These guys are on your turf too;
http://www.precisionmicro.com/
Except they wanted £1000 as minimum order
Regards
Roland
On 22 December 2011 16:24, andy pugh bodge...@gmail.com wrote:
I have been given a quote for electrochemical machining of an encoder
for my project.
Hi Gene
Why not up to speed with Eagle, albeit a horrible package. This has all
been done !
The free version of eagle should suffice. There is an automatic g-code
generator. Thats the best part. And some guys have written apps to probe
the board prior to milling, to correct for undulations.
If
wrote:
On Wednesday, January 11, 2012 07:39:33 AM Roland Jollivet did opine:
Hi Gene
Why not up to speed with Eagle, albeit a horrible package. This has all
been done !
The free version of eagle should suffice. There is an automatic g-code
generator. Thats the best part. And some guys
On 12 January 2012 06:25, Przemek Klosowski przemek.klosow...@gmail.comwrote:
On Wed, Jan 11, 2012 at 7:35 PM, gene heskett ghesk...@wdtv.com wrote:
I've looked at the Makefile its no resemblance to any Makefile I ever
saw. When I try to run the make, I get this:
On 18 January 2012 18:55, Sebastian Kuzminsky s...@highlab.com wrote:
In all seriousness, I'm perfectly happy with the Board's decision to
rename the project to LinuxCNC. It's a good name, and we've already been
using it in our web presence, which is perhaps the most important moniker.
Is
On 25 January 2012 19:41, Kirk Wallace kwall...@wallacecompany.com wrote:
On Wed, 2012-01-25 at 17:06 +0200, Viesturs Lācis wrote:
... snip
I tested by connecting/disconnecting 4N25 pin1 to GND and measured the
voltage on laser power pins.
Do you mean pin 2? Shorting pin 2 to ground
On 25 January 2012 20:17, Kirk Wallace kwall...@wallacecompany.com wrote:
On Wed, 2012-01-25 at 19:52 +0200, Roland Jollivet wrote:
... snip
By the way, you are using a PNP package for a NPN device. Be sure to
change it before doing a layout.
Regards
Roland
Uugh, that's
2012/1/25 Viesturs Lācis viesturs.la...@gmail.com
2012. gada 25. Jan. 19:39 Roland Jollivet roland.jolli...@gmail.com
rakstīja:
Haha. Sorry, it's funny. The BD139 is a NPN, so the position was right,
but
the symbol should have been changed from PNP to NPN. Otherwise, you can
leave
On 30 January 2012 22:33, Viesturs Lācis viesturs.la...@gmail.com wrote:
2012/1/30 Peter C. Wallace p...@mesanet.com:
Before you change encoders, and noting that others have used the CUI/AMT
encoders with success, can you try a little experiment to make sure this
is
not a noise --
On 6 February 2012 16:09, Erik Friesen e...@aercon.net wrote:
I have been looking pretty close at the pico systems board, however, as of
yet I am not clear how to integrate spindle amps monitoring with it. I
also want to monitor vaccum for a holddown system.
On Mon, Feb 6, 2012 at 9:02 AM,
Hi
I downloaded and burnt a CD of 2.4.6 and popped it into a windows machine
to have a look at it
But... (I think) I can't actually run EMC because it wants to install a
stepper config file on the drive, which I assume is a bad idea because it
has windows on it.
The only options I have are
On 12 February 2012 16:23, andy pugh bodge...@gmail.com wrote:
On 12 February 2012 14:02, Roland Jollivet roland.jolli...@gmail.com
wrote:
I downloaded and burnt a CD of 2.4.6 and popped it into a windows machine
to have a look at it
But... (I think) I can't actually run EMC
On 12 February 2012 19:25, Kirk Wallace kwall...@wallacecompany.com wrote:
On Sun, 2012-02-12 at 16:02 +0200, Roland Jollivet wrote:
Hi
I downloaded and burnt a CD of 2.4.6 and popped it into a windows machine
to have a look at it
But... (I think) I can't actually run EMC because
On 13 February 2012 20:59, gene heskett ghesk...@wdtv.com wrote:
On Monday, February 13, 2012 11:53:57 AM Bruce Klawiter did opine:
I do a ton of work with small cutters and in aluminum, I use a coolant
mister with alcohol, I use as much air as possible and just enough
alcohol to keep the
On 13 February 2012 21:38, gene heskett ghesk...@wdtv.com wrote:
On Monday, February 13, 2012 02:24:49 PM Roland Jollivet did opine:
..snip
I would imagine... that the oxide layer is way way thinner than a micron
in thickness, and while tough as you say, in climb milling the cutter
On 15 February 2012 06:13, gene heskett ghesk...@wdtv.com wrote:
On Tuesday, February 14, 2012 11:11:18 PM doug metzler did opine:
I don't know either, but I would think the black stuff would block
almost 100%, esp at low power levels - it's very high-density. What
thickness are you
On 15 February 2012 13:45, gene heskett ghesk...@wdtv.com wrote:
On Wednesday, February 15, 2012 06:35:36 AM charles green did opine:
get a CD that
you dont want to listen to anymore, and cnc it out of that. and then
paint it black.
Now that might be (the old cd) a usable idea. I
On 15 February 2012 19:17, gene heskett ghesk...@wdtv.com wrote:
On Wednesday, February 15, 2012 11:23:55 AM Roland Jollivet did opine:
On 15 February 2012 13:45, gene heskett ghesk...@wdtv.com wrote:
On Wednesday, February 15, 2012 06:35:36 AM charles green did opine:
get a CD
I'm not qualified to comment here, but;
With the continual difficulty with video drivers and other bits affecting
latency, who not split the the functionality. I don't mean a headless
system, just extending the neck. A partial mitosis.
This way, the motion controller part will work on almost any
On 20 February 2012 06:14, Jon Elson el...@pico-systems.com wrote:
Dropout wrote:
A quick question, does latency matter for servo drives?
Yes, absolutely. But, it is not as critical. For software stepping,
the base
thread is typically around 20 us, and so a jitter of even 5 us is more
On 21 February 2012 00:42, gene heskett ghesk...@wdtv.com wrote:
Greetings all;
I got the next generation of that board done today and populated it.
This slot type opto device is a Honeywell HOA2001, a 5 terminal device
whose basing is marked on top of each tower for the + terminal and an E
On 17 February 2012 03:20, gene heskett ghesk...@wdtv.com wrote:
On Thursday, February 16, 2012 08:16:36 PM Steve Blackmore did opine:
On Wed, 15 Feb 2012 16:29:36 -0500, you wrote:
The plastic, except for temporary fitting wouldn't do for permanent as
it will be trapped between the
And I thought thread rolling required huge rollers
http://www.youtube.com/watch?v=rt8VfgfWa54
OK, it is a small OD, but I did'nt think it was doable. The whole
contraption looks pretty lightweight .
Regards
Roland
On 27 February 2012 16:53, Alan alan.batter...@virginmedia.com wrote:
Hi,
I am replacing the dc motor on my mill with a 3phase motor + inverter as
part of its conversion to CNC. Here in the uk there are several
companies that sell inverters together with a remote pendant. My
question is can
On 27 February 2012 07:38, charles green xxzzb...@yahoo.com wrote:
that is why i suggested lots of pictures, with lots of cropping. there is
nearly guaranteed to be at least one accurate pixel in any photo. (no
accurate pixels = operator error) the stitching can be done by the most
On 3 March 2012 19:03, Kirk Wallace kwall...@wallacecompany.com wrote:
I was thinking of using an AVR analog input to sense the IRAMS internal
sense resistor then use software to look for current peaks and separate
the leg currents if needed, but this is much easier to plan, than to
make
On 18 March 2012 19:00, Kirk Wallace kwall...@wallacecompany.com wrote:
These look pretty handy:
http://www.pololu.com/catalog/product/1187
I'm thinking about ways to add load sensing for drives that don't have
this feature yet. Also, I wonder if they are fast enough for PWM signal
control?
On 4 May 2012 05:40, Jon Elson el...@pico-systems.com wrote:
Peter Homann wrote:
Jon,
IIRC correctly the pre CPLD drives did not have full step morphing. Also
the
new drives have a much improved recirculation sequencing. This means
that heat
sinking requirements for the drives are
On 6 May 2012 05:32, Przemek Klosowski przemek.klosow...@gmail.com wrote:
On Tue, Apr 17, 2012 at 10:25 PM, Jon Elson el...@pico-systems.com
wrote:
Dave wrote:
It is just a little overwhelming what can be done with these ARM MCUs.
Yes, I'm using the Beagle Board in some projects.
I
One of the better videos of large format CNC for those in want of a nice
bedtime video;
http://www.youtube.com/watch?v=Xn7tsNG6pyo
Regards
Roland
--
Live Security Virtual Conference
Exclusive live event will cover all
On 22 May 2012 15:51, John Kasunich jmkasun...@fastmail.fm wrote:
It can be (and has been) done. You probably will need to keep the
encoders on the motors, unless your ballscrews and the rest of the
drivetrain is very tight and backlash free. The trick is to use the
motor encoders for the P
On 23 May 2012 04:47, Jon Elson el...@pico-systems.com wrote:
Roland Jollivet wrote:
Does this mean you can use lower resolution encoders on the motor, or
should they be similar?
If you had 1um resolution on the fixed linear scale, what linear
resolution
should the rotary encoder
On 23 May 2012 08:08, Jeshua Lacock jes...@3dtopo.com wrote:
Greetings,
I turned on the power to my system today and my 180 pound gantry shot full
speed crashing hard into the end of my table.
It hit with so much force it actually lifted the front two legs of the
500+ pound table 6+
Hi Alex
Do you mind saying what you are printing, and if you feel the printing is a
worthwhile exercise? I've been looking at different printers for months,
but they only seem to be able to produce junk. Cnc'ing it out of a block of
plastic looks far more effective.
Regards
Roland
On 29 May
the cad drawing, but then
what? Maybe for me, the penny hasn't dropped yet.
Regards
Roland
On Wed, May 30, 2012 at 12:51 AM, Roland Jollivet
roland.jolli...@gmail.com wrote:
Hi Alex
Do you mind saying what you are printing, and if you feel the printing
is a
worthwhile exercise? I've
On 30 May 2012 21:00, andy pugh bodge...@gmail.com wrote:
On 30 May 2012 19:53, N. Christopher Perry n_christopher_pe...@me.com
wrote:
I've professionally used parts made by these processes for non-critical
brackets, rough as-cast like blanks for pneumatic manifolds
Oh, yes. At work they
On 3 June 2012 02:38, Jeshua Lacock jes...@3dtopo.com wrote:
On May 30, 2012, at 1:51 AM, Roland Jollivet wrote:
I've been looking at different printers for months,
but they only seem to be able to produce junk.
Hi Roland,
Check out the quality of prints on the Ultimaker some with 20
Sunday night video, high speed CMM. It almost looks too fast. See how the
engine housing and it's supports shakes relative to the CMM at 33s. But
they must have it all figured out?
http://www.youtube.com/watch?v=FUgWBlEewyk
Regards
Roland
butting in here..
isn't this leaning towards robotics?
You'd want to issue a command, like 'face end'. The control program then
sends generated G-code and receives feedback to/from the lathe to find and
measure the workpiece. It then selects a tool, speed, and faces it off until
there's a clean
Hi
Quick question;
Can Emc be loaded onto a machine with DSL (Damn Small Linux) ?
Regards
Roland Jollivet
-
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems? Stop.
Now Search
is, for example. (on a 400MHz machine)
end of ramble ramble
Regards
Roland Jollivet
On 02/09/07, paul_c [EMAIL PROTECTED] wrote:
Hi Roland
On Saturday 01 September 2007 14:53, Roland Jollivet wrote:
Quick question;
Can Emc be loaded onto a machine with DSL (Damn Small Linux) ?
DSL
Hi
I've had this idea for a while, as I posted on other cnc lists.
The proposal is to add, probably two lines of code, to echo every character,
as the G-code file is processed, to the serial port, unconditionally.
Using 232, or 232485 multidrop, you could have as many devices as you
want,
, is this worth pursuing? Is the functionality required already a sub-set
of EMC, or is it a huge re-work?
Regards
Roland Jollivet
-
SF.Net email is sponsored by: The Future of Linux Business White Paper
from Novell. From
Hi All
Thanks for all the informative replies. I'll pursue the references.
Sounds like it's doable, but the time/effort spent on software development
will exceed the material savings. Unless of course, a few thousand were to
be made.
I would not use gears to drive the arms, but feedscrews,
Hi All
I was wondering if anyone had experience with driving a single ballscrew
with two similar DC motors, one at either end?
So we have;
- one ballscrew
- one rotary encoder
- one servo drive
- two DC servo motors, one at either end of the shaft
One will obviously turn 'backwards' relative to
at it's maximum settings?
That is; current max set to 20A, and off an 80V supply.
So notwithstanding tuning issues, is anyone running Gecko/s all day at
their maximum ratings and not frying them?
Are they reliable?
Regards
Roland Jollivet
Hi
I (we?) have no idea of the application, but if the system is always going
to operate at low speeds, what about a fat flywheel on the drive motor to
smooth things out?
Regards
Roland
On 23/04/2008, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
Hi
I want to describe my understanding for low
Just use thin transformer wire. The self-fluxing type (usually red, not
orange)
Tin the end in the air, then solder to board.
Roland
2008/7/9 Kenneth Lerman [EMAIL PROTECTED]:
The classic wire wrap wire has kevlar insulation, and I believe that it
handles heat pretty well.
Teflon insulated
2008/8/6 Jeff Epler [EMAIL PROTECTED]
To accurately read a quadrature signal you must sample it frequently
enough that there is absolutely never more than one input transition per
sample.
Hi
Why aren't simple set-reset latches used? with interrupt on change? Then you
only need to
something like this?
- is it viable ?
- would the system get sufficient use?
I realise that the controllers is an enterprise in itself, but EMC would
only support a fairly strict packet format. It would then be up to users +
forums to build/buy a servo driver that complies.
Regards
Roland
suppose
that's the essence of it. If there was a generic data format, it could be
worked at from both sides, EMC fundi's and embedded tinkerers. I would be a
taker for the Pic side, but amending EMC is long way off for me.
Anyway, thanks for the thoughts.
Regards
Roland Jollivet
2008/11/20 John
Hi Jeff
Yes, I was looking at most of them, but I suppose the data format is not
trivial, as it's adressing FPGA's. I would also think toe's would be stepped
on if one tried to piggy-back someone elses format.
Regards
Roland Jollivet
2008/11/20 Jeff Epler [EMAIL PROTECTED]
There are several
Yes, I was thinking of this too. The option is make your own PCI card. One
can get away with simple adressing, and doing away with the 'plug 'n play'
side of things. Imagine, a PCI card with dip switches!
Otherwise use a generic PCI chip like the Tiger 320 or PEX8311. The thing
is, why develop a
2008/11/21 Jon Elson [EMAIL PROTECTED]
John Kasunich wrote:
Jon Elson wrote:
John Kasunich gives an excellent response, but didn't mention
connectors.
Actually, I did, in some detail:
Agreed, you definitely did mention at least one, specifically! But, a
multi-axis servo
Hi
If we look at HM2_7i43,
where can I find documentation on the actual read/write sequence to the
parallel port, and a map of the registers?
Regards
Roland Jollivet
2008/11/20 Sebastian Kuzminsky [EMAIL PROTECTED]
Roland Jollivet wrote:
Yes, I was looking at most of them, but I suppose
Thanks for that. Something to chew on for a few weeks..
Regards
Roland Jollivet
2008/11/21 Sebastian Kuzminsky [EMAIL PROTECTED]
Stephen Wille Padnos wrote:
Roland Jollivet wrote:
Hi
If we look at HM2_7i43,
where can I find documentation on the actual read/write sequence
Hi
It would be nice to have on something like this;
http://cubloc.com/product/05_02.php
(with linux of course)
or;
http://www.linuxdevices.com/news/NS2304885763.html
So the whole thing would hanng together like this;
http://controlafzar.com/products_en/controller_page.htm
Regards
Roland
, as expected with open source project, people pull in all different
directions.
Regards
Roland Jollivet
2008/11/22 Jon Elson [EMAIL PROTECTED]
Roland Jollivet wrote:
Hi
It would be nice to have on something like this;
http://cubloc.com/product/05_02.php
Especially, no parallel port
Not quite. Most UPS's around 2KVA and below are 'off-line', ie straight
feed-through. Far far cheaper to make. You pay through your ears for an
on-line UPS as it requires a full power down and up converter.
Regards
Roland
2008/11/29 Mark Wendt (Contractor) [EMAIL PROTECTED]
Kirk,
=48catName=UPS
which are usually chinese made.
2008/11/29 Rafael Skodlar [EMAIL PROTECTED]
Roland Jollivet wrote:
Not quite. Most UPS's around 2KVA and below are 'off-line', ie straight
feed-through. Far far cheaper to make. You pay through your ears for an
on-line UPS as it requires a full
Hi
I presume that the network card will be dedicated, as the parport is, and
only use a simple packet structure.. If one wants to connect to the
internet, then you'd use a seperate USB link or a second network card if
possible. That way there'll be no surprise jamming.
Regards
Roland Jollivet
Not too sure what you guys are on about, it's +100F here...
but why not make your own stuff like this;
http://www.excelfibre.com/building/products3.html
It's just shredded newspaper and boracic powder (maybe some starch)
Called CI (Cellulose Insulation)
Regards
Roland
2008/12/9 Dave Engvall
Hi
I don't know if you've seen this or if it's of help to you;
http://www.rainnea.com/cnc_toolkit.htm
Regards
Roland
2008/12/11 ftec [EMAIL PROTECTED]
Thanks Emory and others,
I am aware of the process in general, I currently have Mach and
Visualmill 6 std for cam but it only supports 3
Have a look at this https://www.youtube.com/watch?v=4knPtYjc2s8. I don't
know if it's just good advertising, but I'd like one..
You also need to be aware of the 'start' methodology. HF noise etc.
But from what I've read, you won't go wrong with Hypertherm.
Roland
On 15 April 2014 11:59,
Something I bought for another project and never used was
some steel
clock spring material. Basically just a thin steel band,
very similar to a
feeler gauge, but you can get it in several foot lengths. I
planned to
cable tie some cables and optical fibers to the band. You
could make a
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
Most Injection moulding machines use a 'Euromap interface for robots. Been
around for a while, but obviously European. I don't know what lathes or
milling machines have.
My feeling is that any machine only needs a few parallel lines to signify
status. The interaction is usually at a very simple
A bit off-topic, but in any thread, if Gregg Eshelman posts a comment with
his yahoo address, Gmail automatically sends it to spam. I just made a
filter to not-send it to spam, but was wondering if there was a reason, or
if anyone else experienced this?
Roland
On 30 June 2014 11:48, Gene
I gather from the first post that aram wants to integrate a 'depositor' and
a milling machine.
Here a very fine example(laser) of that;
https://www.youtube.com/watch?v=s9IdZ2pI5dA
Roland
On 30 July 2014 10:37, Gregg Eshelman g_ala...@yahoo.com wrote:
On 7/29/2014 6:40 PM, Jon Elson wrote:
Here's another;
http://www.wired.co.uk/magazine/archive/2014/08/play/steel-sketch
On 1 August 2014 10:01, a k pccncmach...@gmail.com wrote:
i think that to start deposit any part i will need some start plate -like
0.25- 0.187 thick
maybe when deposition will be finish - need to machine that
See here too, but not free;
http://www.cnccookbook.com/
Roland
On 15 August 2014 10:25, Marius Liebenberg mar...@mastercut.co.za wrote:
Thanks to all, very good information, as always :)
On 2014-08-15 09:15, Marius Liebenberg wrote:
Being new to cnc lathe setup I have to ask about feeds
On 18 August 2014 20:50, Dave Caroline dave.thearchiv...@gmail.com wrote:
Tip them pocket down and vibrate them, get the dust to fall out (use a
roller conveyor)
Dave
Best advise !!
But if you really want to use a camera, you'll have to contend with purging
a pocket around the lens to keep
Don't use a needle.. You can't get any tension without damaging the wire
and making it kinky. Rather look at the method of sewing machines. They
tension the string, and use smooth eyelets.
You want the wire to exit a large radius'ed flare. The wire should be
restricted before the nozzle/flare.
This is a nice idea. Start off with a 1m3cast block, and you build a fairly
simple two axis platform. If you keep it generic it it can be used for all
sorts of things.
You don't get to see too much of the 'lathe' but it's obvious enough;
https://www.youtube.com/watch?v=fML6VN88U_M
Regards
it is a half
million $ machine, but I'm not sure the base is one of those reasons. The
air bearing spindle he is using is instrumented with 4 capacitance probes,
so you can measure spindle displacements and estimate cutting forces.
On Mon, Sep 29, 2014 at 11:51 AM, Roland Jollivet
roland.jolli
Hi all
I'm trying to figure something out;
With a servo type system using quadrature feedback, I see that *the EMC ini
file uses two variables, FERROR and MIN_FERROR to define acceptable
following error for each axis. Think of MIN_FERROR as the following error
allowed at very low velocity and
cost encoder board) to have only 8bits per
encoder. Since each sample is now only a 4 byte read, the sample rate could
be far higher, and the hardware becomes a lot simpler.
Regards
Roland
On 19 February 2011 14:40, Peter C. Wallace p...@mesanet.com wrote:
On Sat, 19 Feb 2011, Roland Jollivet
On 8 March 2011 08:03, Clint Washburn cl...@clintandheidi.com wrote:
I am in the process of converting my 1978 Hitachi Seiki CNC lathe to EMC.
It currently has a 7.5 KW dc motor that used to be powered by FUJI SCR
drive. My first problem my house does not have 3 phase power. I am having
to
For machinery, UP should be On.
-If the switch breaks, it is more likely to revert to the off position.
-Bumping a switch while holding other things is more likely to knock it down
-It takes more effort to push a switch upp than down, to a safer position.
Regards
Roland
On 8 March 2011 15:46,
Thats interesting, the lever to draw the tool back for threading.
I wonder if it could simply pivot slightly, upwards, much like a shapers'
tool is free to lift on re-tract. Might bounce though. Anyway, it's really
machining chat and not EMC...
Regards
Roland
On 11 March 2011 01:02, Martin
I have seen thread milling, and while a great idea, I thought the code
generation might keep many away from pursuing it.
I stumbled upon this excellent freebie from Korloy to generate the G-code.
Looks like windows only though
http://www.korloy.com/korloy_en/contents/product/08.html
Oh, installed and ran fine on XP SP2
On 12 March 2011 14:09, John Thornton bjt...@gmail.com wrote:
Good find... but I downloaded it but it won't run or install on my XP
computer.
John
Roland Jollivet wrote:
I have seen thread milling, and while a great idea, I thought the code
What about using a few mains9V transformers. Then you can common the
secondaries. Sure, they'll all be phase shifted, but you should be able to
see what's going on, and I think you'll see spikes or whatever in the
waveform with a cutoff at about 400Hz.
Regards
Roland
On 15 March 2011 20:16,
Why not use a thread mill?
I was wondering about them, in that instead of taps, one could fashion their
own mini fly cutter from HSS for thread milling. It will take a lot longer
to cut the thread, but for hobby CNC milling time is not usually a problem.
Regards
Roland
On 25 March 2011 04:01,
I think that most people try to get too big a ballscrew into the X for
retro-fits. Go for a far smaller option, and there should be enough space.
If you use a manual lathe often, you'll be surprised at how little force is
required to feed the X, even on heavy cuts, considering too, that it's a
Hi All
I'm looking at manufacturing low cost OEM MPG's and just wanted to field
opinion on the wheel.
Some have a knob on them, while others have a few indents in the wheel.
Personally I see the indent as preferable, as in not getting bumped/bent,
but just wanted to see if there was some
small, movements. I've got both on my MPG, and I like
having both for the reasons stated.
Mark
On 03/25/2011 07:15 AM, Roland Jollivet wrote:
Hi All
I'm looking at manufacturing low cost OEM MPG's and just wanted to field
opinion on the wheel.
Some have a knob on them, while others
My apologies. I do agree, and is actually a pet gripe on many technical
documents littered with acronyms. But when mails on this forum are littered
with stuff like;
#t-wid+ = [[#_t-len] * 0.5] one assumes MPG (Manual Pulse
Generator) is understood. It's mentioned at least once a week.
the benefit of
allowing end-users to make their own custom keypads.
On Fri, Mar 25, 2011 at 7:15 AM, Roland Jollivet
roland.jolli...@gmail.comwrote:
Hi All
I'm looking at manufacturing low cost OEM MPG's and just wanted to field
opinion on the wheel.
Some have a knob on them, while others
Thanks for all the replies. I'll go with convention then; a rotating knob on
the wheel.
Throwing the hat over the fence; I'll post back on this within two months on
where I've got to. (too many projects..)
Regards
Roland
On 26 March 2011 04:18, Jon Elson el...@pico-systems.com wrote:
Igor
Hi Jon
My 2c here on the Z;
I think using paper, or other material is a common method to get the Z, but
it's not precise.
Rather set the Z on retract than approach.
Use a say, 1/4in ground dowel. Bring the z down to about 3/16th and then
gently try to roll the dowel under the bit as you
Retracting to touch off, if you have backlash, is more error prone.
I was wondering about that, but did'nt want to delve into backlash because
it's a long seperate topic, but;
Surely, it's even worse to set Z on approach on a vertical mill if you have
backlash, because during or at the end of
I looked at similar some months back.
http://precisionmicro.com/6/processes/photo-etching-|-photo-chemical-etching-|-chemical-milling-|-metal-etching
These guys wanted £1000 to get started. Still not sure how many discs I
would get for that.
And an american crowd;
AFAIK Lexan is specifically designed for tough impact conditions, like a
window on a machining centre, so no, it wont shatter.
Roland
On 6 April 2011 17:19, Igor Chudov ichu...@gmail.com wrote:
I did an experiment. I took a 1/4 thick piece of junk Lexan, and beat it
with a steel bar. The
I think the OP wants to drive stepper motors using four digital lines for
one stepper motor;
A, B, C, D phases, much like one would directly drive a LM298.
Regards
Roland
On 28 April 2011 10:06, Ian W. Wright watchma...@talktalk.net wrote:
Lawrence,
Is this driving conventional steppers or
I really like this style;
http://www.youtube.com/watch?v=X6hVL9bomh4feature=related
There are other videos (other manufacturers (will find the link tonight))
showing how you lay a strip of foam into the grooves to make isolated
pockets.
I think it's a fantastic idea, even to use on a metal
, but have not tested it yet.
The principle though, looks very versatile.
http://www.youtube.com/watch?v=QFOY8p1X6jQ
Regards
Roland
On 29 April 2011 12:08, andy pugh bodge...@gmail.com wrote:
On 29 April 2011 09:25, Roland Jollivet roland.jolli...@gmail.com wrote:
I think it's a fantastic
Open the back and look at the servo drives. The one I saw in the past seemed
to take step and Dir. It was all labelled. The cabinet was very well built
and quite modular.
We were cutting brass, tool steel and zinc, with the original machine.
The only thing that I was concerned about was the
On 14 June 2011 23:20, Peter Loron pet...@standingwave.org wrote:
On 06/14/2011 08:53 AM, Kirk Wallace wrote:
On Mon, 2011-06-13 at 13:47 -0700, Peter Loron wrote:
Hello, folks. Can anybody comment on using hall effect switches on a 3
axis mill for limit / home switches? Seems like they
The stepper resistance looks a bit high at 2.1ohm/phase. You wont get much
speed on the supplied 24V psu.
Regards
Roland
On 31 July 2011 08:32, Tobias Gogolin usert...@gmail.com wrote:
Hello EMC users, I am new to this issue (have been lurking for a while) but
now plunged into the reality
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