Re: [Emc-users] Technique question
On Fri, 4 Jul 2014 19:45:31 -0500, you wrote: That would be large enough to have some physical instability at high speed. You could also have room to put a number of pickups around it and gain resolution by reading them sequentially. I have an encoder disk made of tufnel on my lathe - it's around 7 diameter 4mm thick. No problems at 4000 rpm. I only made it as I couldn't get hold of a low count encoder at a reasonable price and I had some lying around along with dozens of slotted opto switches. Nice thing is it's easy to machine, did the 120 encoder slots with a new disposable 3mm HSS 2 flute endmill in one pass, then the center and mounting holes and finally cut it out all with the same tool. The index slot is twice the length of the others and that opto is mounted further in than the A B ones. Steve Blackmore -- -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
Send it back, get a refund Alex - Original Message - From: Marius Liebenberg mar...@mastercut.co.za To: emc-users@lists.sourceforge.net Sent: Friday, July 04, 2014 11:58 AM Subject: Re: [Emc-users] mach3 Your Google is broken On 2014-07-03 21:54, a k wrote: hi i use google to fine who make mach3 and found a lot noise. who actually make mach3 and is there web link to them ? thanks aram -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
On Saturday 05 July 2014 05:51:58 Alex Joni did opine And Gene did reply: Send it back, get a refund Alex My thoughts exactly, Aram, Linuxcnc can I believe do anything Mach3 can do. First, it only runs on windows, and thats strikes one, two and three you're out right there. 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 US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
Hi Gene, I think that Alex meant to send back the broken Google, not Mach3 ;) Cheers, Philipp On 05.07.2014 13:09, Gene Heskett wrote: On Saturday 05 July 2014 05:51:58 Alex Joni did opine And Gene did reply: Send it back, get a refund Alex My thoughts exactly, Aram, Linuxcnc can I believe do anything Mach3 can do. First, it only runs on windows, and thats strikes one, two and three you're out right there. Cheers, Gene Heskett signature.asc Description: OpenPGP digital signature -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] debounce docs?
Gene, does this make better sense now? http://linuxcnc.org/docs/html/man/man9/debounce.9.html JT On 7/2/2014 9:47 AM, Gene Heskett wrote: On Wednesday 02 July 2014 10:05:09 Gene Heskett did opine And Gene did reply: On Wednesday 02 July 2014 08:40:07 andy pugh did opine And Gene did reply: On 2 July 2014 06:00, Gene Heskett ghesk...@wdtv.com wrote: But that manpage is so concise its not giving all the details I need to process it make it work. A single instance of debounce can have many input/output pairs, but only one debounce time. So, if you want two debounces with the same debounce time use size=1 If you want two debounces with different debounce times use size=1,1 I think you meant loadrt debounce cfg=2 for debounce with 2 pair of i/o's with the same timing, correct? And they would be addressed as debounce.0.0.in, debounce.0.0.out, debounce.0.1.in, debounce.0.1.out, and a single setp N(in base_thread ticks) debounce.0.delay? I don't see any reason to set 2 different delays just to gobble up noise. The cable is tiny zip cord, twisted about a turn per inch, no connection to anything but the switches terminal, is about 8 feet long by the time it gets to the BOB, so I can't imagine any noise pulse short of a nuclear EMP lasting longer than 20 base-threads, or about .5 millisecond. I just put the above in its hal file. Barring a power failure its still sitting out there where it stopped. So recovery s/b an MDI move of g0x0.000 y0.000 z0.000 file-quit linuxcnc -l enable set home flag on all 4 axis's (there's a rotary table not plugged in) add 3 thou to finished depth in code file, brass is warped reload file run from line to finish the job. Thanks Andy. Cheers, Gene Heskett And its running again, close enough it is not making swarf as it recuts that part of the final cutout groove it had already done. VBSEG here! Now, if I just had a 25k rpm spindle, we could get on with this, but a .03125 mill, digging .0015 per pass at 2500 revs demands a 1.7 feedrate else teeny little snap. It will be a while getting finished. 13 minutes/pass, 20 passes. I have GOT to do something about the spindle speed... Cheers, Gene Heskett -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
On Saturday 05 July 2014 07:28:02 Philipp Burch did opine And Gene did reply: Hi Gene, I think that Alex meant to send back the broken Google, not Mach3 ;) Cheers, Philipp Chuckle. But either way, the send it back was good advice. Google seems to be playing with its search results=broken google IMO. 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 US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
Not sure what Aram is looking for but why is there so many catty remarks and so much sarcasm. I can think of more than one reason to explore a different system. If you just want to put someone down why don't you pick a target that will fight back. All I see from Aram is questions about what problems he is having and then attempted positive comments to some of the negative response he gets. People should either not engage if they are not inclined to help or help. Just sayin Stuart On Jul 5, 2014 6:32 AM, Philipp Burch p...@hb9etc.ch wrote: Hi Gene, I think that Alex meant to send back the broken Google, not Mach3 ;) Cheers, Philipp On 05.07.2014 13:09, Gene Heskett wrote: On Saturday 05 July 2014 05:51:58 Alex Joni did opine And Gene did reply: Send it back, get a refund Alex My thoughts exactly, Aram, Linuxcnc can I believe do anything Mach3 can do. First, it only runs on windows, and thats strikes one, two and three you're out right there. Cheers, Gene Heskett -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
Spot on Philipp, I don't have anything against Mach3. I use one* every other day :) Joke aside, Mach3 shares some codebase with LinuxCNC (early days, when LinuxCNC was still EMC - and public domain). Other than that I have no real interest in it ... Cheers, Alex * http://lmgtfy.com/?q=mach3+gillette - Original Message - From: Philipp Burch p...@hb9etc.ch To: emc-users@lists.sourceforge.net Sent: Saturday, July 05, 2014 2:28 PM Subject: Re: [Emc-users] mach3 Hi Gene, I think that Alex meant to send back the broken Google, not Mach3 ;) Cheers, Philipp On 05.07.2014 13:09, Gene Heskett wrote: On Saturday 05 July 2014 05:51:58 Alex Joni did opine And Gene did reply: Send it back, get a refund Alex My thoughts exactly, Aram, Linuxcnc can I believe do anything Mach3 can do. First, it only runs on windows, and thats strikes one, two and three you're out right there. Cheers, Gene Heskett -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] debounce docs?
On Saturday 05 July 2014 08:11:12 John Thornton did opine And Gene did reply: Gene, does this make better sense now? http://linuxcnc.org/docs/html/man/man9/debounce.9.html JT Yes, quite a bit more sense. I might add that each ,[size] creates a new group just to say it explicitly. But with this wording, its should much easier to decipher and use. I put just one group of 2 in the mill's hal for the limit switches and have had no further problems with false trips in around 3 days of running. I setp'd the delay to 20, or about 1/2 a millisecond. Plenty fast enough IMO. Home switches OTOH ought to be in shielded cable and instant. The way the limit switches are mounted and operated, there is a safety over travel of about 3/8 before the balls would start falling out. On 7/2/2014 9:47 AM, Gene Heskett wrote: On Wednesday 02 July 2014 10:05:09 Gene Heskett did opine And Gene did reply: On Wednesday 02 July 2014 08:40:07 andy pugh did opine And Gene did reply: On 2 July 2014 06:00, Gene Heskett ghesk...@wdtv.com wrote: But that manpage is so concise its not giving all the details I need to process it make it work. A single instance of debounce can have many input/output pairs, but only one debounce time. So, if you want two debounces with the same debounce time use size=1 If you want two debounces with different debounce times use size=1,1 I think you meant loadrt debounce cfg=2 for debounce with 2 pair of i/o's with the same timing, correct? And they would be addressed as debounce.0.0.in, debounce.0.0.out, debounce.0.1.in, debounce.0.1.out, and a single setp N(in base_thread ticks) debounce.0.delay? I don't see any reason to set 2 different delays just to gobble up noise. The cable is tiny zip cord, twisted about a turn per inch, no connection to anything but the switches terminal, is about 8 feet long by the time it gets to the BOB, so I can't imagine any noise pulse short of a nuclear EMP lasting longer than 20 base-threads, or about .5 millisecond. I just put the above in its hal file. Barring a power failure its still sitting out there where it stopped. So recovery s/b an MDI move of g0x0.000 y0.000 z0.000 file-quit linuxcnc -l enable set home flag on all 4 axis's (there's a rotary table not plugged in) add 3 thou to finished depth in code file, brass is warped reload file run from line to finish the job. Thanks Andy. Cheers, Gene Heskett And its running again, close enough it is not making swarf as it recuts that part of the final cutout groove it had already done. VBSEG here! Now, if I just had a 25k rpm spindle, we could get on with this, but a .03125 mill, digging .0015 per pass at 2500 revs demands a 1.7 feedrate else teeny little snap. It will be a while getting finished. 13 minutes/pass, 20 passes. I have GOT to do something about the spindle speed... Cheers, Gene Heskett --- --- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users 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 US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] debounce docs?
On Saturday 05 July 2014 08:11:12 John Thornton did opine And Gene did reply: Gene, does this make better sense now? http://linuxcnc.org/docs/html/man/man9/debounce.9.html JT I forgot to say thank you John, I'll take 30 lashes with a wet noodle. ;) 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 US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Help requested - stepper drivers.
Hi all; Hope this question is considered on-topic, or at least not too far off. I'm doing another CNC conversion - my largest yet. G0704 (BF20) style mill, and I'm wondering about stepper drivers. (Have a Mesa 5i25/7i76 combo; maybe my next machine will be servo) I'm wondering about drivers - I have as spares a Gecko G540, some 48v 7.5a switching power supplies, a couple Gecko 3.5A drivers (the ones in the G540, but standalone) but wondering: 1) digital drivers, eg automationtechnologiesinc.com ones, are they worth the price? 2) China drivers look the same as 1); presumably the technology is the same, just name-badging; 3) Europeans seem to use smaller steppers than North Americans; is there much savings (e.g., power, heat) from using smaller steppers? I'd guess so. I'm in Canada, so shipping from the USA or China or Europe is about the same - expensive - so source location is not an issue. It does seem a shame to purchase new drivers and power supplies, but I might as well do this machine right. Thanks for any insights you might give. John A. Stewart. -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
On Saturday 05 July 2014 08:54:14 John Alexander Stewart did opine And Gene did reply: Hi all; Hope this question is considered on-topic, or at least not too far off. I'm doing another CNC conversion - my largest yet. G0704 (BF20) style mill, and I'm wondering about stepper drivers. (Have a Mesa 5i25/7i76 combo; maybe my next machine will be servo) I'm wondering about drivers - I have as spares a Gecko G540, some 48v 7.5a switching power supplies, a couple Gecko 3.5A drivers (the ones in the G540, but standalone) but wondering: 1) digital drivers, eg automationtechnologiesinc.com ones, are they worth the price? 2) China drivers look the same as 1); presumably the technology is the same, just name-badging; 3) Europeans seem to use smaller steppers than North Americans; is there much savings (e.g., power, heat) from using smaller steppers? I'd guess so. I'm in Canada, so shipping from the USA or China or Europe is about the same - expensive - so source location is not an issue. It does seem a shame to purchase new drivers and power supplies, but I might as well do this machine right. Thanks for any insights you might give. John A. Stewart. John, I am currently using 6 of the 2M542 Chinese drivers, 50 volt rated, 4.2 amps. They also make a larger 80 volt, more amps version. The 2M542's can be had at around a $50 bill each on fleabay, and they have now outlasted their money in other units burned up. I bought 7 at the time so I'd have a spare, 3 years later the 7nth is still in the box in the drawer beside the lathe. Running both double stack (262 oz) and triple stack (425 oz) Nema 23's with them. My supplies aren't really at the 50 volt limit, one at 28, one at around 38. I even accidentally crow barred one, it tripped off, needed a power down reset, but no damage. Not recommended below 24 volts as that raises the operating temperature. Good drivers IMO. My $0.02. :) 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 US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
Lester, What do you mean by hacked versions? The original Mach3 prior to the latest secure activation scheme was not copy protected. You could buy a copy and get the license key and duplicate it a thousand times if you wanted to. The only recourse that Mach3 had was to prevent it from being updated with the copied license key (If they could even do that..) I purchased several Mach3 license keys for various installations, but that was years ago. Do you mean that the new activated Mach3 software has been hacked? That would not surprise me. There are people out there who have become very good at removing activations. Dave On 7/3/2014 4:13 PM, Lester Caine wrote: On 03/07/14 20:54, a k wrote: hi i use google to fine who make mach3 and found a lot noise. who actually make mach3 and is there web link to them ? There is only one manufacturer who is Newfangled http://www.machsupport.com/ There are a growing number of hacked versions floating around :( -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
Hi, leadshine is a china brand of good quality stepper driver (automationlogic seem to be leadshine model DM856 for example, there is a lot of re-branding within leadshine drives) I like the digital version (DM series, you can tune out some resonance, work well). I don't know much about the standard serie (M series) BTW, nema24 motor is a quite interesting for the size / torque they propose. Claude Le 05.07.2014 14:54, John Alexander Stewart a écrit : Hi all; Hope this question is considered on-topic, or at least not too far off. I'm doing another CNC conversion - my largest yet. G0704 (BF20) style mill, and I'm wondering about stepper drivers. (Have a Mesa 5i25/7i76 combo; maybe my next machine will be servo) I'm wondering about drivers - I have as spares a Gecko G540, some 48v 7.5a switching power supplies, a couple Gecko 3.5A drivers (the ones in the G540, but standalone) but wondering: 1) digital drivers, eg automationtechnologiesinc.com ones, are they worth the price? 2) China drivers look the same as 1); presumably the technology is the same, just name-badging; 3) Europeans seem to use smaller steppers than North Americans; is there much savings (e.g., power, heat) from using smaller steppers? I'd guess so. I'm in Canada, so shipping from the USA or China or Europe is about the same - expensive - so source location is not an issue. It does seem a shame to purchase new drivers and power supplies, but I might as well do this machine right. Thanks for any insights you might give. John A. Stewart. -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
Aram, Mach3 works when used within its limits. But if you want to do any customization of Mach3 you need to know its limits. Get on the Forum and do some research and don't think you can just work around the well known issues. http://www.machsupport.com/forum/index.php?board=1.0 Dave On 7/3/2014 3:54 PM, a k wrote: hi i use google to fine who make mach3 and found a lot noise. who actually make mach3 and is there web link to them ? thanks aram -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
I don't know about the newer digital drives from Automation Technologies but I have my gantry router set up with these: http://www.automationtechnologiesinc.com/products-page/stepper-nema23-3-axis-kits/cnc-stepper-motor-3-axis-kit-2. They have performed flawlessly for nearly 5 years driving 2 TPI screws on my router, sometimes running for 8 hrs in +90 F conditions. I have been curious about the closed loop systems A-T offers but haven't found any feedback from users yet: http://www.automationtechnologiesinc.com/products-page/nema23-closed-loop-stepper-motor-system-hybrid-servo-kit/nema23-282-oz-in-closed-loop-stepper-motors-3-axis-cnc-kit-110vac220vac-2 Does anyone have any experience with these? +++ Anyone who believes exponential growth can go on forever in a finite world is either a madman or an economist. -Kenneth Boulding, economist “How unfortunate that the Earth’s first intelligent social animal is a tribal carnivore” -E.O. Wilson, sociobiologist From: John Alexander Stewart ivatt...@gmail.com To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Saturday, July 5, 2014 7:54 AM Subject: [Emc-users] Help requested - stepper drivers. Hi all; Hope this question is considered on-topic, or at least not too far off. I'm doing another CNC conversion - my largest yet. G0704 (BF20) style mill, and I'm wondering about stepper drivers. (Have a Mesa 5i25/7i76 combo; maybe my next machine will be servo) I'm wondering about drivers - I have as spares a Gecko G540, some 48v 7.5a switching power supplies, a couple Gecko 3.5A drivers (the ones in the G540, but standalone) but wondering: 1) digital drivers, eg automationtechnologiesinc.com ones, are they worth the price? 2) China drivers look the same as 1); presumably the technology is the same, just name-badging; 3) Europeans seem to use smaller steppers than North Americans; is there much savings (e.g., power, heat) from using smaller steppers? I'd guess so. I'm in Canada, so shipping from the USA or China or Europe is about the same - expensive - so source location is not an issue. It does seem a shame to purchase new drivers and power supplies, but I might as well do this machine right. Thanks for any insights you might give. John A. Stewart. -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
I have no horse in his race but found this thread amusing until now. On 07/05/2014 05:23 AM, Stuart Stevenson wrote: Not sure what Aram is looking for but why is there so many catty remarks and so much sarcasm. I can think of more than one reason to explore a different system. When you are exploring a different system then ask questions about it on related forums. If you just want to put someone down why don't you pick a target that will You need to go read email exchange between some members of this list and target individual where he was extremely rude IMO [1] not very long ago. Only then you'll understand the reaction to his latest silly question about a product that has nothing to do with LinuxCNC. [1] That kind of experience would keep me quiet for a year before asking for help again. I understand there is a language barrier but that exchange was not about problem with understanding English language. It was about ignorance after they tried to help him and people got tired of it. This reminds me of mailing lists rule no. #1: don't offend people that (try to) help for free. And there is this: I've done a lot of linux support in early days mailing lists and news groups when there were only a handful of sites with anything on Linux and there was only one printed collection of messages from the Linux news group in first Linux Bible. It was understandable that software developers needed help to get systems up and start writing or porting applications to Linux but they lacked hardware or system administrative skills that some of us were able to provide. These days people are too _damn_ lazy to search on one of numerous search engines before they send a request for help on a mailing list. That's why we see so many of the same (newbie) questions over and over again. Searching on the Internet requires some skills too but this mailing list is not appropriate place for learning it IMO. fight back. All I see from Aram is questions about what problems he is having and then attempted positive comments to some of the negative response he gets. People should either not engage if they are not inclined to help or help. Just sayin Stuart Your new target, -- Rafael -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
On Saturday 05 July 2014 12:06:33 Claude Froidevaux did opine And Gene did reply: Hi, leadshine is a china brand of good quality stepper driver (automationlogic seem to be leadshine model DM856 for example, there is a lot of re-branding within leadshine drives) I like the digital version (DM series, you can tune out some resonance, work well). I don't know much about the standard serie (M series) Responds well to the alternating stack of rubber and fender washers, stacked about 2 long on the rear shaft. BTW, nema24 motor is a quite interesting for the size / torque they propose. Claude Those I have not seen, link please? Thanks Claude 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 US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
Rafael, I also don't find this thread amusing. I don't consider anyone a target. Sorry, no catty remarks from me. Thanks Stuart On Jul 5, 2014 11:32 AM, Rafael Skodlar ra...@linwin.com wrote: I have no horse in his race but found this thread amusing until now. On 07/05/2014 05:23 AM, Stuart Stevenson wrote: Not sure what Aram is looking for but why is there so many catty remarks and so much sarcasm. I can think of more than one reason to explore a different system. When you are exploring a different system then ask questions about it on related forums. If you just want to put someone down why don't you pick a target that will You need to go read email exchange between some members of this list and target individual where he was extremely rude IMO [1] not very long ago. Only then you'll understand the reaction to his latest silly question about a product that has nothing to do with LinuxCNC. [1] That kind of experience would keep me quiet for a year before asking for help again. I understand there is a language barrier but that exchange was not about problem with understanding English language. It was about ignorance after they tried to help him and people got tired of it. This reminds me of mailing lists rule no. #1: don't offend people that (try to) help for free. And there is this: I've done a lot of linux support in early days mailing lists and news groups when there were only a handful of sites with anything on Linux and there was only one printed collection of messages from the Linux news group in first Linux Bible. It was understandable that software developers needed help to get systems up and start writing or porting applications to Linux but they lacked hardware or system administrative skills that some of us were able to provide. These days people are too _damn_ lazy to search on one of numerous search engines before they send a request for help on a mailing list. That's why we see so many of the same (newbie) questions over and over again. Searching on the Internet requires some skills too but this mailing list is not appropriate place for learning it IMO. fight back. All I see from Aram is questions about what problems he is having and then attempted positive comments to some of the negative response he gets. People should either not engage if they are not inclined to help or help. Just sayin Stuart Your new target, -- Rafael -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
On 05/07/14 17:25, Dave Cole wrote: That would not surprise me. There are people out there who have become very good at removing activations. There are site 'selling' Mach3 below the cost of a licence. Some of the licences are simply copies, others are 'hacked' keys. Yes you only need a 'copy' of a key to unlock mach3 but there are some keys which will not work properly with current downloads of Mach3! The original question was about the real download site, and it does Google no good that they actually provide links to sites which are not legal. At least now they are being forced to take more responsibility for invalid data, but personally I don't find Google a lot of use UNTIL you know that what you are looking at is legal ... -- Lester Caine - G8HFL - Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk Rainbow Digital Media - http://rainbowdigitalmedia.co.uk -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
On 7/5/2014 12:30 PM, Rafael Skodlar wrote: When you are exploring a different system then ask questions about it on related forums. Except that he said that he could not find the appropriate forum and he was asking for direction. That seems reasonable to me. You need to go read email exchange between some members of this list and target individual where he was extremely rude IMO [1] not very long ago. I'm certain that he is aware of the feelings and anger he raised on this email list. It happened, its over. From my experience, sarcasm is nearly impossible to understand if your native language is not English. So chances are that a lot of the catty remarks only resulted in confusion. Dave -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
There are site 'selling' Mach3 below the cost of a licence. That's a new low. :-( Dave On 7/5/2014 3:53 PM, Lester Caine wrote: On 05/07/14 17:25, Dave Cole wrote: That would not surprise me. There are people out there who have become very good at removing activations. There are site 'selling' Mach3 below the cost of a licence. Some of the licences are simply copies, others are 'hacked' keys. Yes you only need a 'copy' of a key to unlock mach3 but there are some keys which will not work properly with current downloads of Mach3! The original question was about the real download site, and it does Google no good that they actually provide links to sites which are not legal. At least now they are being forced to take more responsibility for invalid data, but personally I don't find Google a lot of use UNTIL you know that what you are looking at is legal ... -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
On 5 Jul 2014, at 13:54, John Alexander Stewart wrote: Hi all; Hope this question is considered on-topic, or at least not too far off. I'm doing another CNC conversion - my largest yet. G0704 (BF20) style mill, and I'm wondering about stepper drivers. (Have a Mesa 5i25/7i76 combo; maybe my next machine will be servo) I'm wondering about drivers - I have as spares a Gecko G540, some 48v 7.5a switching power supplies, a couple Gecko 3.5A drivers (the ones in the G540, but standalone) but wondering: 1) digital drivers, eg automationtechnologiesinc.com ones, are they worth the price? 2) China drivers look the same as 1); presumably the technology is the same, just name-badging; 3) Europeans seem to use smaller steppers than North Americans; is there much savings (e.g., power, heat) from using smaller steppers? I'd guess so. Not necessarily. I'm using 600NM NEMA 34 triple stack steppers, with Gecko 201s running at 78volts. PSU is based on two toroidal transformers, giving up to 10A at 80v for up to 4 steppers. Over current and over voltage protection, with soft start - overkill really. That size of stepper can each provide the equivalent of 1/4 horsepower, if my rough calculations are correct. That should be enough for a mill up to the size of a Bridgeport. I just don't believe in trying to trim the size or power of a stepper to save a few pounds/dollars. I'd rather over-spec slightly in the knowledge that I have power in hand. Marcus I'm in Canada, so shipping from the USA or China or Europe is about the same - expensive - so source location is not an issue. It does seem a shame to purchase new drivers and power supplies, but I might as well do this machine right. Thanks for any insights you might give. John A. Stewart. -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
On 5 July 2014 22:14, Marcus Bowman marcus.bow...@visible.eclipse.co.uk wrote: I just don't believe in trying to trim the size or power of a stepper to save a few pounds/dollars. I'd rather over-spec slightly in the knowledge that I have power in hand. It isn't necessarily that simple, though. It seems that the smaller steppers typically spin faster. On my mill/lathe the shortest, weakest stepper is actually the one that stalls least frequently. It is the X of the lathe, and that does generally need less force than the Z, though. Once you bring gear ratios into the system you can end up with a small stepper running at high rpm being more suitable than a larger, higher-torque but lower-speed/higher inductance one. However, if I was building a stepper machine I think I would be looking carefully at the hybrid systems: http://www.ebay.co.uk/itm/301181761480 -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
Andy, Marcus, Claude, Gene; Thanks for the feedback and the link. I logged back on to say that I had purchased some of those DM856 controllers, enough for my 4 axis mill build, plus one spare, just in case. I do have a larger lathe that I'm trying to get myself to CNC - an Emco Compact-8, and those hybrid drives seem really interesting… My little Unimat SL- CNC job might have to be put out to pasture when all is completed. Thanks all; JohnS. -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
On Saturday 05 July 2014 19:08:34 John Alexander Stewart did opine And Gene did reply: Andy, Marcus, Claude, Gene; Thanks for the feedback and the link. I logged back on to say that I had purchased some of those DM856 controllers, enough for my 4 axis mill build, plus one spare, just in case. I do have a larger lathe that I'm trying to get myself to CNC - an Emco Compact-8, and those hybrid drives seem really interesting… My little Unimat SL- CNC job might have to be put out to pasture when all is completed. Thanks all; JohnS. I am glad you found the info useful John. Question, did you have the unimat equipt with a spindle encoder so it is capable of going a G33.1 rigid tap operation? Or a g76 threading operation? Both of those are handier than sliced bread. My hal file is a monster, but I have a 7x12 doing that now, in a peck loop with a wrapper script I've written, in GCode of course. I mount the tap in a chuck on the tool post. 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 US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
Hi I can see that some people get obsession for FREE thing like a free help. If it is FREE , one free to do everything. Why?--- because it is FREE. No rule no restriction because it is FREE. One remark – you got what you paid for--- Possible talk a lot about FREE thing ( google.com is FREE – so/and ….etc.) Thursday I did call to NIST and found the person that originally put together EMC2. It was interesting to talk to him. One my question was—why none of major educational institution in the USA – like MIT etc—does not put EMC/EMC2 into their program and offer – class online etc ? different class for different level/need of student. The answer was – it is good question—it is very good question. Need to wait for fall to find right people in colleges/university to ask. If school like MIT will offer emc2 class, that will remove many –(newbie) from this list for sure. aram On Sat, Jul 5, 2014 at 1:05 PM, Dave Cole linuxcncro...@gmail.com wrote: There are site 'selling' Mach3 below the cost of a licence. That's a new low. :-( Dave On 7/5/2014 3:53 PM, Lester Caine wrote: On 05/07/14 17:25, Dave Cole wrote: That would not surprise me. There are people out there who have become very good at removing activations. There are site 'selling' Mach3 below the cost of a licence. Some of the licences are simply copies, others are 'hacked' keys. Yes you only need a 'copy' of a key to unlock mach3 but there are some keys which will not work properly with current downloads of Mach3! The original question was about the real download site, and it does Google no good that they actually provide links to sites which are not legal. At least now they are being forced to take more responsibility for invalid data, but personally I don't find Google a lot of use UNTIL you know that what you are looking at is legal ... -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] mach3
On Saturday 05 July 2014 20:05:56 a k did opine And Gene did reply: Hi I can see that some people get obsession for FREE thing like a free help. If it is FREE , one free to do everything. Why?--- because it is FREE. No rule no restriction because it is FREE. One remark – you got what you paid for--- Possible talk a lot about FREE thing ( google.com is FREE – so/and ….etc.) Thursday I did call to NIST and found the person that originally put together EMC2. It was interesting to talk to him. One my question was—why none of major educational institution in the USA – like MIT etc—does not put EMC/EMC2 into their program and offer – class online etc ? different class for different level/need of student. The answer was – it is good question—it is very good question. Need to wait for fall to find right people in colleges/university to ask. If school like MIT will offer emc2 class, that will remove many –(newbie) from this list for sure. aram Welcome Aram in case my previous responses weren't all that encouraging. And free as in zero cost is not a major consideration to me, its far more important that of these two lists, the huge majority of the coders who make it work are right here to answer your questions. They have, and continue to share their knowledge with the old fart that I am. Legit problems reported are generally addressed by a fresh download in 48 hours or less. Compare that to getting a straight answer out of the Redmond monolith. That would be nice, as they would not be so much a newbie when they arrive at this list. ;-) But they will arrive here eventually. I was one of those myself, most of a decade back. Still am at times. :( But, I would also like to see it catch hold in the tech/vocational schools, which are often geared toward teaching troubled teens carpentry or auto mechanics or some other aspect of the workplace they will have to live in in the future. Teaching them a MODERN trade, both in machining, and in creating the machines to do it with, strikes me as a win win situation for society as a whole, regardless of ethnicity and such. Heck, I could be interested in trying to teach such a class but I couldn't keep up a 5 days a week schedule at my age, 79, if the drive is 35 miles one way as it would be for the nearest such school around here. I could see a two year class for credit and potentially testing for accreditation if there is such a thing. ?? One Community College in Norfolk NE had such a program in the early '70's intended to generate a few C.E.T.'s, which I am one of. But I blew the prof away when I walked in cold and asked for the journeyman level test on the day they had announced as test day. And aced it, in about an hour of the 4 they gave to answer 125 multiple choice or draw it questions. None of his students had managed that even at the apprentice level in the 5 years he had been teaching it. I was then keeping one of Nebraska ETV's UHF transmitter sites running well. So I had plenty of what some would have called exotic experience, as klystron amplifiers are to most, some sort of black magic. That was 42 years ago. So ask away, someone here will be sure to have an opinion. 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 US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
On 7/5/2014 3:14 PM, Marcus Bowman wrote: Not necessarily. I'm using 600NM NEMA 34 triple stack steppers, with Gecko 201s running at 78volts. PSU is based on two toroidal transformers, giving up to 10A at 80v for up to 4 steppers. Over current and over voltage protection, with soft start - overkill really. That size of stepper can each provide the equivalent of 1/4 horsepower, if my rough calculations are correct. That should be enough for a mill up to the size of a Bridgeport. I just don't believe in trying to trim the size or power of a stepper to save a few pounds/dollars. I'd rather over-spec slightly in the knowledge that I have power in hand. I'm using 1600 oz/in steppers in place of 120 volt brush type DC servo motors. The steppers are about 1/3 the size of the servos yet have more torque at the same RPM the servos achieved their peak torque. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
John, If I can get the shop straightened up a bit in the next couple of days I will try to show a 00-90 being cut on the Derbyshire(tiny), the Griz 9x20 (middle size), and the Monarch 10EE (just right). Most people are more impressed with the 10EE making the tiny screw than they are with the smaller lathes. I guess it just looks out of scale. By the way, I can make a 000-120 (.034 dia) but I don't have a nut to test it with. I guess I could make a 000-120 tap and make a nut but that wouldn't prove that it is actually to spec. I thought about boring the thread but my attempts at making a boring bar with a .010 shank were pretty much a failure. I searched for a place to buy a few 00-120 nuts but the places that sell them like to move them in very large lots. Pretty cheap by the piece but what am I going to do with the other 999. Cecil Saturday 7-5-3014 JohnS said Now, I'd like to see Cecil's little watchmakers lathe do the 00-80 screws JohnS. -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help requested - stepper drivers.
On Saturday 05 July 2014 22:36:42 John Alexander Stewart did opine And Gene did reply: Hi Gene; No, my little Unimat is really just for show. I take it to exhibitions, and it moves around, but does not cut anything. I *could* take some of my spare parts and make it thread, but to be honest, it's one of the first ones, with a motor that is barely powerful enough to turn the spindle, so I don't think it'll be worth setting up to thread. I have turned some parts from Bronze on it, and it worked actually quite well, but that's about it. I could have turned these parts on my first CNC mill about 10x faster! (It's one of the first ones off the line - a cast iron Mark1 model, and has right handed feed screws, so was useless for manual machining, as everything went the wrong way compared to my other equipment) Humm, I think I borrowed one of those 45 years back, made a spindle nose plug that ran true in a .303 case neck, and trimmed about 3 thou off the outside of the neck so I could use mill 30-06 cases in a 303 barrel someone had rechambered for 30-06, and which I had rechambered for the P.O.Ackley version. Once I got the right sized bullet for that barrel it did nickel sized groups for the next 4000 rounds. Now, I'd like to see Cecil's little watchmakers lathe do the 00-80 screws! JohnS. That would indeed be a treat. I haven't tried that size on my 7x12, yet... 6-48's worked though. :) While I do use that 0-80 size frequently, I do it with commercial screws, taps and dies. However I have made quite a few 1/4-28 threads using G76. For #209M nipples for one of my BP rifles. Non-vented for use with Blackhorn 209 powder, which takes a tactical nuke to ignite it. Its very accurate stuff, IF you can get it lit. A #11 cap won't, and a vented 209 nipple won't, it takes the full power of a 209M shotgun primer in an unvented nipple to do it. Also quite expensive at $4 an oz in 10 oz containers. 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 US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
