Messages

2041

General Mach Discussion / Re: All settings gone awol

« on: June 28, 2007, 08:55:35 AM »

Ok just a quick follow up. Rock n roll - I found a backup on the memory stick I use to transport gcode between my office and workshop machines. Seems that sometimes I do walk through the day awake...

However, it seems that the latest version of Mach3 ignores limits override, both automatic and manual. Once it hits a limit there is no way to get it off again. So I've gone back to the previous version again and all is fine. Anyone else had this?

2042

General Mach Discussion / Re: All settings gone awol

« on: June 28, 2007, 03:45:54 AM »

Hi Brett - All the settings were in a new profile I'd created (in order to keep the default just in case) and yes all the defaults have been written to it by the upgrade. I noticed when Mach3 was installing it said words to the effect of "loading custom profile". Of course what it didn't say was "and I'm going to trash it - ha ha".

Hi Chip - Nice thought but I just looked and sadly no. Again strange cos during install it asked for the program group and I gave it the name according to the new version so now you've mentioned it I'd have expected it to  install to a different dir. but no.

Looks like I'm back to "first base" as I believe you chaps say another day wasted  one day I might actually be able to get back to work and mince some freakin wood.

2043

General Mach Discussion / Re: All settings gone awol

« on: June 27, 2007, 03:20:09 PM »

no and no

2044

General Mach Discussion / Re: All settings gone awol

« on: June 27, 2007, 03:06:54 PM »

Well hello there Brett - you trying to get back on my Christmas list then?

R1.84.002

2045

General Mach Discussion / All settings gone awol

« on: June 27, 2007, 02:14:57 PM »

To my regret I've just installed Mach3VersionR2.00.065.

So has anyone else done this to find that just about every setting has gone.  Motor tuning, ports n pins, homing and limits, spindle.  Everything.

Please tell me that all my old settings are stored away somewhere nice for me.

2046

General Mach Discussion / Re: about Z depth

« on: June 27, 2007, 01:21:57 PM »

This is surely exactly the same problem as faced by engravers and printed circuit board makers. How to follow an irregular surface whilst maintaining precise cut depth. Sounds like a job for a floating head to me.

2047

General Mach Discussion / Re: CV mode tuning

« on: June 26, 2007, 04:33:00 AM »

OK - I emailed Art with my questions and he's clarified the technicalities regards some of my issues with CV. He also pointed me at earlier threads. It seems http://www.artsoftcontrols.com/forum/index.php?topic=1724.0 is the nub.

Scott could have been speaking for me. The thread kinda runs out round about February this year and it's not clear to me whether there was any real resolution. Anyone?

2048

General Mach Discussion / Re: CV mode tuning

« on: June 25, 2007, 03:37:49 PM »

ah graham - guess it's been one of those days...

As I said in my OP - I know what CV is and I know where all the options are... but thanks anyway.

cheers

2049

General Mach Discussion / Re: Help needed finding stepper driver

« on: June 25, 2007, 02:59:41 PM »

thanks for the lesson on unipolar/bipolar...

I guess I've come to the end of what I can say. I havn't come accross any other driver for that price so maybe it's worth a go.

2050

General Mach Discussion / Re: Help needed finding stepper driver

« on: June 25, 2007, 12:48:13 PM »

Not sure what you mean by "one coil at a time" but anyway, I'm sure your motors appear fine at low revs (do you mean 10 revs/sec or 10 steps/sec by the way?).

Steppers develop torque in inverse proportion to their speed. I only ever use bipolar chopper drives and with these at least, anything around 20 times a motors rated voltage is normal - nay required (with LR drives this may not be the case - I don't actually know). When I first started building these things I remember experimenting with 2.1A 6V unipolars using an LR type driver and an AT power supply and at any useful speed the torque was useless.

regarding your Z moving slower, well maybe - depends how you choose to  gear it and whether you're cutting 2.5D or 3D.