for LinuxCNC

[Jack Coats]

I do like the idea of being architecture agnostic.

My only issue with ANY cloud service provider, is you are just buying
time/service on their computers.

Remember Cloud just means: Someone elses computer.

There is nothing magic or solid about them if your network connection (or
theirs) goes out, or if their business gets shut down.
At least with license on your computer, you can still run if they are
hacked or you don't have connectivity.

... I'm pretty sensitive to that as I can only get satellite internet
connection that is tinuous.  No cable or DSL or WISP available.



On Fri, Sep 18, 2015 at 7:30 PM, jrmitchellj . 
wrote:

> Has anyone looked into OnShape? (since it seems to be OS agnostic)
>
> Ray M
>
> --J. Ray Mitchell Jr.
> jrmitche...@gmail.com
> (818)324-7573
>
>
> The dogmas of the quiet past, are inadequate to the stormy present. The
> occasion is piled high with difficulty, and we must rise with the occasion.
> As our case is new, so we must think anew and act anew. We must disenthrall
> ourselves, and then we shall save our country.*Abraham Lincoln
> *, *Annual message
> to Congress, December 1, 1862*
> *16th president of US (1809 - 1865)*
>
> On Fri, Sep 18, 2015 at 5:18 PM, Drew Rogge  wrote:
>
> > I'm not sure how many Tormach machines are out there but hopefully
> Tormach
> > going with linuxcnc and therefore linux may encourage companies like
> > Autodesk to support linux better. Of course they could look at the linux
> > box just being a machine controller and all cad/cam work occurs on other
> > operating systems.
> >
> > On 9/18/15 4:22 PM, Dave Cole wrote:
> > > I'm sure it was not a happy day for the Artsoft Team when Tormach went
> > to a LinuxCNC/Machinekit solution.
> >
> > --
> > Drew Rogge
> > d...@dasrogges.com
> >
> > Phone: 8934OOO629OO4829631OOO
> >
> >
> >
> >
> --
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
> --
> ___
> Emc-users mailing list
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>



-- 
><> ... Jack

The Four Boxes of Liberty - "There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order."
"Whatever you do, work at it with all your heart"... Colossians 3:23
"Anyone who has never made a mistake, has never tried anything new." -
Albert Einstein
"You don't manage people; you manage things. You lead people." - Admiral
Grace Hopper, USN
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Ben Franklin
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Re: [Emc-users] CAD/CAM for LinuxCNC

[Jack Coats]

I went to a conference back before Oracle ran on Linux and ran on an Oracle
admin/developer.  He said he had been running Oracle on his desktop
(remember those?  right? ... well this was in the last millennium).  He had
been running oracle on his machine for personal hacking on it for over a
year.  It was a marketing decision (at that time Linux was not considered
"Data Center Worthy"(tm).  He said he didn't need to fix anything or even
change libraries, it just compiled and ran without a hitch.

I am sure marketing decisions included bringing support and sales folks 'up
to speed', not an insignificant investment, but the NIH/Data Center Worth
issues were more of a blocking factor for that product.

I am sure other products are similar in nature.

...

Talking to the creator of CamBam way back when.  He basically wrote it for
Windows.  Converting to Linux was non-trivial, where going the other way
seems to be easier.  CamBam is basically a one man band.  I have nothing
against small developers, but as a customer, I assume some risks that
aren't there with many larger concerns.  Oracle/IBM/M$/etc won't close the
doors in one quarter if the balance sheet or health of the proprietor can
if business goes sideways.  Most won't but it is still a risk to consider.
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Re: [Emc-users] mailing list vs forum

[Jack Coats]

I use both.  Forums occasionally, mainly when I am researching a specific
set of topics, but the mail list is
better day to day.

To use a mail list effectively, staying engaged, at least reading, is
important.  Kind of it's own 'soap opera' format with continuing multiple
thread stories going on.  Forum's can be dealt with like sitcoms that have
little if any story line carryover, very episodic in nature.

At least that is the way I think of them, which is very little  ...

Learning for a newbie in a new field, for me takes emersion. ... Reading
forums to let newbies follow a project or problem from stem to stern seems
to be a good way to help them.  But it does take the investment on their
part of time to read LOTS of forums threads to start to gain insight on
what it takes and the types of issues that arise. ... But for CNC in
general, it has a pretty steep learning curve for someone without related
experience, and reading a LOT (and asking questions, even if they are not
the most insightful) is what it takes.  It also takes patience from more
experienced members (some older, many not) to get the newbies up to speed
for what they need.

Yep, forums and mailing list are different animals, even if they serve the
same community.
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Re: [Emc-users] Screen ratio Q

[Jack Coats]

Gene,

Go to the K Menu, then click on SYSTEM, then DESKTOP APPLET, and finally
KRANDRTRAY. It may also be called Screen Resize and Rotate.
When you click the KRandRTray icon (mine is different here - look for the
icon shown above), you will see a list of resolutions. You can apply any of
these resolutions immediately by just clicking on the one you want.

I found that from http://www.novell.com/coolsolutions/trench/16034.html

... I hope that Helps.
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Re: [Emc-users] Screen ratio Q

[Jack Coats]

It 'should' auto detect, but you might need to reset either in the monitor
or in your system values to display a 4x3.

Right now I am running Linux Mint as my daily desktop but it is a Ubuntu
derivative.  I go to settings - display - and can check the resolution (and
format 16:9 or 4:3) that I want to see.

Give it a shot and report back please.


On Wed, Jul 8, 2015 at 7:57 PM, Gene Heskett ghesk...@wdtv.com wrote:

 Greetings;

 I replaced the elderly tube monitor on the toy mill a year or more back,
 but the monitors today are 16/9 wide screens.

 Whats the procedure to make it reset for wide screen so that circles are
 round again, rather than obviously squat.

 Thanks.

 Cheers, Gene Heskett
 --
 There are four boxes to be used in defense of liberty:
  soap, ballot, jury, and ammo. Please use in that order.
 -Ed Howdershelt (Author)
 Genes Web page http://geneslinuxbox.net:6309/gene


 --
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 ... Jack

The Four Boxes of Liberty - There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order.
Whatever you do, work at it with all your heart... Colossians 3:23
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
Tell me and I forget. Teach me and I remember. Involve me and I learn. -
Ben Franklin
--
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Re: [Emc-users] Question on grease fitting, required clearance around for gun access?

[Jack Coats]

If in the USA, check W.W.Grainger at Grainger.com - not cheap but they have
'stuff'.
If you can't find it in the online catalog, call the nearest store and they
can help find it.

If you work for a big company, have a business card and they might be able
to get you the 'big company' discount, if the company does enough business
with them to get volume discounts (without reporting it to the company if
that is an issue).

Try
http://www.grainger.com/category/fittings/lubrication/ecatalog/N-9ik?redirect=grease+fitting
for a starter

On Fri, Jun 19, 2015 at 10:39 PM, Gene Heskett ghesk...@wdtv.com wrote:

 On Friday 19 June 2015 22:03:50 Jason Burton wrote:
  Maybe switch to needle style grease fittings?

 I thought of that, but when I hit napa looking for a box of those in
 metric thread, came up dry.  I think its probably a good idea, so the
 next time I'm in one of the other car parts stores here, I'll check
 again.
 
  Best,
  Jason
 
  On Fri, Jun 19, 2015 at 8:33 PM, Gene Heskett ghesk...@wdtv.com
 wrote:
   Greetings;
  
   In the process of doing some trial assemblies of the motor to screw
   adaptors, I noted that there was only perhaps a fraction of an mm of
   clearance at best on 2 sides of the zerk style fitting installed in
   the Y nut, so I backed that adaptor off the nut and made some more
   clearance, but I don't think I have enough yet.  Is there a cad
   drawing I can look at that shows how much is required in order to
   access it with a std, genuine Chinese imported for Merican usage,
   grease gun?  The type with the mini-cartridge that I keep 2 or so
   preloaded with either auto style, or lubriplate BB grades of grease.
For that push on, bend off connection, it will need nearly 1/8 of
   clearance all around the nipple. Or am I behind the state of the
   art, and there is now a miniature version of that which I could
   retrofit my hand pumped small guns with?
  
   Thanks.
  
   Cheers, Gene Heskett
   --
   There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order.
   -Ed Howdershelt (Author)
   Genes Web page http://geneslinuxbox.net:6309/gene
  
  
   
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 Cheers, Gene Heskett
 --
 There are four boxes to be used in defense of liberty:
  soap, ballot, jury, and ammo. Please use in that order.
 -Ed Howdershelt (Author)
 Genes Web page http://geneslinuxbox.net:6309/gene


 --
 ___
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-- 
 ... Jack

The Four Boxes of Liberty - There are four boxes to be used in the defense
of liberty: soap, ballot, jury and ammo. Please use in that order.
Whatever you do, work at it with all your heart... Colossians 3:23
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
Tell me and I forget. Teach me and I remember. Involve me and I learn. -
Ben Franklin
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Re: [Emc-users] Suitable transformers = hens teeth

[Jack Coats]

Yes Gene, there is no santa clause, especially when you are talking
about copper.  Just as a raw material it is pretty pricy.

In the past I just got a couple of matched transformers 120VAC to whatever,
and put the secondaries together.
It makes a good isolation transformer when set up back to back.

Good transformers are never cheap.



On Fri, Jun 12, 2015 at 6:09 PM, Gene Heskett ghesk...@wdtv.com wrote:

 Hi all;

 In laying out how I am going to cnc this GO704, its apparent that the scr
 or triac board it comes with to control a motor of undetermined power,
 rated variously as 750 watts, 1kw, or needing 12 amps from the line.
 None of which groks, but welcome to chinese specs seems to be the
 operative response. :)

 Anyway, since Jon's pwm servo amplifier worked so well on my lathe, and
 its theoretically capable of that sort of power (20 amps at 160 volts
 IAACS), my mind is made up to use it again.  But its I/O is not all
 isolated so it must have an isolated power supply.

 But 1kw and up isolation cans are both scarce, and north of a $100 bill
 pricy at least on fleabay.

 Has anyone got something laying around getting dusty that could serve as
 a 120 to 120, or 240 - 120 isolation, and that you might be able to
 part with?  I have 240 just 7 feet away from where I have it parked so a
 stepdown would work just as well and would help balance the load.

 Send me PM's with what it is  how much you'd need and lets see if we can
 deal?

 Thanks.

 Cheers, Gene Heskett
 --
 There are four boxes to be used in defense of liberty:
  soap, ballot, jury, and ammo. Please use in that order.
 -Ed Howdershelt (Author)
 Genes Web page http://geneslinuxbox.net:6309/gene


 --
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-- 
 ... Jack

Whatever you do, work at it with all your heart... Colossians 3:23
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
Tell me and I forget. Teach me and I remember. Involve me and I learn. -
Ben Franklin
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[Emc-users] Thoughts on using the Intel Compute Stick, Linux versions?

[Jack Coats]

Just curious, any ideas about the viability of the Linux version of the
Intel Compute Stick use for CNC?
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Re: [Emc-users] Debian Wireless Setup

[Jack Coats]

I know wireless is convenient, but if you can, consider running hard wired
connection to your machine(s).  If you have multiple machines, run one hard
wire run to the shop, and put a wired hub (aka switch - yes there is a
technical difference, but that distinction is unimportant here) in the shop
to allow connecting more than one device.
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Re: [Emc-users] Cnc routers

[Jack Coats]

If you want to build something in that range, but have a larger and pretty
rigid rig, consider Mechmate.com ... It is a real DIY project, normally
uses NEMA 32 motors, but if you have some good 24's might work.  Still
check out their forums.  Plans cost $100, normal build costs for everything
go anywhere from $3K to $8 or 10K USD, depending on what you have and
accountability in your area.  Most folks build a 48x96 nominal cutting
area machines that are about 6' wide and 10' long (again very rough
dimensions).  Some have been built much larger and some smaller.  Critical
parts that are laser cut and bent can be purchased from a single source.
Sources for all techie stuff is available on the forums, but it is your
build so use what you want (please don't cheap out, you get what you pay
for in the long run, IMHO anyway).  You will have to source steel locally
and weld (easy welding, mainly rookie welders building these so it does not
have to be 'pretty' welds).


On Mon, Apr 20, 2015 at 5:04 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

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Whatever you do, work at it with all your heart... Colossians 3:23
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
Tell me and I forget. Teach me and I remember. Involve me and I learn. -
Ben Franklin
--
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Re: [Emc-users] New Debian install does not include Gedit

[Jack Coats]

Editors are a religious issue.  (just google vi vs emacs and read a few
flame wars - I'm in the vi camp myself ;-) )

Use whatever floats your boat and works the way YOU want to work.  Editors
are used so much that you should get to know your preferred editor
'intimately' enough so you don't fumble with commands and you are
comfortable at using it yourself and you feel productive.


On Wed, Apr 1, 2015 at 7:47 AM, John Thornton bjt...@gmail.com wrote:

 I thought Nano was the preferred text editor for EMC...

 On 4/1/2015 4:30 AM, Belli Button wrote:
  New Debian install CD does not include Gedit (even though it's the
 preferred
  LCNC editor)?
 
  Bellisimo
 
 
 
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Whatever you do, work at it with all your heart... Colossians 3:23
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
Tell me and I forget. Teach me and I remember. Involve me and I learn. -
Ben Franklin
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Re: [Emc-users] Linux Program for Wiring Diagrams

[Jack Coats]

If it is visio type drawing, google applications has similar things.
Google Drawing is out there
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Re: [Emc-users] G edit and velocity

[Jack Coats]

ed was my preferred on CP/M in the day when I didn't have access to wordstar.
ed or edline on DOS was OK.
On Windows I prefer notepad++ (notepad-plus-plus.org), a free editor
that is really simple to use and does proper g-code highlighting.
On Unix/Linux I go to vi, yes there is a vi-vs-emacs cult war, but for
me, vi is simple and I can remember the subset of control commands
easily.  Unix/Linux has ed also, but I prefer vi's full character
screen.

The whole object is to use what is productive, easy for you, and
doesn't get in the way.  I tried to be able to use (1) what I have,
then (2) what I preferred.

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Re: [Emc-users] Coolant filtering

[Jack Coats]

Propylene Glycol is anhydrous (naturally without water), absorbs water even
from the air.  It holds more heat in a 50-50 mixture with water, but if you
are trying to keep all rust out, you want it in anhydrous (without water)
from.
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Re: [Emc-users] Will a Dell Optiplex 755 work for LCNC?

[Jack Coats]

I saw the 755 refurbed for sale on the WMT web site today.  It was pretty
cheap, if anyone is interested.  It is not in their stores.

On Sat, Nov 22, 2014 at 9:50 PM, Charles Buckley rijrun...@gmail.com
wrote:

 I use a 755. Had to tweak the latency, but that is not a problem for the
 sort of stuff I am doing with it.

 On Sat, Nov 22, 2014 at 2:32 PM, Jon Elson el...@pico-systems.com wrote:

  On 11/22/2014 01:52 AM, Gregg Eshelman wrote:
   I got it cheap, real cheap. Has 4 gig of PC5300 DDR2 and a Core 2
   Pentium 4. Also has a low profile PCIe x16 video card. It's small
 enough
   to be mounted inside the cavernous 1990 vintage control cabinet I
   stripped all the original electronics out of.
  
   Most importantly it has a parallel port to which I can connect a Pico
   universal stepper controller.
  
  
  Some of the last Optiplex machines had too much BIOS stuff
  in them, and that interfered
  with the RT performance.  You may have to tweak some of the
  BIOS settings and
  mess with LAPIC and other oddities.  But, try it with the
  live disk and do the latency
  test.  if that works well, then you are golden.  if not,
  some investigating online
  may turn up the setting to get good RT latency.
 
  I have a 650 here that gets the real time delay message
  every now and again.
  I use it for testing boards, not running a machine, so I
  don't worry about it.
 
  Jon
 
 
 
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Whatever you do, work at it with all your heart... Colossians 3:23
Anyone who has never made a mistake, has never tried anything new. -
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Re: [Emc-users] Off Topic: Shop Lighting

[Jack Coats]

The only thing that makes changing technologies (or bulbs) economic is
if there is a real gain.  If you are hitting a burned out bulb, and
you WANT to change, AND you don't have any more of the old bulbs in
the cupboard, then changing tech seems reasonable.  Just because CFL
is more efficient, but I have a 140V incandescent in a hard to reach
place on a 120V circuit, it isn't likely to burn out.  But if I have
to, it will become a 'high reliability' CFL or LED (depending on the
tech available at the time).

If I must also pay for replacing the fixtures (going from screw in
bulbs to bulbs with a different mount) then economics makes pay back
even harder to justify.

But if SWMBO 'thinks it would look better', economics be damned, that
sucker is gone, and whatever boondoggle she likes goes where she
wants. grin

The economics of keeping a spouse happy outweighs money and
environmental savings any day.

In my 'workspace'.  Safety, my 'want to', then economics and
environment (however I weigh their needs that day), drive the
need/desire/probability of change.

When I was consulting, most larger decisions was made with spread
sheets.  Comparing options, and doing weightings for (depending on the
project), desirability (technological, artistic, usability, plain
'want to do it' factor, etc), economics ($$ outlay, $$ sunk cost, $$
additional cost, continuing running costs), effort involved
(man-hours), lifetime (in time), lifetime cost analysis (soup to nuts,
costs from acquisition, installation, retrofit, operational $$,
retirement and disposal cost at end-of-life), lifetime costs
$$/lifetime(in time)== $$/time.

I typically came up with 3 options (after evaluating more), and gave
those to the customer/bosses/clients/whatever to choose from the 3 (or
other small subset of the entire universe evaluated).

In our personal life, we try to do the best lifetime cost.  But that
doesn't out strip some projects we do because we 'want to' anyway.

We put passive solar water heating (no pumps or automatic valves
involved) on our house in the Carter years.  We knew that its lifetime
cost would be a wash ($0 overall gain to our pocket, even after govt
'stimulus' -- it was the Carter years and they gave solar anything
some good grants).  But we did it because of the want too, and
figuring it wouldn't really cost us anything.

We did a post mortum after they were removed years later.  They broke
even economically.  They brought in enough energy to offset the future
value of invested money.  Still we were in an 'all electric' house
built in the '70s, in the sunbelt.  If we had natural gas available,
it would have made no sense. (BTW, it was removed because the
galvanized pipe they used started leaking at joint with the stainless
steel tank inside the plastic dome on the roof.  It was removed when
we had the 30 year roof replaced after 15 years (normal roof life in
the sun belt - Houston area).

Still it kept down our electric water heater bills.  The thing lasted
as long as we suspected and used in calculations, but not as long as
the door-to-door-sales-droid said - to no surprise to us.  We did our
own economic analysis that the salies-droid called 'voodoo math' to
our face.  And yes, he was almost thrown out on his ear at that point.
We told him to shut up and have some more coffee while we did
big-boy-economics (wife had just finished a class at work on doing
project lifecycle economic analysis.  ...  It is good to marry someone
smarter that I am! :) ).  The economics was a draw.  So we based it on
'want' not need.  The 'want' and 'cool factor' for both of us won out.
... Such is how decisions are done in our household.


On Sat, Nov 8, 2014 at 5:02 PM, John Kasunich jmkasun...@fastmail.fm wrote:
 Going even more off topic - these aren't particularly useful shop
 lights, but they are blindingly bright and incredibly cheap.
 100 Watts, 9000 lumens.
 They need heat sinking (I've used CPU fan/sink combos).

 http://www.ebay.com/itm/380515680644


 On Sat, Nov 8, 2014, at 05:06 PM, Tom Easterday wrote:
 Since this thread is heading down the path of DIY, and since I just ordered 
 some more of these for a lamp I am upgrading, I thought I would mention this 
 very useful LED module from Seoul Semiconductor which is powered directly 
 off 120/220V mains.  All that is required is a heat sink to mount it to and 
 Bob’s Your Uncle.
 http://www.seoulsemicon.com/en/html/application/application.asp?catecode=3011subcode=28
  
 http://www.seoulsemicon.com/en/html/application/application.asp?catecode=3011subcode=28
 This very bright one is going into my lamp:  
 http://www.seoulsemicon.com/_upload/Goods_Spec/SMJE-XV12W2P4(0).pdf 
 http://www.seoulsemicon.com/_upload/Goods_Spec/SMJE-XV12W2P4(0).pdf
 They can be found at Digi-key, Mouser and various other places.
 -Tom

  On Nov 8, 2014, at 4:33 PM, Jon Elson el...@pico-systems.com wrote:
 
  On 11/08/2014 11:29 AM, Dave Cole wrote:
  I wonder how long it takes to pay back the $75
  

Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Jack Coats]

Joe,

Your last request is what happens where you hit 'pause', e-stop is for
emergencies.  It should be used to keep from loosing a hand, or to
keep the equipment from tearing itself apart.  Pause is to stop in a
restartable manner.  The machine may have to finish a cut before it
can pause, but using e-stop means you are willing to lose the piece or
repair it if something is wrong.

I hope that helps.

... Jack


On Fri, Nov 7, 2014 at 3:35 PM, Joe Hildreth
j...@threerivershospital.com wrote:
 Bruce,

 One more question.  If I wired it like my last email, then LinuxCNC would not 
 have any clue that I hit the external E-Stop.  Would it be benifitial to 
 bring the signal back in anyway, just to let the software know we killed it 
 externally?  Otherwise, I imagine that the software will continue to send 
 motion information and continue to plot like nothing ever happened.

 Thanks,

 Joe

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Whatever you do, work at it with all your heart... Colossians 3:23
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. -
Admiral Grace Hopper, USN
Tell me and I forget. Teach me and I remember. Involve me and I
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Re: [Emc-users] How to Migrate from Mach3 to LinuxCNC

[Jack Coats]

I agree.

If you have problems with Mach, for whatever reasons, LinuxCNC is a
great, low cost, experiment before tossing more money at it.

If you are an experimenter at heart, having BOTH is a good idea.  Most
of us are not in that position.  LinuxCNC seems to scale from big
hardware to small desktop (or smaller, or larger depending on your
needs).

G/M-code support can be done on minimal machines to anything bigger.
(There are DOS, RaspberryPi, and arduino implementations of
interpreters.)  Once you get to desktop size machines or larger it
takes to run LinuxCNC or Mach much more can be done in the way of
trajectory planning, etc.

For the cost for most of our machines, the incremental price of Mach
with Windows is real but not 'significant' compared to what it takes
for us to build and run our machines.  Still, I would rather spend the
money elsewhere if possible.

I do see WHY some go to Mach.  They don't know or trust 'free
software'.  An irrational fear, but real.  So they would rather buy a
solution they 'can get support for' rather than having to get involved
in a community to know how to obtain real good, fast support.  So if
they feel their time is better spent by spending money rather than
investing in themselves, their education and giving back, it is their
choice to make.  There are many that do.  They vote that way with
their pocket book.

Full disclosure:
Growing up in the computing industry, I started as an anti-M$ geek
from Bill Gates 'Open Letter to Hobbyists' days (
http://en.wikipedia.org/wiki/Open_Letter_to_Hobbyists ).  That is not
a good reason not to use it if M$ based tools are the best for the
job, but that is where my attitude / perspective started and has only
been supported by M$ adversarial actions toward their customer base
ever since.  Realistically, I use M$ products, mainly because my wife
(and her employer) has a warm and fuzzy about using them, and from the
'if mamma ain't happy, nobody is happy' camp, it isn't worth the
battle.  Even if non-M$ is a better technical solution, IMHO.  --
BTW, I have been using Linux since kernel 0.97, so I have stuck with
it for a while.

On Sun, Oct 19, 2014 at 2:37 PM, Dave Cole linuxcncro...@gmail.com wrote:
 On 10/19/2014 3:19 PM, andy pugh wrote:
 On 19 October 2014 01:52, Jack Coats j...@coats.org wrote:
 There is an article in Digital Machinist, Vol 9 No 3, Fall 2014 with the 
 title
 Migrating from Mach3 to LinuxCNC by Thomas Allsup (page 24).
 I wonder why anyone would want to?
 By which I mean, if you have a working, paid for Mach3 installation
 running a machine and making parts, why would you throw it all up in
 the air to change to some different (and approximately equivalent)
 software?

 I would assume that he ran into some issues with Mach3 and decided to
 move to LinuxCNC.
 It is not difficult to find issues with Mach3 that are hard or
 impossibile to resolve.

 I was starting to feel bad for the Mach3 camp, then I saw that there are
 two other articles in the magazine that are about Mach3.

 Dave





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[Emc-users] How to Migrate from Mach3 to LinuxCNC

[Jack Coats]

There is an article in Digital Machinist, Vol 9 No 3, Fall 2014 with the title
Migrating from Mach3 to LinuxCNC by Thomas Allsup (page 24).

In case someone wants to check it out.  I haven't read it yet.

Just thought someone might be interested.

 ... Jack

Whatever you do, work at it with all your heart... Colossians 3:23
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. -
Admiral Grace Hopper, USN
Tell me and I forget. Teach me and I remember. Involve me and I
learn. - Ben Franklin

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Re: [Emc-users] Uncondiftional , Conditional Program Jumps .

[Jack Coats]

Understanding the history of where we came from is important to me to
have a framework to see how to go into the future.

The origins of the G-Code 'language' goes back to the use of paper
tape (that is what my Dad used 40+ years ago and it was well
established then).

Yes, G-code isn't modern or structured inherently, it is a linear
'language' due to the limits of the media of the day.  ( They used
Baudot 5 level paper tape for control in Dad's day.  They used a
communications teletype that was generally available in the day. )

If you want a 'new' machine control language, GO FOR IT.  Just don't
expect it to immediately displace G-Code en mass.

IMHO, glopping on OO or other 'better' language options/techniques
onto LinuxCNC, or G-Code in general, would just generate an
aberration.  It is better to DESIGN a better control language that is
inherently easy to learn, easy to use and extensible without having to
re-code the core.  It should generate 'good' and IMHO 'optimized' code
(the definition of optimum will depend on machine configuration!).

G-code is a good basis for a SIMPLE language (in todays terms) that
can be interpreted at run-time by simple controllers and don't need
large computers or control systems to drive them (we have all seen
arduino g-code interpreters -- that has very few extensions!).  LCNC
needs a larger machine for it's versatility, and MACH runs on a common
consumer OS and feels 'comfortable'.

We have for the most part gotten away from people coding g-code
directly (but it is still good to do some, IMHO, just so you know what
the machines are really doing for you!) for the most part.  It is
being used for generic machine control for not just mills and routers
but plotters and additive machines (think Makerbot and the ilk).

LinuxCNC still has the ladder logic emulator that is very powerful and
has been used for a LONG time in machine control of everything from
Traffic Lights to injection molding machines, to just about any
machine you can imagine.  It is still VERY strong in the machine
control industry.

Think of your new language and not just in YOUR use, but as general
for being a control systems language.



My fuzzy crystal ball also sees any 'new' control systems being able
to run as a consumer kiosk or 'maker appliance'.  Select from a design
in the 'cloud' or library, possibly change a parametric number or two,
and make the item.  Either using additive or subtractive technology,
allowing for colors and different materials to be 'controlled' when
making the items or parts of items.  The appliance could be as simple
as putting in a 'programming card' or pushing one of 4 buttons to 'see
it made in front of you' like the old kiosks at state fairs. (I seem
to remember plastic dinosaurs and airplanes being injection molded on
demand in some of these over grown vending machines, but I am sure it
is showing my age).

Even with a quickly biodegradable polymer, to make new plates, cups,
eating utensils for every meal that are not environmentally bad and
have a open air half life of possibly 24 house or so, but are totally
stable for 8 hours. -- back to this discussion, that is a materials
issue and not a control systems issue like LCNC provides.

Enough of a diatribe. ... I hope this helps spark someone into action
rather than just murmuring among ourselves.

Others will have better visions.  If you do ... GO FOR IT!

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Re: [Emc-users] Uncondiftional , Conditional Program Jumps .

[Jack Coats]

IMHO, GOTOs aren't bad.  They are used poorly.  Most situations they
are not needed, but in languages without do-while or do-until type
loops, they do help.

I am not advocating use of GOTOs or similar technologies (one guy
suggested a 'COMEFROM' ... some tek ideas don't every fly).  But using
it just because you don't want to re-organize the program isn't a
reasonable excuse (trust me, writing it well will make maintenance
SOOO much easier in the long run, or even make portions reusable in
other programs).

OK, back in my hole. ... Pulling the rock back over it now.

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Re: [Emc-users] CNC Fest in Houston

[Jack Coats]

I think I saw Saturday 10/18 with a possibility of getting together
the evening of the 17th too.

What is the address?  Where are most folks staying?

On Wed, Oct 1, 2014 at 5:38 AM, John Thornton bjt...@gmail.com wrote:
 When is the fest?

 JT

 On 9/30/2014 11:51 PM, Jon Elson wrote:
 John,

 Are you going to the fest in Houston?  I am looking for
 another driver.
 My wife is dithering on going, and I am guessing she
 probably won't
 want to leave nobody keeping an eye on the kids for that long.

 It appears to be about 13 hours from St. Louis.  That's doable
 in one shot for two drivers, but way beyond my capacity for
 punishment all by myself.

 Jon

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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
- Henry J. Tillman
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. -
Admiral Grace Hopper, USN
a nanosecond is the time it takes electrons to propigate 11.8 inches
-  - http://youtu.be/JEpsKnWZrJ8
Life is complex: it has a real part and an imaginary part. - Martin Terma

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Re: [Emc-users] CNC Remote

[Jack Coats]

Thank you for the unobtrusive notice.  If you desire to remind us, at
most once per quarter or semi-annually is good, unless you are having
a 'sale' of course! :-)

On Tue, Sep 30, 2014 at 4:10 AM,  c...@matyfabrik.com wrote:
 Hi,

 We are a tiny french company working with CNC machines managed by …
 LinuxCNC of course ! ;-)
 For our internal needs, we developed an iOS app to be able to control
 basic LinuxCNC functions remotely from iPhones and iPads. Recently, We
 decided to make it available to others and it is now distributed on
 appStore. As this is not our core business, we sell it for the lowest
 possible price to give us the ability to make it evolve and to be
 reactive in bug corrections ($9.99 or 8€99 with lifetime updates
 included).
 Application is available in French and in English but, for the moment,
 the tutorial is only available in French (we work on an english
 translation).
 If you are interested, you can go to
 http://www.matyfabrik.com/cnc-remote-ios-linuxcnc/
 or if you want an automatically translated version :
 http://www.microsofttranslator.com/bv.aspx?ei=UTF-8fr=bf-badgea=http%3A%2F%2Fwww.matyfabrik.com%2Fcnc-remote-ios-linuxcnc%2Flp=fr_ensubmit=Traduite

 As we work a lot with free software and we did not want to pollute this
 list with commercial ads, we sent a first mail to EMC Board of Directors
 and they told us to send this mail to let you make your own opinion.

 If you use our software, do not hesitate to contact us for any issue or
 suggestion (via our website forms or directly via c...@matyfabrik.com).
 We always do our best to help you and to quickly correct bugs. This
 software is a way for us to give back something to LinuxCNC.

 We hope this software will be useful to some of you,

 Bye

 Mathieu

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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
- Henry J. Tillman
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. -
Admiral Grace Hopper, USN
a nanosecond is the time it takes electrons to propigate 11.8 inches
-  - http://youtu.be/JEpsKnWZrJ8
Life is complex: it has a real part and an imaginary part. - Martin Terma

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Re: [Emc-users] Printing on wall

[Jack Coats]

There are lots of hacks out there that allow using spray cans on a
roller that you can push or walk behind to do art on sidewalks or
grass.
There are 'ink' (think sharpie) wall printers that are basically pen plotters.

Here are links for both Raster and Vector printing projects:

http://hackaday.com/2006/04/26/old-pen-plotter-converted-to-vinyl-cutter/
http://www.instructables.com/id/X-Y-Plotter/
http://jason-webb.info/2012/05/wall-plotter-update-8-pulley-hack-first-prints-and-acquiring-better-parts-for-new-plotter/
http://www.instructables.com/id/DIY-BioPrinter/
http://makezine.com/2014/08/25/the-chalkjet-writing-machine/
http://hackaday.com/2011/09/12/inkjet-print-head-driver-shield/
http://hackaday.com/2009/03/24/nickel-o-matic/
http://hackaday.com/2011/09/12/inkjet-print-head-driver-shield/

When in college (ages ago) we used a large format (48x60 inch) X-Y pen
plotter with G-code drivers to do color plots.
These days anyone can build one for a couple of hundred bucks (that
one cost $100K in 1970 dollars).
The software is pretty simple, anyone could write a simple driver for
a RaspberryPi or Arduino without to much
difficulty (if they are any kind of a programmer).  Most of these are
vector printers similar to most CNC machines.

Inkjet style is a little more difficult to control is slightly more
difficult.  It takes getting the image desired
into raster format of the appropriate resolution for the printer (not
to hard, but takes resources).  Most
raster printers don't tend to do much buffering and don't change the
image (unless using a raster language
like PostScript or HPGL or similar - all which use considerable
additional resources over a simple printer).
Part of the difficulty is keeping the raster image in perspective
(aspect ratio, image density, etc).  Still,
nothing is insurmountable with a little ingenuity and hacking! ;-)  It
just may not be an out of the box
solution.

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Re: [Emc-users] Questio on nor's nand's

[Jack Coats]

In an old college class, they did a proof that it takes a nor or nand to
generate a 'complete logic system'.  Meaning you can build all the various
logic functions from either of those forms.  It is not possible to generate
them from and or or logic.  The inverter is the only thing that is needed
to complete the logic system.

Logically, with an xor, you can tie one of the inputs high, and it will
generate an inverted output of the other input.  Effectively using an xor
as an inverter.

I don't know how to implement it in LinuxCNC, but the digital logic allows
the option.


On Thu, Aug 14, 2014 at 7:15 PM, andy pugh bodge...@gmail.com wrote:

 On 15 August 2014 01:06, Gene Heskett ghesk...@wdtv.com wrote:


  In fact, I was wishing I had a 4 input and at one point today.

 You can use http://www.linuxcnc.org/docs/html/man/man9/logic.9.html to
 create a 4-input AND OR or XOR, but not the inverted version.

 It would seem like a trivial mod to add the inverted outputs. (to be
 honest I am not entirely sure why the function doesn't just supply all
 outputs, all the time.

 --
 atp
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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 -
Henry J. Tillman
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
a nanosecond is the time it takes electrons to propigate 11.8 inches - 
- http://youtu.be/JEpsKnWZrJ8
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Re: [Emc-users] 2nd part

[Jack Coats]

For a demo, getting a machine to just do it (even if it takes 'breaks' due
to excess temperatures) for a while, would be fantastic.  Just might need
'yet another sensor'.

Especially for demo, being able to run continuously is great but not
essential.  For proof of concept (or ability with 'limited' (no 3-phase)
power) is a great goal.  Document it and call it a feature! :-)

For those that MUST use 3-phase, I have used for computer operations
motor-generator sets, basically a single phase motor driving a 3-phase
generator.  A pretty high energy loss, but in my case, it allowed
generating 400Hz power for a mainframe.

I talked with a commercial CNC guy in my area, listening in the background
to his motor-generator set that he used for machine power.  He hated the
excess noise and power loss, but commercial 3 phase was not available where
he was.  But it did work well enough for him to be in business using it!
 So it can be done.
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Re: [Emc-users] A great goal - to make a interface for LiuxCNC to this stuff

[Jack Coats]

Hopefully, they are just trying to make a well defined, public, and easy
to use set of standards.  That is easy to document, implement, understand
(by less formally educated in the field), and use effectively and
efficiently.

All the things they are trying to bring together are well known methods and
processes.  But they SEEM to need to be re-build/re-designed/re-coded
with little re-use between implementations (except for general philosophy).

At least that is my current cut at it.
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[Emc-users] A great goal - to make a interface for LiuxCNC to this stuff

[Jack Coats]

http://youtu.be/hnDKqr-g3t4

Any ideas on how to implement this kind of thing?

I know it is more than I have the ability for, but it could be a fantastic
edition that allows
LinuxCNC to be even more useful to small businesses.

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Re: [Emc-users] A great goal - to make a interface for LiuxCNC to this stuff

[Jack Coats]

Thanks for all the replies.

It sounds like that this can be done by folks that know more than I do.
I am guessing, we may need an 'appropriate' interface (possibly something
like
lynx with some glue code) to read web posting from other machines and
be able to read those settings with an interface to HAL.

Another thing to take outputs from HAL and be able to post them on a
simple web server (possibly dynamic pages that query HAL settings or
variables upon request).

Ok all that is from not knowing much about HAL.  This is just a suggested
thumbnail of a design.  I am sure others can do much better!

I agree with Gene.  Thanks to all the talented folks that can and do support
LinuxCNC in every way!  We don't want to turn this into a attaboy session,
but I cannot deny they are well warranted!  So thank you, for all you have
done and will do.



On Sat, Jun 21, 2014 at 10:30 AM, Gene Heskett ghesk...@wdtv.com wrote:

 On Saturday 21 June 2014 09:44:36 Jack Coats did opine
 And Gene did reply:
  http://youtu.be/hnDKqr-g3t4
 
  Any ideas on how to implement this kind of thing?
 
  I know it is more than I have the ability for, but it could be a
  fantastic edition that allows
  LinuxCNC to be even more useful to small businesses.
 
   ... Jack

 I think so too Jack, but at the same time, with our ability to build
 custom Mwords, and carve up hal files, I would state that the limits of
 what LCNC can do right now, are far from being fully explored.  I can
 envision a row of machines, each doing a specific operation to work mount
 on a pallet, with nothing more than a tally signal to indicate state of
 each machine, busy or finished, that in turn tells the robot to unload
 that pallet, park it, and get another pallet and reload that particular
 machine.  Each machine would be running at its own best pace so the
 overall production would be limited by the slowest operation of course,
 but still, with say 5 or 6 machines in a row, it would outrun a human
 trying to keep up.

 That doesn't neutralize the fact that 99% of such setups are going to be
 one offs though.  And they will need someone familiar enough with that
 setup to reset/reprogram it for the next, different part.  It will also
 need, built into each machine, or into the robot, a means of servicing
 dull tooling.

 Code for an individual operation will tend to be made into reusable
 modules, perhaps even taking stored in memory, globally named values for
 how deep this hole is going to be, set by the master program.

 I don't think any of this is beyond what LCNC can do right now.  Obviously
 not thru the pin limited parport, but folks like PCW sell the stuff to
 blow that limit into the next drainage.

 I'm your old fart here, but every time I come across an operation that my
 toys can't do, I find its usually nothing more than a dozen or so more
 lines in the hal file to make it do it, G33.1 for instance on a lathe with
 a single quadrant spindle drive.  A few lines of hal to synthesize the
 stop missing from G33.1 when it turns around, a triplet of ice cube relays
 to rig up dynamic braking, staged in effect by 2 more relays from the
 instantly known spindle speed, and a loop of gcode running g33.1 with
 variable arguments each pass thru the loop, and I can put a 1/4 or 6mm
 tap, in a drill chuck mounted in a boring bar holder, and I can tap that
 hole an inch deep (or however long the tap is) without stressing the tap.
 I program it to pull the tap out far enough I have time to blow it clean
 and drop enough cutting oil on it for the next pass back in, usually going
 between 1/2 and 3/4 turn farther each time.

 The only problem with that I found while cutting air, is that if it hits
 the -z limit set in the .ini file, a g33.1 comes uncoupled at the limit,
 the carriage stops moving until the spindle has completed the reverse and
 the phantom Z comes back past that limit, at which point the carriage
 resumes tracking the rigid tapping motion for the back out move.  Found by
 cutting air so no broken tap (yet).

 Thats why, at nearly 300 LOC, my hal file for a puny little 7x12 seems to
 be the longest hal file extant here. But it works.

 I won't say its unlimited, but we have NOT fully explored what it can do
 right now.

 We certainly have no shortage of talented people here who CAN do this
 stuff.  And I thank them for these tools every time I open the shop door.
 But not loud enough I fear.  Thank you all.

 Cheers, Gene Heskett
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Re: [Emc-users] BBB cape available

[Jack Coats]

A cape is an add-on board for electronics of various types for a Beagle
Board (and Black).

Similar to the Arduino Shields.  RaspberryPi doesn't use cute terms like
this, but the concept of cape or shield is easy to communicate and it
easier to communicat than add-on board, or external interface, at least
among the initiated.


On Fri, Jun 20, 2014 at 9:50 AM, Roland Jollivet roland.jolli...@gmail.com
wrote:

 Why is it called a cape? Is it, as in a cloak?

 Roland


 On 2 December 2013 00:00, Alex Joni alex.j...@robcon.ro wrote:

  I finally got a bit of round tuit and managed to start delivering
  bbb_parport capes, along with some additional items [3][4].
  They are available here: http://webshop.juve.ro
 
  If you have any questions, drop me an email at alex AT joni D0t ro
 
  Some notes on the bbb_parport cape [1]:
  - these are capes designed to fit a BBB (Beaglebone Black) [2]
  - the pinout on the DB25 matches default LinuxCNC parport pinouts
  (stepper_mm, stepper_inch)
  - there are a couple versions of the cape, depending on the options
 needed
 
  Regards,
  Alex
 
  [1] -
 
 http://webshop.juve.ro/index.php?main_page=product_infocPath=1_2products_id=1
  [2] - http://beagleboard.org/Products/BeagleBone%20Black
  [3] - a case for bbb+cape:
 
 http://webshop.juve.ro/index.php?main_page=product_infocPath=1_3products_id=3
  [4] - I plan to include 4G SD cards with MachineKit in the near future
 
 
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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 -
Henry J. Tillman
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
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- http://youtu.be/JEpsKnWZrJ8
Life is complex: it has a real part and an imaginary part. - Martin Terma
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Re: [Emc-users] fest

[Jack Coats]

Make that a MeToo for what Bari said! :)

I'll probably drive from near Nashville TN if someone needs a lift.

On Fri, May 30, 2014 at 1:25 PM, Bari bari00...@gmail.com wrote:

 On 05/29/2014 08:16 PM, Chris Kelley wrote:
  How does the weekend of October 17th sound? I think that's enough time to
  plan and October is still fall in Houston.
 
 
 
 Where is your space? Will it start on Friday the 17th of October or
 Saturday the 18th morning? Is there easy and free parking? How far are
 you from Bush Intercontinental Airport? Any suggestions on where to stay
 or not to stay?


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 ... Jack

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 -
Henry J. Tillman
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
a nanosecond is the time it takes electrons to propigate 11.8 inches - 
- http://youtu.be/JEpsKnWZrJ8
Life is complex: it has a real part and an imaginary part. - Martin Terma
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Re: [Emc-users] fest

[Jack Coats]

Someone want to organize it?  Lots could be done, but having the personal
bandwidth and energy is another thing.


On Fri, May 30, 2014 at 3:57 PM, Stuart Stevenson stus...@gmail.com wrote:

 I never been to a weekend fest. Seems a little short to me.
 Is this just for Friday, Saturday and Sunday?



 On Fri, May 30, 2014 at 3:32 PM, Jack Coats j...@coats.org wrote:

  Make that a MeToo for what Bari said! :)
 
  I'll probably drive from near Nashville TN if someone needs a lift.
 
  On Fri, May 30, 2014 at 1:25 PM, Bari bari00...@gmail.com wrote:
 
   On 05/29/2014 08:16 PM, Chris Kelley wrote:
How does the weekend of October 17th sound? I think that's enough
 time
  to
plan and October is still fall in Houston.
   
   
   
   Where is your space? Will it start on Friday the 17th of October or
   Saturday the 18th morning? Is there easy and free parking? How far are
   you from Bush Intercontinental Airport? Any suggestions on where to
 stay
   or not to stay?
  
  
  
 
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   ... Jack
 
  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 -
  Henry J. Tillman
  Anyone who has never made a mistake, has never tried anything new. -
  Albert Einstein
  You don't manage people; you manage things. You lead people. - Admiral
  Grace Hopper, USN
  a nanosecond is the time it takes electrons to propigate 11.8 inches -
 
  - http://youtu.be/JEpsKnWZrJ8
  Life is complex: it has a real part and an imaginary part. - Martin
 Terma
 
 
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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 -
Henry J. Tillman
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
a nanosecond is the time it takes electrons to propigate 11.8 inches - 
- http://youtu.be/JEpsKnWZrJ8
Life is complex: it has a real part and an imaginary part. - Martin Terma
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Re: [Emc-users] Ubuntu versions?

[Jack Coats]

The quick answer is 'that's what works'.  A more technical answer is that
the libraries used that are needed for real-time-linux to work as needed
to drive your steppers properly work well with Ubuntu 10.  Also, for ease
of use, installing the 'live' image available for LCNC means you don't have
to handle doing the integration needed for the newer versions of the kernel.

In Linux, the kernel is the 'big deal' that drives much of the
compatibility between
versions.  The source for all the versions of Linux are freely available
for your
perusal and even modification.  Most of us, me included, loose interest at
the level
needed to tell the real differences on the machine level.

For LinuxCNC, our developers are volunteer, and they do a great job of
helping
address needs of the community.  I fully expect a new 'live' image to be
made
available at sometime with the newer kernel, but for now, the old one works
well, and good developers keep to the philosophy 'no release before its
time'.
Also, LCNC ONLY upgrades from Long term support version to the next
LTS version.  This is to keep down their work load and avoid 'kernel churn'
that
make for excessive not necessarily productive work.

If you really want to dig in there are many people that install the current
version
and build LCNC from source on a 'current kernel'.  They are more driven than
I am anymore.

I hope this explains on a reasonable level why LCNC live image isn't on a
more
recient distribution.

BTW, you can install a more recent version of Ubuntu, and set up to get the
appropriate repositories and install LCNC on a newer that Ubuntu 10 version.
I have done it, it isn't hard.  Just read, read, try, if it doesn't work,
read more,
before asking to many more questions.

We are here to help each other at the level each of us can.

Enjoy, and keep on CNC'in



On Sun, May 11, 2014 at 4:18 PM, rayj raymo...@frontiernet.net wrote:

 I'm in the process of setting up LCNC and I'll be using Ubuntu 10. I'm
 wondering why, once I have it setup, I would want to change to a newer
 version of Ubuntu?  Do the newer versions offer more functionality in
 LCNC?  What are the advantages of upgrading?  These questions are based
 on a setup with a computer dedicated to only running the machine with LCNC.

 TIA
 --
 Raymond Julian
 Kettle River, MN

 The things we admire in men, kindness and generosity, openness, honesty,
 understanding and feeling are the concomitants of failure in our system.
 And those traits we detest, sharpness, greed, acquisitiveness, meanness,
 egotism and self-interest are the traits of success. And while men
 admire the quality of the first they love the produce of the second.
 -John Steinbeck, novelist, Nobel laureate (1902-1968)


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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 -
Henry J. Tillman
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
You don't manage people; you manage things. You lead people. - Admiral
Grace Hopper, USN
a nanosecond is the time it takes electrons to propigate 11.8 inches - 
- http://youtu.be/JEpsKnWZrJ8
Life is complex: it has a real part and an imaginary part. - Martin Terma
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Re: [Emc-users] Ubuntu versions?

[Jack Coats]

Even running it after the support dies is no problem.
Just keep a copy of all the installation stuff (burn an extra copy or two
just to keep for safetys sake)
and keep running.

Like XP, if it isn't on a network, no reason to run it unless you are
wanting to
do something different than what it does now (for to fix stuff).

Bit rot happens (not as much on Linux as M$ products in my experience), so
a re-install occasionally (every 2 to 5 years) if something seems to be
going
amiss is not a bad thing.

Sorry if I got your current position on LCNC earlier wrong.  If it works,
no need to fix it :)


On Sun, May 11, 2014 at 6:42 PM, rayj raymo...@frontiernet.net wrote:

 I think you missed the point of my question.  Once I have LCNC set up
 and running, why would I want to change the version of Ubuntu and
 encounter the problems associated with that?  Is LCNC performance under
 a newer version of Ubuntu better?  I'm not typically an early adopter,
 and prefer to avoid the bleeding edge.  What would I be giving up if I
 ran LCNC on Ubuntu 10 until the support dies?

 Raymond Julian
 Kettle River, MN

 The things we admire in men, kindness and generosity, openness, honesty,
 understanding and feeling are the concomitants of failure in our system.
 And those traits we detest, sharpness, greed, acquisitiveness, meanness,
 egotism and self-interest are the traits of success. And while men
 admire the quality of the first they love the produce of the second.
 -John Steinbeck, novelist, Nobel laureate (1902-1968)

 On 05/11/2014 05:58 PM, Jack Coats wrote:
  The quick answer is 'that's what works'.  A more technical answer is that
  the libraries used that are needed for real-time-linux to work as needed
  to drive your steppers properly work well with Ubuntu 10.  Also, for ease
  of use, installing the 'live' image available for LCNC means you don't
 have
  to handle doing the integration needed for the newer versions of the
 kernel.
 
  In Linux, the kernel is the 'big deal' that drives much of the
  compatibility between
  versions.  The source for all the versions of Linux are freely available
  for your
  perusal and even modification.  Most of us, me included, loose interest
 at
  the level
  needed to tell the real differences on the machine level.
 
  For LinuxCNC, our developers are volunteer, and they do a great job of
  helping
  address needs of the community.  I fully expect a new 'live' image to be
  made
  available at sometime with the newer kernel, but for now, the old one
 works
  well, and good developers keep to the philosophy 'no release before its
  time'.
  Also, LCNC ONLY upgrades from Long term support version to the next
  LTS version.  This is to keep down their work load and avoid 'kernel
 churn'
  that
  make for excessive not necessarily productive work.
 
  If you really want to dig in there are many people that install the
 current
  version
  and build LCNC from source on a 'current kernel'.  They are more driven
 than
  I am anymore.
 
  I hope this explains on a reasonable level why LCNC live image isn't on a
  more
  recient distribution.
 
  BTW, you can install a more recent version of Ubuntu, and set up to get
 the
  appropriate repositories and install LCNC on a newer that Ubuntu 10
 version.
  I have done it, it isn't hard.  Just read, read, try, if it doesn't work,
  read more,
  before asking to many more questions.
 
  We are here to help each other at the level each of us can.
 
  Enjoy, and keep on CNC'in
 
 
 
  On Sun, May 11, 2014 at 4:18 PM, rayj raymo...@frontiernet.net wrote:
 
  I'm in the process of setting up LCNC and I'll be using Ubuntu 10. I'm
  wondering why, once I have it setup, I would want to change to a newer
  version of Ubuntu?  Do the newer versions offer more functionality in
  LCNC?  What are the advantages of upgrading?  These questions are based
  on a setup with a computer dedicated to only running the machine with
 LCNC.
 
  TIA
  --
  Raymond Julian
  Kettle River, MN
 
  The things we admire in men, kindness and generosity, openness, honesty,
  understanding and feeling are the concomitants of failure in our system.
  And those traits we detest, sharpness, greed, acquisitiveness, meanness,
  egotism and self-interest are the traits of success. And while men
  admire the quality of the first they love the produce of the second.
  -John Steinbeck, novelist, Nobel laureate (1902-1968)
 
 
 
 --
  Is your legacy SCM system holding you back? Join Perforce May 7 to find
  out:
  #149; 3 signs your SCM is hindering your productivity
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Re: [Emc-users] Toolchanges

[Jack Coats]

I would think that tool changing could be done by many means.  The
mechanical changing and securing is really the hard part.  As a friend once
told me: The rest is a simple matter for software (I never believed him
either)

I have tried to come up with a reasonably easy way to handle tool changing
over the years (faster than manual, cheaper than some of the big iron fully
automated ... a tool changer that costs as much or more than my cheap CNC
rig isn't going to cut it.

The best I have though of is one that would fully exchange routers or
spindles for another (already set up and calibrated.  Have the head go
place the head on a 'head rest', undo a motorized bolt (to unlatch the head
from the head carrier), move the head carrier to the back of another 'head'
and activate the 'motorized bolt' to latch the head in place (used with a
couple of metal and permanent alignment pins on the head and head carrier.
Then return to cutting.  A power source should also auto connect/disconnect
with the head/head carrier if doing it this way.  If using water cooled
spindle, it would be more of an issue, but for router or air-cooled
spindle, it might work (but even the air-cooled spindle has a warm up/cool
down cycle that should be observed).  So this would probably do best with
routers or marking devices.

Just some musing.
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Re: [Emc-users] Coordinate Transform to Level Workbed

[Jack Coats]

 On 8 December 2013 17:21, Charles Steinkuehler char...@steinkuehler.net
 wrote:

  I disagree. G-code works in idealized cartesian space, and the output
  should be idealized cartesian too.

 My understanding is that if you have a particular geometry of a CNC
machine is non-idealized cartesian, you use the kinematics to program the
transformations that will allow you to map the idealized cartesian space
onto your device. This has been done for hexapod platforms (aka Stewart
platforms) and I can't think of any platform that could be much more
'non-cartesian' than that!
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Re: [Emc-users] Linux question

[Jack Coats]

You might check bios settings.  For servers, I configure them to auto-boot
at power on and after any power failure (simulated by a power strip turn
off).
Desktops are normally configured to power down if they find they were on or
off when a power fails.

It does sound like the power control is doing this.  It is built into lots
of mother boards these days.

I doubt you can totally defeat it, but you could just 'turn it off' no
using a power strip, leaving a small amount of power being used by the
power control circuitry.  If I wante to use a power strip, I would just
live with it and not worry about it.

Being on rural circuits, I do have all electronics I want to 'keep' on
UPSes, not just surge protectors.  A lightening strike took out several
things and one of 3 UPSes in the house, but nothing plugged into any of the
UPSes.
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Re: [Emc-users] polyurethane resin casting

[Jack Coats]

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] just noticed on Hackaday --- new free 3D CAD program almost here

[Jack Coats]

I recognize 'asshole' as a specific technical term, but some have
their 'spelling' filter on high gain for this and similar terms.

We are adults here (whether we are or not) and have reasonable
vocabularies so we can find other terms.  If you are ever at a loss of
how to express yourself, find some of the historical Congressional
Records, our senators and congressmen have found the most eloquent
methods to convey the same thoughts, to the extent it takes 3 days
after leaving a meeting to realize someone call you the south end of a
north bound donkey.  Some of the ways they call each other names is
truly astounding and is source of great humor.

On Sun, Sep 15, 2013 at 3:45 PM, Marius Liebenberg
mar...@mastercut.co.za wrote:
 What did I spell wrong again?

 On 2013/09/15 10:18 PM, Belli Button wrote:
 Ahem,  language please.  ;-)

 -Original Message-
 From: Marius Liebenberg [mailto:mar...@mastercut.co.za]
 Sent: 15 September 2013 08:31 AM
 To: emc-users@lists.sourceforge.net
 Subject: Re: [Emc-users] just noticed on Hackaday --- new free 3D CAD
 program almost here


 On 2013/09/15 02:37 AM, Ron Bean wrote:
 DesignSpark Mechanical is not supported on virtual platforms.

 I don't know if is not supported means it won't work or just we
 don't care enough to test.
 I wondered if DesignSpark was cloud-based, just because all the recent
 closed-source freeware seems to be built on that model. Does anyone
 know if it will work without an internet connection? (I guess we'll
 find out on Monday.)


 It will work without a connection but that will be pointless as you draw
 libraries and new models from the net constantly. Especially in the early
 days where new models will be scarce.
 I have a machine that I do all my design work on and it is not connected to
 the internet for fear of destruction by delinquent assholes. It is connected
 to my network and then I have a laptop that is connected to the internet. On
 the laptop I get all the latest updates and then I run Syncback to update
 any libraries on the development machine.


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 Fax: +27 86 551 8029
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If you are not part of the solution, you are part of the precipitate
- Henry J. Tillman
Anyone who has never made a mistake, has never tried 

[Emc-users] Plasma Table

[Jack Coats]

Has anyone done a DIY plasma table, or have suggestions I could find
out about a DIY version?

I am a rookie and just learning, wanting to find out if it could be
practical for a hobby setup.

TIA, Jack

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Re: [Emc-users] Servo motor watts VS torque?

[Jack Coats]

From what I have been told, the Amps is the 'power', but more volts is the
'speed' and responsiveness component.

Watts is Volts times Amps, and is defined as 'power'.

The 'torque' would be more the 'amps' than power, but obviously they are
related.

Does that help?
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Re: [Emc-users] name of Linuxcnc mascot

[Jack Coats]

Anyone good at putting LINUX CNC where EMC is on Tux so we can get a new
'official logo'.  I am sure EMC Corp takes exception to this too.  Since
they seem to claim those initials even though they came from a US Federal
Govt project. (Yes, I still feel a bit bitter over the forced name change,
but I'll get over it in another couple of hundred years.)


On Mon, Sep 2, 2013 at 6:08 AM, Sven Wesley svenne.d...@gmail.com wrote:

 2013/9/2 andy pugh bodge...@gmail.com

  On 2 September 2013 11:47, John Thornton bjt...@gmail.com wrote:
   A google search for emc mascot came up with the correct answer in an
  image.
 
  I am wondering if the question is too hard. Even knowing the answer I
  couldn't find it on the site.
 
  On a related note, I find myself occasionally wishing for a lathe
  version of the icon, to differentiate setups.
 
 
 Old and wrong name, time to make a new one I think.

 /S

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Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein
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Grace Hopper, USN
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Re: [Emc-users] who emc-users

[Jack Coats]

Read old archives of the mailing list.  But I tend to not be able to
find much unless I am VERY specific.

When you ask questions, the more you can narrow down what you are
looking for the easier and faster we can help you.

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Re: [Emc-users] Controlling a tool changer

[Jack Coats]

At one time I saw images of the Shopbot tool change system.  It was
basically a tool tray/holder down one side/end and the spindle drives
and changes it with help of the gantry, rather than the tool changer
moving.  It is similar to http://www.cadcamcadcam.com/toolchanger.aspx
designed for the sherline.

If you are going to DIY, it is an interesting option.

There is also some old plans our there for a mini-rotary tool changer:
http://home.insightbb.com/~joevicar3/default.htm ... There is a yahoo
group that discusses it. http://groups.yahoo.com/group/mintoolchanger

Hope this helps some.

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Re: [Emc-users] Controlling a tool changer

[Jack Coats]

The mini-toolchanger is outside the work space
http://home.insightbb.com/~joevicar3/default.htm

But might need to be adapted.  It is basically powered by pneumatic
draw bar goes through the spindle.  Don't really remember how the
rotary action of the changer is driven.  I think it is from a
pneumatic cylinder.

Again, I could be all wrong.

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Re: [Emc-users] Parallela board

[Jack Coats]

Just curious, how much does LinuxCNC benefit (or not) from multiple
processors or 'cores'?

Some software does well, others need 'vertical mips' rather than
'horizontal mips' (to use some old terms).  Linux handles multiple
processors pretty well, the focus of this question is on LinuxCNC as
an application.

Much software can deal with being on multiple processors pretty well,
even if they do most of their work in one thread (and ancillary
processes and system services would mainly run on the 'other'
processors while the primary application can saturate one processor
with its main thread).

Thanks... Jack

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Re: [Emc-users] Old Computer War Stories

[Jack Coats]

There were both band and chain type line printers.  The chains and
bands were changeable, but had to re-load controllers with new code
if/when you changed them for alternate chains or bands.  The chain
printers (like the venerable IBM 1403N1) I spent many hours feeding
while in college.  We had one chain with both upper and lower case,
but mainly use an upper case only chain.  The upper only chain was
used for most things because it was faster due to having 3 or 4 full
sets of characters on the chain.  The 1403 did a thousand lines a
minute (roughly 60 characters per line for rating purposes), The
upper/lower case chain had 2 alpha character sets and one
numeric/special character set on a chain, so it was pretty slow.

The band printers were similar but slower (typically rated at 250 to
600 lpm) and the bands wore out faster (basically embossed metal
band).

Chain printers also could print up to 6 part copies with carbon paper
(remember that?).  Band printers couldn't strike as hard so it only
did 2 or possibly 3 if very thin paper/carbons.

NCR/pressure sensitive paper and lasers came about after I got out of college.

I was a 'printer expert' (only because I was forced) at a oil company.
 We first got IBM 3812 'desktop' laser printers, and finally got the
big roll fed lasers for the 'computer room'.  Both had their strengths
and weaknesses.  But inkjets wound up being the king of the mountain
for printing color seismic charts (4' wide and 50+' long, and lots of
them).  The inkjet replaced photographic color printer/plotters (and
reduced the cost a LOT at the same time).  Also reduced cost for large
format b/w printing/plotting as well.

Oh well, so for my history.

Yes, at one time I owned a IBM system 3 (cpu, consoles, card
reader/punch, line printer, tape drive, disk drive, cables, filing
cabinets for cards, the whole shebang).  Finally gave it away without
it ever running.  Too bad.  Still it save a marriage, and that is well
worth it.

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Re: [Emc-users] Kinematics - Help Our HackerSpace

[Jack Coats]

Just a hint:

The reason for making a copy of trivkins to mykins and use mykins
instead of trivkins is if you upgrade/update trivkins may be get
updated, your updates will be lost.

Just good software hygene.

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Re: [Emc-users] minimum storage for LinuxCNC on desktop

[Jack Coats]

Just do a minimal install, have /tmp put into / use the default swap.

It should work!

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Re: [Emc-users] WiFi Hardware For LinuxCNC?

[Jack Coats]

The best things I have found is to have it NOT use wifi directly but hook
on a ethernet 'game adapter'.  Something like a Linksys WRT610N ... I use
one for a machine that I can't get a wifi board to work in, and another
hooked to a small switch, to provide the 'upstream' link to my blue ray DVD
player for netflix, DLNA, etc, and have a POGO hooked up to it too.  And a
fairly long (5M) ethernet for when I want to use my laptop wired.

I have used the 'gaming adapters' for quite a while.  Just got these as I
was last upgrading my wireless network.

 ... Jack
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On Wed, May 1, 2013 at 11:47 PM, Bruce Layne
linux...@thinkingdevices.comwrote:

 I'm looking for a robust method to connect a LinuxCNC device to a WiFi
 network.  I bought some inexpensive USB dongles that are advertised as
 plug-and-play on Linux, but they didn't work with LinuxCNC.  They sort
 of worked with Ubuntu.  I could probably get them to work by installing
 the driver using something like ndiswrapper, but every time I upgraded
 to a new version of LinuxCNC, I'd need to slog through that again.  I'm
 looking for a more robust and persistent solution.

 I did a quick internet search but all I found were people asking the
 question and getting no good answer, or people complaining about the
 difficulty of implementing WiFi in LinuxCNC.

 Is there a USB solution that Just Works®?  That would be my preference.

 I bought an inexpensive Chinese WiFi router that is reported to be good
 at operating as a WiFi bridge.  Theoretically, I could configure it once
 and every version of LinuxCNC would see a reliable wired ethernet
 connection coming from the WiFi bridge.  Barring a magic USB device,
 maybe that would be the best solution?

 I need a solution that I can replicate across several different LinuxCNC
 devices for my Summer Of CNC Projects.  :-)

 Comments?  Suggestions?

 Thanks in advance.





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Re: [Emc-users] OT - help identifying machine in a collage

[Jack Coats]

Personally, it looks like a mechanism that is part of 35mm film handling
equipment.  Like a projector or even camera.  When in college I worked and
helped projectionist in a local theater where we handled film like that.
 In the '20s cellulose was used and could be part of 'flash fires' that
killed many projectionists so the fully enclosed tape canisters. [In some
projection rooms I was in that were built in the '20s, there are fire
doors.  The automatically slam shut by gravity, and are to heavy for one
person to open.  So if a projectionist is trapped inside, they are
considered 'lost'.  There were also fire doors on the 'projection windows'
that the movies are shown through to into the theater that would slam shut
too (about 1ft x 1ft square and also glass covered, normally)]
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Re: [Emc-users] Cable drive for a gas torch pattern follower?

[Jack Coats]

Yes is the short answer.  From some of the other answers you can get
details.

The only real question comes in can you use canned kenimatics or are custom
ones required.  Even modifying canned ones isn't to hard and this group can
always be available for consistance.
 On Mar 24, 2013 2:11 AM, Gregg Eshelman g_ala...@yahoo.com wrote:

 Looking into the possibility of fitting CNC to an old oxy-acetylene
 pattern following torch. (It can also mount a plasma cutter.)

 The torch mounts on the end of an articulated arm with two joints. On top
 of the arm is a variable speed motor with a 1/4 diameter, knurled,
 magnetic shaft. That runs around the edge of any bit of steel plate in just
 about any shape bolted to the pattern holder arm.

 The problems with that, the pattern has to be steel and has to be 1/8
 smaller all around than the piece cut out will be, and you have to have a
 pattern to be able to do anything with the tool.

 I've been thinking that a system with three or four servo motors and
 cables connected to the torch mount could move it around as well as a
 2-axis gantry.

 Can LinuxCNC run such a setup?


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Re: [Emc-users] LinuxCNC licence

[Jack Coats]

Rather than in 'manuals' you will find it referenced in the source
code more directly.
If you are considering commercial use, check the particular open
source license (there
are several) to see if it is possible to 'go private' or how to use.
The GPL most of us
think about is GLP2, and it is (very basically and roughly), 'do what
you want, give
us credit, if you make changes or updates, submit them back to the
public via this
same license'. -  There are other types of licenses that can say 'no
commercial use',
or 'do what you want - just don't blame us, and the initial source
stays free even if
you 'privatize' your changes'. ... So check the particular licenses
carefully if you have
commercial intent.  Most allow you to use it but there may be some caveats you
agree to tasitly if you use any or all of it.
 ... Jack
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Life is complex: it has a real part and an imaginary part. - Martin Terma


On Sun, Feb 24, 2013 at 5:50 AM, Viesturs Lācis
viesturs.la...@gmail.com wrote:
 Hello!

 Is there any place in manuals, which explicitly says that LinuxCNC is
 released under GPL?
 I looked at Getting started guide, User manual and Integrators'
 manual. All of them have Legal section, which says that each
 particular manual is a document, released under terms of GNU Free
 document licence and then several pages of GPL text, but I do not see
 any sentence saying that LinuxCNC is released under terms of GPL. It
 is said only in http://www.linuxcnc.org/index.php/english/about, so I
 was thinking that this should be also in some manual.

 I am asking this, because the plasma table client wants me to provide
 whole bunch of paperwork (which I do not see any use for), including
 also some paper, which declares that LinuxCNC is released under GPL. I
 would prefer printing existing page from manual or whatever. If that
 is not available, then I guess I will have to copy the text from the
 homepage and add a reference to it.

 --
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Re: [Emc-users] concrete table

[Jack Coats]

Lots of folks go get bags of playsand (relatively clean dry sand) and
build a sturdy box and mount it in the bottom of their equipment.
Line it with plastic sheet, then put the bags of sand inside the
plastic (just to keep any from leaking out) and screw/nail the box
shut.  Or even just lay bags over any stretchers between legs.  It all
just adds mass to the machine and keeps the 'walking around' down.

Even bags of sakrete (cement mix) will work, and if moisture gets to
the sakrete it will just turn into concrete.  Pretty innocuous stuff,
easy to find. The cement is a really fine powder, so you don't want
these bags coming open into your shop.  The cement is hard to clean up
if it has gotten damp or you try to wash it off sometimes.

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Re: [Emc-users] concrete table

[Jack Coats]

http://anosognosia.tumblr.com/post/416645749/cast-cement-cnc-chassis-by-kenny-cheung-via

He never finished publication of the entire build but here is a full
CNC machine

 ... Jack


On Tue, Dec 11, 2012 at 6:06 PM, cogoman cogo...@optimum.net wrote:
 On 12/11/2012 11:35 AM, Ralph Stirling wrote:
There have been entire machines
 built of concrete so you might just look into rebuilding your mill.

 (https://www.google.com/search?q=concrete+lathe)
 Why do lathes have all the fun?  Where are the concrete 3 axis machines?

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Re: [Emc-users] Is EMC going to work for me

[Jack Coats]

On Mon, Nov 26, 2012 at 4:15 PM, Allen g...@nidaho.net wrote:
 Hello,

 I apologies in advance, I'm largely uneducated in this field, the
 nomenclature may prove to be an obstacle at first.

 I am considering the purchase of an older CNC router (about 12 years old).
 What information should I provide to you to determine if the DC steppers
 on the machine will work with the EMC/LinuxCNC.

 Thanks, Allen

You are at the right place.  If the stepper motor controllers have
'step and direction' inputs, you should be OK.  There are devices,
like GECKO's, that you could refer to with your specific model and
manufacturer of the motors that could tell you if they could control
them in case your current system doesn't have the driver hardware for
the steppers, and LinuxCNC does GREAT driving steppers attached
through Gecko's and many othe rbrands of stepper drivers.  Gecko is
just one of the best known and a high quality brand.  Not that others
aren't too.

www.geckodrive.com

Take care.

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Re: [Emc-users] Does replying to old threads go straight to the spam bin?

[Jack Coats]

Not here.
 ... Jack


On Sat, Nov 10, 2012 at 3:41 PM, Jason Burton lathebuil...@gmail.com wrote:
 Several times I've replied to what seem like recent enough topics to no
 avail.

 The archive shows them as marked as spam.

 Just trying to understand the correct protocol.
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Re: [Emc-users] Does replying to old threads go straight to the spam bin?

[Jack Coats]

Yep, along with the 16 replies to it.
 ... Jack

On Sat, Nov 10, 2012 at 4:03 PM, Jason Burton lathebuil...@gmail.com wrote:
 Thanks. Did the reply to my 100 watt servo amp thread go through?

 Best,
 Jason
  On Nov 10, 2012 3:55 PM, Jack Coats j...@coats.org wrote:

 Not here.
  ... Jack


 On Sat, Nov 10, 2012 at 3:41 PM, Jason Burton lathebuil...@gmail.com
 wrote:
  Several times I've replied to what seem like recent enough topics to no
  avail.
 
  The archive shows them as marked as spam.
 
  Just trying to understand the correct protocol.

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

[Jack Coats]

www.vectric.com

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.

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Re: [Emc-users] OT - CNC Workshop not to be hosted by Digital Machinist next year

[Jack Coats]

After having been around putting on small conferences, it is a LOT of
work on the organizers.  Many do it for the love of the field, but
there needs to be something for the organizers whether it is public
thanks, financial support over and above just paying for expenses.

There is constantly pressure from vendors to pay less, from attendees
not being able to pay fees, from venues needing to get more for their
space (I doubt this was much in pressure at WWC, but I know I don't
know).

After doing a conference for a number of years, even if you still love
the field, driving a conference gets old.  This is why many turn to
commercial conference companies to 'deal with it'.  Then prices for
everyone does tend to go up, but the conference does go on.  Even with
their help, it is still hard to keep conferences on track.

Is any of than an answer or explanation to why?  I doubt it.  But I
hope it helps some see the perspective and to keep saying thanks to
the conference organizers for any conference.

---

For the 'geek' community of various genre's (software and hardwer
hackers/makers/builders, trekkies, comic, scifi, etc) there are still
large and small 'cons' across the land.

The 'maker' movement has the commercial Maker Faires, often sponsored
by local hacker spaces and/or Make: Magazine.

I think that if there is a strong CNC presence in an area (club?
interest group of any kind?), they might try putting on a CNC-Con
possibly elsewhere.  It won't be the same, but there is obviously a
need.

One local 'con' here in Nashville TN works with local 'second level'
hotels that have significant meeting rooms/ball rooms, and give the
group a significant discount on blocks of rooms to try to fill the
hotels on non-football, non-other big venue attractions in the area
weekends.

I like the idea of using small colleges in 'off season'.  There might
be opportunities s for that elsewhere in the country as well.

---

Just some suggestions. ... sorry I have missed going to this CNC
conference, I have 'meant to' but never did.

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Re: [Emc-users] Mach on Linux

[Jack Coats]

I am a Linux and open source advocate for just about every use, but I
do see good things from there being commercial software available for
Linux too.

The best thing is it will help Linux get out of the 'for geeks only'
view that many people have.

Will LinuxCNC and Mach go head to head?  Yes, for some.  But I don't
see Mach taking over the machine control market on Linux, but it will
be a good tool to add to the quiver of things that run on Linux,
proving that Linux isn't 'just for geeks'.

I spoke to a geek from Oracle that was running Oracle on Linux long
before it was 'made available' on Linux.  Not releasing it for Linux
was totally a marketing decision.  The developer I spoke with said he
had to change a couple of includes when he re-compiled a little, but
it was considered a 'no change' port from his perspective. (Oracle was
mainly running on SUN at the time).  And it was a big deal for
'commercial users' to get Oracle supported on Linux, giving Linux a
lot of legitimacy.  I see the Mach change to just be another positive
step.

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Re: [Emc-users] Counting and saving to file

[Jack Coats]

This might be a little obtuse, but consider putting a small UPS on the
computer and the monitor.
Set the software that monitors the UPS to shut down the computer after
a reasonable time automatically.

The operator would have enough time, if they are around, to get to the
computer and save the file, then
shut down the rest of the operation gracefully.

I use several UPS in my home, just for that reason, (and I hate to
loose stuff because of a quick power glitch too!).

warrning: war story
Where I live, in the toolies outside Nashville, we have power spikes
and outages regularly.  A fact of living on the other end of long
distribution lines.  So I put UPSes on EVERYTHING electronic that I
care about saving.  A problem in our transformer put 220V over 110V
lines intermittently (actually it was a poor ground at the
transformer, and the power company fixed it  but didn't admit it, so
we just had to pay for our burned out equipment - I was there when the
linemen got that 'oh stuff' look on their face, and took a short piece
of grounding strap and climbed up by the transformer ... after that no
more problems.).  Anyway the UPSes I had saved the gear it was on, but
others were toast.  Even one UPS died.  I opened it up and the
transformer primary was burned out, and half the MOV's inside were
black.  Batteries were still good, but discharged.  I kept them as
spares for other UPSes and purchased a new UPS for that spot. ( I like
refurbups.com and the APCC brand).

We still lost half the light bulbs in the house, and about $400 of
misc electronics to this power issue.  But nothing behind the UPSes
was lost.  One UPS died (additional cost).  Also, figure you replace
batteries about every 3 years if you don't monitor the UPS, and every
4 if you do (just because you can tell when the battery is getting
weak - monitor with computer software that 'just runs'.)
/warning

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Re: [Emc-users] Final user of EMC2.

[Jack Coats]

In a similar situation, a friend had a company for several years that
'sold' Asterisk (a Linux based PBX phone system).

The users understood how to use and do some user configuration of the
software,  but my friends company
made money by selling consulting services and the hardware (phones and
server and other misc equipment).
Some customers didn't understand why it cost so much since the
software is 'free'.

Basically the only way to make money with open source I have found is to

1) sell support (any number of contract and support companies from IBM
 Dell to the thousands of 1  2 person shops world wide)
2) sell hardware (Digium)
3) sell value added product (Red Hat)
4) use it as a tool (as end-user) to make/sell other stuff (locally
Tractor Supply is a RedHat shop that sells farm and garden supplies
and equipment through a retail network and online)

In parrens above are some samples or $$ makers using that model.  Like
in (4) above, there are many examples on this list.

Making money from OSS is hard.  But then again, making $$ anyway always is.

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Re: [Emc-users] OT - Ford diesels

[Jack Coats]

Depending on the jurisdiction, there is still a road tax.  If it is
known to go into
road vehicles, LPG and Propane are taxed.  I think it is relative to
the heat content,
and pretty soon my fuzzy crystal ball says various jurisdictions are
going to find
a new taxing method for 'alternative fuels' (anything other than gas
and diesel).

I think some already do.  They levy a tax based on the number of miles driven.

One day, I believe it will become standard to tax either all vehicles
by the mile or
some other basis.

But for doing comparison for the economics to work out and not get
unreal-surprises,
I would put in an assumption of 'energy density' prices, or relative
per mile prices.

Some states are working on this.  I think I saw Washington state
charges $100/EV,
and Kentucky charges about $120/EV per year.     So guessing tax is about
50cents/gal, those are only 200 or 240 gallons of tax, and say 40 MPG, would be
roughly the same as 8 to 10K miles of gasoline tax per year.But
from a quick
search it appears that 15K miles per year is about average in the USA. (and
in the UK about 12K miles/yr - in Europe it appears to be about 4500mi/yr)

Also if you can find non-Ethanol gas (there are stations in this area) it is
supposedly 114,000 btu/gallon

Taxes for each state are available at:
http://www.api.org/Oil-and-Natural-Gas-Overview/Industry-Economics/Fuel-Taxes.aspx
  They have separate charts for Diesel and Gasoline.  Gas currently is
anywhere between
  26.4 cents/gal and 67.7 cents/gal depending on your state.
  and 32.4 to 73.5 for diesel

(ref for energy densities:
http://en.wikipedia.org/wiki/Gasoline_gallon_equivalent )
 ... Jack


On Thu, Aug 9, 2012 at 10:34 PM, Dave e...@dc9.tzo.com wrote:
 Good point regarding energy density..

 LPG -  84,000 btu/gallon / $1.29 per gallon  =65,000 btu / $
 Gasoline with Ethanol - the crap we have here - 112,000 btu/gallon @
 $3.60 per gallon = 31,000 btu / $

 That is with road tax on both fuels.  So gasoline is over twice the
 price of propane right now.  Natural gas is even cheaper but I don't
 have a natural gas line at my house
 and the compressor to fill the tank to 4000 psi or so is expensive.
 Plus I only got about 120 miles out of the tank when it was full.

 I can refill the truck myself.  I already refill other cylinders off the
 bulk tank now.  If I run out, I can run it on unleaded gas - most
 propane setups are dual fuel.

 I'd like to put a 30 gallon propane tank in the Ford Ranger pickup bed -
 and even at 16 mpg I should be good for almost 500 miles.

 Dave

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Re: [Emc-users] Intel DN2800MT - possible new LinuxCNC star?

[Jack Coats]

On Tue, Jul 17, 2012 at 4:56 AM, Yishin Li y...@araisrobo.com wrote:
 On Tue, Jul 17, 2012 at 5:27 PM, Joseph Chiu joec...@joechiu.com wrote:

 Yishin, what was that Beagle Bone running?


 Joseph,

 It's with Ubuntu 12.04 armhf.
 The detail installation guide is here: http://elinux.org/BeagleBoardUbuntu
 And, this is my note about installing headless LinuxCNC on BeagleBone:
 https://sites.google.com/a/araisrobo.com/en/linuxcnc/build-for-beagle

 Cheers,

 Yishin

I just got delivery of a Raspberry Pi (B) ... runs ARM code and there is a
debian distribution for it.  Just not enough I/O available to make it a
rational LinuxCNC machine :(

It has composite video and HDMI video available, 2port USB for whatever
(keyboard, mouse, external drives, bluetooth, whatever you want),
and boots and runs from an SD card.  There is also a 'camera' interface
and a few GPIO pins (haven't checkd them out yet), a 'sound' port to plug
in an amplifier for audio and over the HDMI.
Power is via a 5v micro USB connector. needs 700mA.
JTAG interface pins, 10/100 ethernet port (standard connector),
a few status led's for 'der blinken lights'.  Ethernet is Broadcom so
don't expect detailed chip info, but it should 'just work' with appropriate
drivers.  Runs ARM11 processor at 800MHz

Info on raspberrypi.org

... Still I think I can find some uses for it (other than a toy, that
it is now).

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Re: [Emc-users] Intel DN2800MT - possible new LinuxCNC star?

[Jack Coats]

Newark Electronics.  Ordered it some time ago.  They charged my card
when they were available to ship.

 ... Jack


On Tue, Jul 17, 2012 at 7:52 PM, Dave e...@dc9.tzo.com wrote:
 Where did you get your Raspberry Pi from??

 I have a standing order for two of them at the moment.

 Scarcer than hen's teeth!

 Dave


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Re: [Emc-users] C Axis in Lathe

[Jack Coats]

Years ago I read an article on a guy that used a small lathe to make
the hundreds of 'pull stop handles' they needed for rebuilding large
pipe organs.

... A great use of CNC work!  A simple thing, but they needed so many
that doing them by hand was problematic.

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Re: [Emc-users] OT: 3D Printer Mods?

[Jack Coats]

Eventually it will be a command like:

   Tea, Earl Grey, Hot

and out it will come from the replicator.  ... But not in my lifetime. ... Sigh.

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Re: [Emc-users] OT: 3D Printer Mods?

[Jack Coats]

Thanks Gene.  I did mis-state about my grandmother moving into town,
she moved from a 'half-dugout' house on the family farm.

I barely remember visiting there once.

Yea, we got started 'late' for kids.  Didn't get married till 30, and I
just turned 60.
So kids are still 20-somethings.  In this area (hills of TN near Nashville)
'natives'
would have me be a great^3 or 4 grandpa by now.  I have met several in this
area that are.
That's what I get for growing up a 'city boy'. (mainly grew up in
Dallas-FtWorth area)

Before I fell in love with computers in the '70s, I was a MechEngr student.
 And materials
science was especially interesting.  Powder metallurgy was just coming out,
and I like
the idea of 'injection molding' metal parts.  (Form powder in molds like
injection molding,
then once out of the mold, run them through a sentering or annealing oven
to get the
metal particles to melt into each other.  Titanium dust was a favorite,
 but I started to
do assembly and FORTRAN about then and there isn't enough time in life to
learn
everything (especially if beer and chasing skirts gets in the way!).

Now with grey hair, getting into CNC and 3D printing is just my 'back to
the future'
moment of life.  Trying to give up my HVAC frozen server tending
all-nighters.
At one time, I had a pix after a long work session taken a Sunday morning,
after
coming in at 7AM on Friday, asleep at my desk, 5 mainframe monitors in
front of me,
3 other folks in the room asleep too, with coffee cups stacked nicely in
the trash can
with multiple 5' stacks of cups plus pizza boxes. ... That day my boss
wouldn't
let me drive home.  But I still had to be back at 7AM or earlier on Monday
to pick
up any dropped pieces when users arrived. ... In retrospect it was foolish,
but
a challenge too.  (It was doing mainframe office system maintenance on 4
separate systems and moving users data between data centers, as well as
fixing EVERYONES email addresses so mail went to the right data center.
A big task, and we did it every few months for several years.  The system
was PROFS, and of course IBM said we couldn't do it, so we HAD to do it! :)
... OOPS, Sorry for the memory lane (again).

 ... Jack
Whatever you do, work at it with all your heart... Colossians 3:23
You don't manage people; you manage things. You lead people. — Admiral
Grace Hopper, USN
If you are not part of the solution, you are part of the precipitate -
Henry J. Tillman
Anyone who has never made a mistake, has never tried anything new.
- Albert Einstein
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threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Re: [Emc-users] CNC Tube Bender

[Jack Coats]

That looks like a neat hack wirebender at http://blog.pensanyc.com/
for the DIWire Bender

To me it looks like they are using aluminum wire, so it is pretty
soft.  The steppers seem
to have gear boxes on them.  The controller seems to be an arduino
driving polu stepper
drivers.

I wonder what the 'nozzle' is made from.  It looks like something
white.  PTFE (Teflon)?
I would think it would need to be about as hard as the wire or harder.

The software looks pretty neat, but is it custom?  I just don't recognize it.

I think it could be pretty easy to control with EMC, but possibly
harder than a 2D CNC rig.

Inquiring minds want to know :)

--
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Re: [Emc-users] OT: and Soapbox: 3D Printer Mods?

[Jack Coats]

If you have a few minutes, this is a free assessment from the US Government for
evaluating intellectual property.
  http://www.uspto.gov/inventors/assessment/index.html



 ... Jack
Whatever you do, work at it with all your heart... Colossians 3:23
You don't manage people; you manage things. You lead people. —
Admiral Grace Hopper, USN
If you are not part of the solution, you are part of the precipitate
- Henry J. Tillman
Anyone who has never made a mistake, has never tried anything new. -
Albert Einstein

--
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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