Re: [Emc-users] Why are there different sizes of centre drills?

On 2024-05-11 03:32, andy pugh wrote: That's it. really. Why? A large-diameter one with a small drill point could make all the sizes. as far as I am aware the drilled hole is irrelevant. I suppose it might have mattered as a reservoir for the white lead in the days of solid centres.

Re: [Emc-users] Carving a spiral

As I recall, someone on this list posted a note or a link about how to create a fusee for a clock (essentially a tapered spiral, running from large diameter to smaller diameter while spiralling - rather like a tapered woodscrew thread). Is a constant-diameter version of that what you had in

Re: [Emc-users] Axis direction

John, Leaving aside right or left hand rules etc, leaning your head towards your left shoulder shows that the relationship between the spindle and the carriage is the same as on a vertical mill. To bring the spindle closer to the carriage is a move in the -Z direction. If the argument is

Re: [Emc-users] Test

On 2024-02-03 16:30, andy pugh wrote: Is this thing on? I have nothing since the 18th of January, and neither does the archive at Sourceforge. Message received here OK. Nothing else noted during the period since 18th January, so I assumed everyone was happy and no-one had problems, or was

Re: [Emc-users] OT: novel 3+ n axes

On 2023-11-23 21:18, Chris Albertson wrote: Yes, a magnet and a steel disk is the simplest possible design. If you don’t need indexing. Nothing would move. The disk could slide over the magnet and then when energized the sliding would stop. The slop issue is normally solved by always

Re: [Emc-users] LinuxCNC 2.9 is Released

The LinuxCNC 2.9 release is much appreciated. Your ongoing sustained efforts have involved sacrificing some of your precious time and considerable talents. So a Great Big Thank You for that. Marcus ___ Emc-users mailing list

Re: [Emc-users] LinuxCNC build on BeagleBoneBlack

On 2023-08-04 17:44, John Dammeyer wrote: I too have a BBB which has been sitting in its box for a very long time, partly because the Xylotex boards had disappeared. Its a shame, and I'd like to use the board on my CNC router. I understood some of the reasons for the MachineKit fork, but

Re: [Emc-users] [Emc-developers] Trajectory planner shortcomings

On 2023-07-04 23:21, Sam Sokolik wrote: Lol - then I guess I read too far into it.. I have run 4th axis rotary motion just fine.. The problem I have is that because 4th axis is rotary motion on my setup, the way the angular rotation speed is handled means the rotary axis rotates at a very

Re: [Emc-users] Drilling holes in the back of a stepper motor

On 2023-06-25 10:33, andrew beck wrote: Adapter plate sounds easiest to me +1 for an adapter plate; its much safer and also more versatile. Have you thought of mounting the encoder parallel to the stepper, and using a small pulley and belt between the shafts. That might give you more

Re: [Emc-users] Sewing Machine Stiffness

On 2023-05-21 03:43, Chris Albertson wrote: Even 3D-printed PLA plastic can be strong enough. I have a 3D-printed CNC conversion of a harbor freight milling machine. Normally they use metal parts for the motor mounts and such but PLA can be just as rigid if you make the parts thicker. Yes;

Re: [Emc-users] Sewing Machine Stiffness

On 2023-05-20 20:12, Chris Albertson wrote: If you are going to the trouble of filling a frame with epoxy then two things… 1) Why bother with the frame, just print a plastic mold and fill that. with epoxy. Then it will be the exact size and shape you need. Interesting idea, which makes a

Re: [Emc-users] Linuxcnc HAL and AI

On 2023-02-02 17:25, Roland Jollivet wrote: Since most ?? of us have some difficulty with configuring the HAL script, I thought maybe ChatGPT could help. Excellent thought, Roland. But to what extent can ChatGPT help? I have just been reading that, at the moment, it essentially fetches

Re: [Emc-users] Happy new year and also checking if the list is alive

Happy New Year to you, Leonardo, and to everyone else on the list. Like you, I haven't seen much activity so I assumed everyone was either eating or had escaped to the workshop. I had regular messages up until 23rd December, then one on 28th December but no activity after that until your email.

Re: [Emc-users] my camera works this morning - came twice

Gene wrote: This msg is cc'd to the user list, did you get 2 copies? The first attempt to re-edit and re-send this was clipped off in the middle of the sourceforge word above. Cheers, Gene Heskett. Yes; I got that message twice. Gene. Regards, Marcus

Re: [Emc-users] OT How to make fine splines

On Mon, 24 Oct 2022 at 15:33, John Figie wrote: Anyway I am wondering how the splines were made on the original. I could use the E head, (shaper) on my bridgeport and a rotary table. Do you think this is a good idea? At first glance, seeing the rounded inner end to the splines, I

Re: [Emc-users] CAM software

On 2022-10-21 18:54, Robin Szemeti via Emc-users wrote: For CAM I use Cut2D+ from Vectric. Very good, very cheap. Having come from Inventor, I use the free version of Fusion 360, and find the interface suits me (most of the time). I agree that any CAD package requires lots of learning

Re: [Emc-users] Acorn CNC

Using LinuxCNC, I have a set of self-written wizards/demons in a folder. Start LinuxCNC; load the demon I need; use GEDIT to set the user values of, say, Xwidth, Ybreadth, tool diameter. Reload in LinuxCNC and run it. Not fully conversational, but reasonably quick and convenient. There is no

Re: [Emc-users] Printer ports are not dead yet! (linuxcnc closing the servo loop with $10 pci card)

Sam, Thanks for posting that link. The video gives a really good explanation which is much appreciated. Thanks for taking the time to do that. Regards, Marcus On 2022-09-01 00:39, Sam Sokolik wrote: some mansplaining.. https://www.youtube.com/watch?v=VWXCAxUzXK0 On Tue, Aug 23, 2022 at

Re: [Emc-users] Printer ports are not dead yet! (linuxcnc closing the servo loop with $10 pci card)

On 2022-08-23 19:29, Sam Sokolik wrote: Little Emco lathe with some pittman servos... Amc drive that takes PWM+Dir. Looks pretty smooth to me. What Pittman servos are those? What will you do with the spindle drive motor? Servo? Marcus ___

Re: [Emc-users] Custom m codes

Andrew, Thanks for a particularly good explanation of what you did. All useful knowledge. Marcus ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Project Progress

On 4 Nov 2021, at 21:46, andy pugh wrote: > > Or possibly: > https://photos.app.goo.gl/72BgoRiKeGmQqDHs9 I removed the ACME screws when I converted my mill. I replaced them with ballscrews. The nuts are platform-style, rather than cylindrical.

Re: [Emc-users] Project Progress

John, I always use single flute router-style cutters (Accupro, from MSC Industrial at www.mscdirect.co.uk) which are specifically designed for machining aluminium and are highly polished so the aluminium will not stick to the flutes. These are jolly expensive cutters, and other makes are

Re: [Emc-users] Replacing a handle.

On 2021-10-13 09:31, Gene Heskett wrote: > Unforch, John, not even my latest copy of freecad can open that file. > It opens OK in the free version of Fusion 360. Marcus ___ Emc-users mailing list Emc-users@lists.sourceforge.net

Re: [Emc-users] Replacing a handle.

On 2021-10-13 06:31, John Dammeyer wrote: Thanks Chris. I haven't needed the handle all that badly or I would have done something. What I also just noticed is the plastic handle is held with a rivet into the top of a larger extension. New drawing attached. Isn't there also a raised ring on

Re: [Emc-users] Safely Upgrading LinuxCNC

On 2021-09-15 23:29, John Dammeyer wrote: I have too much other stuff installed on that PC to want to re-install the OS with a new version that included LinuxCNC 2.8. Good point. I run a single dedicated PC for each machine. I also have swappable C:/ and D:/ drives, so I can preserve the old

Re: [Emc-users] Safely Upgrading LinuxCNC

On 2021-09-15 22:10, John Dammeyer wrote: It's rarely ever smooth or simple. I have consistently found it is less painful and usually quicker to simply download the whole live/install image and use that (after saving INI files etc). Life is too short, etc. Marcus

Re: [Emc-users] Something went wrong.

On 2021-08-05 06:13, John Dammeyer wrote: How does one know what size tabs and how many? I view this as a mystical black art. For me, the basic idea is to (a) support the part to prevent damage when it separates from the parent, to stop it catching the cutter for example. In that case,

Re: [Emc-users] Something went wrong.

John, Two suggestions: 1. I have experienced the same symptoms in the past, and it turned out to be the bolts securing my Y axis nut (which has a square flanged base) moving under the inertial load of the table. 2. My approach to machining the part might be to not cut the box section to an

Re: [Emc-users] Something went wrong.

On 2021-08-03 04:43, John Dammeyer wrote: So there are other issues before I can start on the Ball Screw Conversion. You might bear in mind that ballscrews which use a single nut don't have zero backlash. They do have consistent backlash over the length of the screw - until they wear, of

Re: [Emc-users] Metallurgical Advice?

On 2021-07-28 18:25, Todd Zuercher wrote: Is there any hope of repairing the table? Are we going to have to replace the whole table? Could the crack be welded, or is that a bad idea? My main fear is that warpage issues will cause the linear guides to bind. (The table surface can always be

Re: [Emc-users] Mounting spindle sensors.

On 2021-07-01 02:54, John Dammeyer wrote: With a bit of oil on the part the chips come off smoking. A little more oil will cure or at least reduce the smoking. Flood would cure it completely, but more neat oil squirted on will do the trick. How's my speed? Too fast? Too slow? Just .

[Emc-users] 3D printer long bed [was: Code of Conduct]

On 2021-06-29 09:52, Robert Murphy wrote: 3D printing seems to be what the young people jive with. It’d be great to slap on a heated bed and a print head on the mill and get a slightly longer working envelope. Obviously with the right config. I'm no longer one of those 'young' people, but all

Re: [Emc-users] 2.8.2 Release

On 2021-06-28 00:08, andy pugh wrote: LinuxCNC 2.8.2 has been released. This is great news. Lovely to see the software being updated and continuously developed. Its a smashing tool. Thanks to ALL the team. Marcus ___ Emc-users mailing list

Re: [Emc-users] Shuttle Express

On 2021-06-24 17:29, John Dammeyer wrote: Anyway, for now the Shuttle is back on the MACH3 based CNC router where it's currently in use carving up MDF so I can't borrow it back for a few days. I have the Shuttle (not the Express, but the other one with the extra buttons etc). It works a

Re: [Emc-users] Gear cutting setup on low-cost HF mill??

On 2021-03-11 06:28, Chris Albertson wrote: What's the best kind of steel to buy that gives a combination of machinability on a small mill and strength. I would be inclined to try EN8T which is a machinable steel with some tensile strength that can easily be hardened afterwards, using an

Re: [Emc-users] Assembled control cabinet

On 2021-02-13 18:10, John Dammeyer wrote: Friday night I put everything back onto the mill to make sure that with all the cabinetry and wiring changes (including a new Knee Motor) that I hadn't broken anything. Everything works as this video demonstrates. https://youtu.be/I6lvnYhlez4 Nice

Re: [Emc-users] machine opinion please

On 2021-02-07 03:27, Jon Elson wrote: For a CNC retrofit, you really want ballscrews, why not find a machine that comes with them from the factory? Having got into trouble some time ago when converting from ACME to ballscrews, I endorse Jon's view. The problem with ballscres is that you may

Re: [Emc-users] Sheet metal operations.

On 2021-02-01 21:47, John Dammeyer wrote: What I'm wondering is if it's worth the trouble to add XY to a 3 ton arbour press. The back fence for the 3:1 tool is almost done so it's just a matter of finishing it. But I can't see how any of the CAD/CAM software out there addresses using a small

Re: [Emc-users] Bed isn't flat on my 6040.

On 2021-01-06 04:25, Bruce Layne wrote: Why don't you just install a spoil board and machine it flat like most people do with a CNC router? When I converted my mill, I followed some published instructions for an identical mill, and added ballscrews. That involved machining a shallow 'trench'

Re: [Emc-users] 3D Printed L Type Timing Pulleys

On 2021-01-02 06:53, John Dammeyer wrote: I have noticed the 3D printed pulleys are noisier than the metal ones. I wonder whether that is because the surface of the teeth will inevitably be rougher than if they had been die-cast or machined? But the noisy grind of the stepper motor is also

Re: [Emc-users] Great display of 28-axis machine control - totally OT

On 2020-12-30 02:20, Chris Albertson wrote: This is I think to date the best display of machine motion programming ever https://youtu.be/fn3KWM1kuAw Truly outstanding. The Lead Programmer obviously has a great sense of humour. Marcus ___

[Emc-users] Beaglebone and MachineKit

John (or anyone else), Is there a 'cape' currently available to suit the Beaglebone Black running MachineKit or LinuxCNC? I know there used to be a cape specifically for that purpose, but it has been out of production for some time. I have a Beaglebone I would like to press into service

Re: [Emc-users] Spindle indexing

On 2020-12-06 05:41, John Dammeyer wrote: What I was wondering is if LinuxCNC, with a suitable Servo Motor or high res encoder on the spindle can treat it like a 4th axis on a mill. Some years ago, I came across a chap who had created the InTurn, which was essentially a lathe headstock for

Re: [Emc-users] Version 2.8.1 is released

Thanks to the team for the update, and for all the effort. It is much appreciated. Marcus ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Analog circuits ebook - from e-magazine "Electronic Design"

On 2020-11-28 18:36, Karl Schmidt wrote: I would second this recommendation.. If you want to get into Electronic design you should read any/everything by Pease, Jim Williams, and Bob Widlar .. So would Circuits, Devices and Systems by Smith be a potential member of that list? Mine is Second

Re: [Emc-users] ender 3 and low quality sprockets

On 2020-11-11 05:12, Gene Heskett wrote: Greetings 3d printer X-spurts; So I've come to the conclusion that quite a bit of what you can download as .stl's, are intended to be very low resolution so as not to compete with the same you-toobers commercial offerings. I don't know if that is the

Re: [Emc-users] I am STILL not getting G2/G3

Gene, I am probably barking up the wrong tree, but: As a general method, I would position the controlled point where I wanted the routine to begin. (Say at X40 Y25 Z10) Then I would call the subroutine. Inside the subroutine, I would use G92 to set the current position to zero (or some other

Re: [Emc-users] Cutting fluid

On 2020-10-21 20:10, Nicklas SB Karlsson wrote: I learned cutting fluid could be unhealthy. Anyone here have any experience? I understand the problem has been that soluble cutting oil tends to drench the operator at waist level (on older machines which do not have total enclosures). That led

Re: [Emc-users] driver for a DC motor for a BS-1.

On 2020-10-19 23:30, John Dammeyer wrote: I haven't looked into what's available from China other than the Bergerda AC Servos I'm using as a mill spindle and will be using as the South Bend Lathe Lead screw upgrade. Can you tell me the model of servo, please. And explain the control device?

Re: [Emc-users] Mist Coolant

Why not flood with neat cutting oil? It's a much nicer smell, although you do need to watch out for staining of close-fitting surfaces. I have serious doubts about the health hazard that a mist of any sort poses to the operator's respiratory system. Marcus

Re: [Emc-users] printer balistics questions, unrelated to linuxcnc

> On Sunday 02 August 2020 13:32:03 Bruce Layne wrote: > >> I'd 3D print some low profile clips for the glass plate I used Bulldog clips. I cut the handles short on to of them, to stop them fouling the uprights as the platform passes through. Basically, I used 1 clip per side. Works fine.

Re: [Emc-users] Cutting plastic film

On 25 Jul 2020, at 08:43, andrew beck wrote: > single flute > router cutters for like 3usd.Just trying to help fellow > linuxcnc guys Thanks. That's really useful to know. At around 80USD for a 12mm cutter locally, this is a source I will try, especially when you are saying you have

Re: [Emc-users] Cutting plastic film

I bought a cheap drag knife some time ago, from a far off land, but I have not yet used it, because: (a) it does need routines for turning corners, and (b) upon inspection, I decided that a critical factor is likely to be the ability of the knife to swivel very freely; and this cheap one didn't.

Re: [Emc-users] mailing list for ender 3 pro owners?

On 2020-07-17 23:03, Gene Heskett wrote: What I've found on the web seems to say that black PLA needs more heat for normal stuff and even more for starter adhesion. I use a fair amount of black PLA+, and run my Anet A8 at 225 nozzle, 60 bed. I have found some variation in temperature for

Re: [Emc-users] 2.9.0 Jerky jog

You may be getting RFI from that motor. Marcus On 5 Jul 2020, at 23:58, N wrote: >> On Sun, 5 Jul 2020 at 14:07, N wrote: >>> >>> Are currently using version 2.9.0 pre something. G0 move work smoothly but >>> jogging is jerky, anyone else here made same experience? >> >> How are you

Re: [Emc-users] max motor size that a 8i20 can control

Wow: that's a beauty. Did you give it a wax and polish to get that shine? Marcus On 22 Jun 2020, at 09:23, andrew beck wrote: > Hey guys. I bought the vertical machining centre! > > Bringing it home tomorrow then into the retro hopefully. > > Here are some photos > >

Re: [Emc-users] Printer working, need involute gear designer

Gene, Have you looked at www.gearotic.com or did someone mention that already? Marcus ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Health update

On 10 Jun 2020, at 19:15, Gene Heskett wrote: > . But I do have to admit, its been one heck of > a ride. I was my Mum's carer for many years and we had breakfast together every day. Sometimes she was tired and would trot out an old saying "Keep going old horse, and you'll get corn" When I was

Re: [Emc-users] Gecko Failure

This is interesting, for two reasons: 1. I had two Geckos fail last year, after 10 years or so running at 78 volts. The Gecko pins were not burnt, but I did burn a pin on a heavy duty 5 pin XLR connector, twice on the same connector.Gecko combination. 2. I suffered intermittent failure on one

Re: [Emc-users] Had to share

Spam, spam, double-spam, egg, spam, spam and spam. Loved the video; wouldn't eat the end product, though. Marcus On 27 Mar 2020, at 11:25, andy pugh wrote: > https://youtu.be/GX68sOHZ12M > > For maximum enjoyment turn on auto-captions. They really can't handle > his accent. > > -- > atp > "A

Re: [Emc-users] question about glue

On 11 Feb 2020, at 18:34, Chris Albertson wrote: > "JB Weld" Epoxy. It is a mixture of two part epoxy and steel powder. Get > it at any auto parts store or Home Depot. > > On Tue, Feb 11, 2020 at 10:30 AM Gene Heskett wrote: > >> >> >> What sort of glue can I use that can withstand an

Re: [Emc-users] Backlash comp monitoring

On 24 Jan 2020, at 05:07, David Berndt wrote: > > I'm having a bit of an issue with some geometry not coming out as expected, I > was hoping that being able to see what backlash comp is doing on screen. It would also be very useful to understand the algorithm being used to apply backlash

Re: [Emc-users] 2.7.15 released!

On 2020-01-06 05:12, Phill Carter wrote: apt-get upgrade only updates an existing package to a newer version. It is what I have always used on my LinuxCNC machines. And being paranoid, I first backup my config files. Being full of good intentions, but usually pressed for time, and not having a

Re: [Emc-users] Need a power signal independent of linuxcnc.

Would a half-decent UPS not solve the problem? More expensive, for sure, but fine for brown-outs and short cuts. I know these were discussed recently, but we used to use them to keep computer systems going in broadcast radio studios where the Buildings department used to cut the power as part of

Re: [Emc-users] LinuxCNC 2.7.14 Axis Problem with File

On 25 Nov 2019, at 13:16, andy pugh wrote: > On Mon, 25 Nov 2019 at 13:15, Thomas D. Dean wrote: > >> I pressed many keys, maybe ESC?. CTRL-ALT-F2 did nothing. Strange. > > Esc definitely works, though it may not work quickly. > I don't doubt it is supposed to. But I have suffered this

Re: [Emc-users] misters for really small setups?

On 2019-09-30 18:16, Gene Heskett wrote: Greetings all; Where can I find a mister assembly with a tip 1/4 the size of the common tip used with the bendable linked coax hosing everybody sells for around $10 USD a copy. Could you use a cheap airbrush? Marcus

Re: [Emc-users] First project with LinuxCNC.

John Dammeyer said: Well. Not the best in the worldMarcus says:That rather depends on how you define 'best'. Personally, I would say that the result certainly is the 'best' in the sense that producing the work and proving the machine and workflow is the optimum outcome at this stage.Deserves not

Re: [Emc-users] bluing scraping

On 27 Apr 2019, at 13:29, TJoseph Powderly wrote: > > Winsor Newton Winton Oil 1414538 Prussian Blue 37ml > > This stuff is really easy to see. > the granite plate charges and stays for many imprints. > > hope this helps someone > Thanks for that. I have some 'genuine' blue, but it is

Re: [Emc-users] Cutting aly with a drop/sliding saw

On 26 Apr 2019, at 06:58, Gene Heskett wrote: > a tooth style called ATBF, where a flat topped > tooth is fitted between the angled teeth. I use a table saw fitted with an ATB blade for cutting sheets of aluminium up to 16mm thick. It works a treat, and gives a pretty fair cut, even on

Re: [Emc-users] Vacuum bed for router Re: Servo reduction for gantry machine

On 24 Apr 2019, at 10:18, Les Newell wrote: > I guess you could seal it afterwards with paint. Yes, but having painted MDF before, it requires a particular sealer, then several coats of paint, which is a bit of a pain. So its a method which is lower in material cost than, say aluminium, but

Re: [Emc-users] Fusion 360

I am still using Inventor 2011. Yes; it took a while to get to grips with it, but it's very capable. I have 2014 but have never installed it (always seem to be waiting for a newer computer). Inventor has become Fusion 360 now, so there seems little point in upgrading Inventor itself. There is no

Re: [Emc-users] g92 problems

  Gene wrote:; The docs for G92 are a bit hazy, I find that with no arguments, it still  puts the machines 0,0 at where the machine is ATM, which is not what I  needed. Is this intentional? That would imply G92 X0 Y0 would set Z0 because the command does not refer to the Z axis. In practice,

Re: [Emc-users] Fiddling with home in gcode

I' m not entirely sure I have the correct picture of what you are trying to do, but I have cut lots of panels covered in holes for D-subs and audio connectors (for sound studios) and a series of mould plates for plastic moulding which consist of rows of identical recesses. G92.1 cancels all G92

Re: [Emc-users] Where's the path?

On 22 Oct 2018, at 23:15, Gene Heskett wrote: > what you probably want > is: > > PROGRAM_PREFIX = /home/marcus/linuxcnc/nc_files > Thanks, Gene. I had already set the path in PROGRAM_PREFIX, but what I didn't notice is that it is case sensitive - or at least that I had entered lower

[Emc-users] Where's the path?

You know those little things that finally do your head in? When I choose to Open a file in LinuxCNC, it uses an inconvenient path name, so I always have to go up a couple of levels and select the directory I need. I can't find where the path name is stored, in LinuxCNC or in Axis. Where should

Re: [Emc-users] No mail received?

On 19 Oct 2018, at 19:11, Bruce Layne wrote: > There was a lengthy phase when I wasn't saving much time with unattended > CNC machining because I'd just stand there staring at the CNC machining while > thinking, "This is so cool." > There is nothing quite so satisfying as having lunch

Re: [Emc-users] Just in case anyone is interested in my tool changer...

On 27 Aug 2018, at 21:44, Les Newell wrote: > I uploaded a quick video of it in action > Nice action, and I like the logic for the tool length setting/not setting. Marcus -- Check out

Re: [Emc-users] linuxcnc run problems

On 8 Aug 2018, at 01:29, Gene Heskett wrote: > On Tuesday 07 August 2018 19:26:41 Mark Wendt wrote: > >> On Tue, Aug 7, 2018, 19:03 Gene Heskett wrote: >>> The joint 2 following error is likely stopping it before it can move >>> the on-screen DRO more than 2 or 3 counts if that far. Two

Re: [Emc-users] Possibly useful keyboards

On 31 Jul 2018, at 17:38, Gene Heskett wrote: > So I wouldn't mind either a flat membrane keyboard I have a roll-up flat membrane keyboard on one of my Linux PCs and it works ok, but I find it does not like fast typing. Marcus

Re: [Emc-users] CAD for LinuxCNC

On 24 Jul 2018, at 21:02, Sebastian Kuzminsky wrote: > I think "rest machining" refers to doing initial machining passes with > a large-diameter cutter, having the CAM keep track of the remaining > material that needs to be removed, and then doing finishing passes > with a smaller-diameter

Re: [Emc-users] CAD for LinuxCNC

On 24 Jul 2018, at 07:33, Chris Albertson wrote: > What I want and am looking for is a kind of conversational system > where I can walk up to the mill and use it for something simple with no > need for g-code. I'm going back and forth on what would be best. > I use a library of

Re: [Emc-users] CAD for LinuxCNC

I write a lot of native G-Code programs, often using my library of G-Code routines, and coding directly using a text editor on the Linux machine. As for CAD programs, I'm running Vectric VCarve Pro, on a W7 PC. I have slightly customised the post-processor, so VCarve gives me a ready-to-use

Re: [Emc-users] no news any more?

I have not seen anything either, here in the UK. Maybe everyone is either making BBQs or watching the World Cup football? In my opinion, there is too much danger in a BBQ, and I never understood football anyway, so I'm painting walls outside, and machining compound angles in aluminium blocks

Re: [Emc-users] OT: Wire feeder on screw forging machine

There are quite a few videos on youTube showing simple wire feed mechanisms using an Arduino as a controller. Searching for 'wire cutter Arduino' gives a list. You may get some good ideas there, for simple feeding mechanisms. Whether you need an Arduino is another matter, but the mechanics are

Re: [Emc-users] Got LCNC into a corner, painted in you might say

Gene, Knowing you have more experience of tricky tasks than I have, and seeing not much response to your question, I offer the following observations: I have forgotten the exact reason you are dealing, in places, with the locations of the co-ordinate systems (#5222 etc), but my inclination is

Re: [Emc-users] Spindle Motors

On 26 May 2018, at 16:13, Jon Elson wrote: >> > That motor can produce rated torque down to near zero speed. But, a belt > reduction INCREASES torque as you lower spindle speed. In some cases like > heavy fly cutting, face mills, boring, and drilling with large diameter > drills, you need

Re: [Emc-users] Home switches.

> > And that brings up the third question about a 4th axis. If you have one, do > you tend to put it on the left just like a lathe spindle or on the right? > Any reason for the preference? Often there are tool changers on the left so > it makes more sense to have the 4th on the right. My mill

Re: [Emc-users] Very low backlash ballscrews [Was: Re: How does this work?

I agree: > It is not a quarter as hard to repack a ball nut as a lot of people make it > out to be. > If you can repack the bearings on your bicycle, you will have no problem. > You can probably find good general instructions for repacking a ball nut in > the steering section of your autos

[Emc-users] Simplifying Axis display

I find the as-supplied display of co-ordinates in Axis much more cluttered than in early versions, and would like to simplify it considerably. In fact, I'd like it to show just this info: current X, Y Z and A co-ordinates current velocity I can't see an obvious or easy way to do this. Is there

Re: [Emc-users] (no subject)

On 8 Apr 2018, at 06:05, Chris Albertson wrote: > > Is there a Linux based tool chain? The part I don't see is how to convert > Gerber files to g-code files. The video mentions CopperCAM, but the CopperCAM site says it takes in some Gerber files, but doesn't give enough details of the

Re: [Emc-users] Making a steper pulse generator, would like comments

On 31 Mar 2018, at 04:20, Gene Heskett wrote: > > Just one question? Can you build this for less than you can buy it from > Mesa? Or Pico? If you time is worth a buck an hour, its a slim chance > of yes. Very slim. Otherwise get it from a supplier that supports us. +1 for that. I'm all for

Re: [Emc-users] G61, G61.1, and M0

First, the joint 0 following error is related to your ini settings, and the max speed or acceleration are set at too great a value for the axis generating the error. At first sight, the code looks ok, but I would try making # a global variable #<_cnt> G10 L20 P1 might work better, as

Re: [Emc-users] Glueing a pulley to a shaft.

Last time I spoke to the technical chaps at Loctite, they emphasised that mating components should be a light press fit, or at least an interference fit, because Loctite works at the molecular level, across the shear plane between the surfaces. That arrangement provides maximum strength.

Re: [Emc-users] Where are you getting R8 square collets for driving taps?

On 7 Mar 2018, at 06:28, Erik Christiansen wrote: > On 07.03.18 00:58, Gene Heskett wrote: >> And the grub screws stayed tight? > I made a whole tapping system for my pillar tool, for small taps, using the 4-grubscrew technique, and I have used it successfully for years. I only use it for

Re: [Emc-users] Need to select a timing belt type and size

On 18 Feb 2018, at 23:53, Chris Albertson wrote: > So I need to select a belt type and size. My initial guess at this a the > GT2, 3mm pitch and 9mm wide. > I am planning to renew my belts after some 13 years fairly heavy use (ballscrews now worn), so I too have been pondering this problem.

Re: [Emc-users] non-contact position sensors, surprisingly good performance.

On 16 Feb 2018, at 04:11, Gene Heskett wrote: > On Thursday 15 February 2018 22:23:34 Chris Albertson wrote: > >> I'm slowing getting set up to test one of those sensors. I just 3d >> printed a holder. The darn thing uses M12x1 threads so I had to >> order a 12x1 tap 6 weeks from China and

Re: [Emc-users] 3D printed CNC conversion for Sieg X2

On 11 Feb 2018, at 12:29, Gene Heskett wrote: > > Another reason to get one of those 3d printer things is that I don't have > a thread protector for the 2.25x8 spindle on my Sheldon. I've considered > making one out of alu, but putting that in contact with alu doesn't seem > like a Good

Re: [Emc-users] possibly silly code question

On 30 Jan 2018, at 22:58, Gene Heskett wrote: > I'll use a bit of this code to locate the backplate centerhole, then the > data logged by this, to drill/enlarge the boltholes in this backplate > just enough bigger that I can skid it around to as close to zero run-out > as I can get it. >

Re: [Emc-users] Question re the 3 jaw on this Sheldon

On 28 Jan 2018, at 07:00, Gene Heskett wrote: > On Saturday 27 January 2018 22:03:33 Eric Keller wrote: > >> Bison maybe? Currently considered to be pretty good, and priced >> accordingly. > > So I've noted already. > > All the Bisons I see today have a brass logo button inlaid in the face.

Re: [Emc-users] G76 tool path not behaving as expected (bad code or bad expectations?)

On 16 Jan 2018, at 23:16, tom-...@bgp.nu wrote: > We are tying to cut some internal Acme threads on our lathe. We have an > internal Acme 8-pitch single point tool. From the edge of the backside of > tool to the tip of the cutting point is 0.490”. The major diameter of our > hole to

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