Re: [Emc-users] gcmc - G-Code Meta Compiler
On 10/30/2013 7:06 AM, Bertho Stultiens wrote: The loops and conditionals provided by G-code are, well, archaic. The format is context-sensitive and uses line numbers to keep track. Moving things around in a G-code program is a pain. The reason for a context-free grammar is to make coding more flexible without having to think about line numbers. A paradigm that has proven to be very successful. That's why with languages which use line numbers, it's advisable to space them apart, if the language allows, so that additions can be slipped in without having to renumber the whole program. IIRC the usual practice with BASIC was to number lines by 10's. Such a language should also have a utility to automatically renumber a program, tracing through all jumps, loops and branches to ensure it's all right, and trapping any errors from jumps, loops and branches to non-existent line numbers. Once achieving a state where all of a program works, it's a good idea to do a renumber then continue work on a copy. If G-Code cannot handle gaps in its line numbers, then perhaps an editor could do so, then have a Save As runnable output function which automatically renumbers with a step of one and another option to save the editing version with the gaps? -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
On 10/31/2013 07:38 AM, Gregg Eshelman wrote: Once achieving a state where all of a program works, it's a good idea to do a renumber then continue work on a copy. If G-Code cannot handle gaps in its line numbers, then perhaps an editor could do so, then have a Save As runnable output function which automatically renumbers with a step of one and another option to save the editing version with the gaps? If you already are in need for a program to help you to fix a program, then why not fix the language in the first place? G-code has already evolved through time to support many more features than originally envisioned, but it still suffers from the the same archaic syntax. That was (and is) my objection. Even basic evolved into a (almost) context-free grammar, for the better or worse, in visual basic. Please note that you can write bad code in any language... I am not forcing anybody to change their habbits or preferences, only hoping to. I am trying to provide an alternative. Explaining why I want to provide an alternative seems a reasonable thing to do. -- Greetings Bertho (disclaimers are disclaimed) -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
On Thu, Oct 31, 2013 at 6:26 AM, Bertho Stultiens ber...@vagrearg.orgwrote: On 10/31/2013 07:38 AM, Gregg Eshelman wrote: Once achieving a state where all of a program works, it's a good idea to do a renumber then continue work on a copy. If G-Code cannot handle gaps in its line numbers, then perhaps an editor could do so, then have a Save As runnable output function which automatically renumbers with a step of one and another option to save the editing version with the gaps? If you already are in need for a program to help you to fix a program, then why not fix the language in the first place? G-code has already evolved through time to support many more features than originally envisioned, but it still suffers from the the same archaic syntax. That was (and is) my objection. Even basic evolved into a (almost) context-free grammar, for the better or worse, in visual basic. Please note that you can write bad code in any language... I am not forcing anybody to change their habbits or preferences, only hoping to. I am trying to provide an alternative. Explaining why I want to provide an alternative seems a reasonable thing to do. Guys: I don't understand this obsession with line (aka block or sequence) numbers in G-Code, e.g., instances of the N word. They are optional and exist for the benefit of the programmer / operator, not the interpreter. Use your favorite search engine to find examples of utilities which can add, remove, or renumber line numbers in G-Code programs. (Sorry, many are not free, but that's the way life is. Write your own if you feel the need. It's an easy exercise.) Note that O words are the proverbial horse of another color. Bertho, there is no need to dwell on the archaic syntax of G-Code. G-Code was invented long ago and will continue to live on given the installed base of machinery, design/control software, trained operators, and G-Code programs stored away for future use. Sure it's a conservative industry, but the emergence of CAD/CAM software means most professionals no longer generate G-Code by hand anyway. There is no need to dwell on the justification for providing an alternative, either. As my grandmother was fond of saying, the proof of the pudding is in the eating. Let's get on with finishing the pudding and let the CNC world decide if it likes the taste. If it does, then gcmc will be its own justification. If it doesn't, you'll still have a program which satisfies your needs and sensibilities. My guess is that some will like it, some won't. A long-ago friend liked to remind me, there's no accounting for taste. Just my 2-cents worth. Regards, Kent PS - Never forget the lesson taught by history. Esperanto was a perfect, easy-to-learn language with many desirable features and intended to promote peace and harmony in the world. Lingua Franca was a bastard, polyglot language which grew out of necessity to support growing commerce among countries surrounding the Mediterranean. Guess which one was consequential in world history. -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
On 10/31/2013 01:25 PM, Kent Reed wrote: There is no need to dwell on the justification for providing an alternative, either. As my grandmother was fond of saying, the proof of the pudding is in the eating. Let's get on with finishing the pudding and let the CNC world decide if it likes the taste. If it does, then gcmc will be its own justification. If it doesn't, you'll still have a program which satisfies your needs and sensibilities. My guess is that some will like it, some won't. A long-ago friend liked to remind me, there's no accounting for taste. Well said, thanks. -- Greetings Bertho (disclaimers are disclaimed) -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] 5I25+7I77 problems
I've been giving a little advice and help to a student retrofitting a mill in the Technology department machine shop. He has stripped out the old Delta control and has wired in a 7I77 connected to a 5I25. I sat down with him and went through pncconf, but when we got to actually trying to make things move, I discovered he didn't have any 24V field power wired up. Came back a few days later to make more progress. No luck. Here is the situation: 1. The 7I77 jumper W1 had been left in the default (left) position when 24V was applied to VFIELD. This caused CR15 and CR16 to light. 2. After removing VFIELD, moving W1 to the right, and reapplying VFIELD, all led's except CR3 are off. 3. Since CR1 was off, I checked the 5I25 jumpers, and found W1 up but W2 down. Moved W2 up also, still no CR1 lit on 7I77. 4. LinuxCNC obviously won't start successfully. Dmesg shows 5I25 found, registered, initialized, then dropped. Linuxcnc_debug.txt shows: Can not find -sec MOT -var MOT -num 1 Can not find -sec IO -var IO -num 1 Can not find -sec LINUXCNC -var NML_FILE -num 1 Can not find -sec EMC -var NML_FILE -num 1 These sound to me like ini/hal file problems, but ini and hal are straight out of pncconf, which seemed to run fine. So, I suspect I've got multiple problems, but I would very much appreciate help sorting them out. I haven't used the 5I25 and 7I77 before (just lots of time with the 7I43). Thanks, -- Ralph -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
On Thu, 2013-10-31 at 14:11 +0100, Bertho Stultiens wrote: On 10/31/2013 01:25 PM, Kent Reed wrote: There is no need to dwell on the justification for providing an alternative, either. As my grandmother was fond of saying, the proof of the pudding is in the eating. Let's get on with finishing the pudding and let the CNC world decide if it likes the taste. If it does, then gcmc will be its own justification. If it doesn't, you'll still have a program which satisfies your needs and sensibilities. My guess is that some will like it, some won't. A long-ago friend liked to remind me, there's no accounting for taste. Well said, thanks. Hi Bertho, From my standpoint what you have is a good start. Just to be picky ... my poor brain converts parses dodwell to dod .. well and and an underscore would fix that but probably screw up something. I hope that your syntax grows to understand the imperial system for those stuck in the middle ages. In addition the mil is also used as an angular measurement in artillery. Close to but not identical to a minute of angle. The conversion of 1 inch = 25.4 mm is correct only in the US as our ever knowing Congress defined it by law. AFIK the rest of the world doesn't round it off. Keep up the good work. Dave -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 5I25+7I77 problems
On 31 October 2013 14:54, Ralph Stirling ralph.stirl...@wallawalla.edu wrote: Can not find -sec MOT -var MOT -num 1 Can not find -sec IO -var IO -num 1 Can not find -sec LINUXCNC -var NML_FILE -num 1 Can not find -sec EMC -var NML_FILE -num 1 Annoyingly you always get those at the moment, and they are nothing to be concerned about. The next line, or dmesg might have a better clue to what is going on. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
On 31 October 2013 15:03, dave dengv...@charter.net wrote: The conversion of 1 inch = 25.4 mm is correct only in the US as our ever knowing Congress defined it by law. AFIK the rest of the world doesn't round it off. I seem to recall that the only countries where that would matter are Burma and Liberia. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
I always understood a mil to be a measure specifically for angular measurements. It is widely used by military all over the world. Many gun sights are calibrated in mils as a choice for better resolution. 1deg = 17.7mil. On 2013/10/31 06:29 PM, Kent Reed wrote: On Thu, Oct 31, 2013 at 11:52 AM, Bertho Stultiens ber...@vagrearg.orgwrote: On 10/31/2013 04:03 PM, dave wrote:... In addition the mil is also used as an angular measurement in artillery. Close to but not identical to a minute of angle. I learned 'mil' as a unit of length measure from my father but the machinist who took me under his wing when I was in graduate school tried to train me to say 'thou' (short for 'thousandth of an inch') both because of this conflict and because of the propensity for some to think they heard 'millimeter.' Editors in publishing houses usually didn't allow the word in engineering texts because 'thou' means 'you' to them. And you are seriously considering that your next canon is going to use G-code in the firing sequence??? :-) Well, at least this usage would be canon-ical. Regards, Kent PS - By international agreement the inch has been exactly 25.4 mm for more than 50 years. -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype: marius_d.liebenberg --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
For fun go and test yourself http://www.armystudyguide.com/flashcards/flashcards.php?cat=62qnum=7 On 2013/10/31 07:18 PM, Marius Liebenberg wrote: I always understood a mil to be a measure specifically for angular measurements. It is widely used by military all over the world. Many gun sights are calibrated in mils as a choice for better resolution. 1deg = 17.7mil. On 2013/10/31 06:29 PM, Kent Reed wrote: On Thu, Oct 31, 2013 at 11:52 AM, Bertho Stultiens ber...@vagrearg.orgwrote: On 10/31/2013 04:03 PM, dave wrote:... In addition the mil is also used as an angular measurement in artillery. Close to but not identical to a minute of angle. I learned 'mil' as a unit of length measure from my father but the machinist who took me under his wing when I was in graduate school tried to train me to say 'thou' (short for 'thousandth of an inch') both because of this conflict and because of the propensity for some to think they heard 'millimeter.' Editors in publishing houses usually didn't allow the word in engineering texts because 'thou' means 'you' to them. And you are seriously considering that your next canon is going to use G-code in the firing sequence??? :-) Well, at least this usage would be canon-ical. Regards, Kent PS - By international agreement the inch has been exactly 25.4 mm for more than 50 years. -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype: marius_d.liebenberg --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
On 31 October 2013 17:18, Marius Liebenberg mar...@mastercut.co.za wrote: I always understood a mil to be a measure specifically for angular measurements. It is widely used by military all over the world. Many gun sights are calibrated in mils as a choice for better resolution. 1deg = 17.7mil. Not 17.45? That would be a milli-radian. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
a mil dot on a gun sight is one milliradian. It works out to 1m offset at 1000m (or 1yd @ 1000yd if so inclined but metric is easier.) On Thu, Oct 31, 2013 at 1:52 PM, andy pugh bodge...@gmail.com wrote: On 31 October 2013 17:18, Marius Liebenberg mar...@mastercut.co.za wrote: I always understood a mil to be a measure specifically for angular measurements. It is widely used by military all over the world. Many gun sights are calibrated in mils as a choice for better resolution. 1deg = 17.7mil. Not 17.45? That would be a milli-radian. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary stage
Andy, Is this more like what you want? https://www.dropbox.com/s/7g46vdlz2svokn7/worm2.igs On Wed, Oct 30, 2013 at 2:47 PM, Stuart Stevenson stus...@gmail.com wrote: here is a more complete model for your enjoyment/critique https://www.dropbox.com/s/boyfgtldlw0kw8h/BallWormex2.igs On Wed, Oct 30, 2013 at 5:12 AM, Dave Caroline dave.thearchiv...@gmail.com wrote: Before anyone makes new rotaries, I have an interesting article from Summer school in electrical engineering, proceedings July 12 to 16 1948 BTH, The British Thomson-Houston Co Ltd Vibration and noise problems in engineering They were using an early spectrum analysis tool listening to the noise from a drive gear set made on a hobbing machine. http://www.collection.archivist.info/archive/proceedings/PR22/ see pages 60 61 and the table on page 66 The dominant error as you may see is regular error at tooth frequency A way I would put it is, if there were no accuracy errors there would be no sound to measure. Even the the measures they took to make the 360 master wheel still show up in the the result in table 1. The accuracy of a worm drive is also very important to telescope makers and to show the periodic error I mentioned earlier in this thread this page has some graphs http://www.pk3.org/Astro/index.htm?astrophoto_mount_errors.htm Just think how you are going to make your worm pitch match yout worm gear pcd to the accuracy needed. Hope it all goes well. Dave Caroline -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Addressee is the intended audience. If you are not the addressee then my consent is not given for you to read this email furthermore it is my wish you would close this without saving or reading, and cease and desist from saving or opening my private correspondence. Thank you for honoring my wish. Just for you NSA - think autointercourse terrorist suitcase bomb sarin hello -- Addressee is the intended audience. If you are not the addressee then my consent is not given for you to read this email furthermore it is my wish you would close this without saving or reading, and cease and desist from saving or opening my private correspondence. Thank you for honoring my wish. Just for you NSA - think autointercourse terrorist suitcase bomb sarin hello -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary stage
On 31 October 2013 22:29, Stuart Stevenson stus...@gmail.com wrote: Andy, Is this more like what you want? https://www.dropbox.com/s/7g46vdlz2svokn7/worm2.igs That is a lot more like the JHU version, and maybe that is why they did it that way. But I am still more interested in trying the enveloping worm version. It should have more balls in play, but the actual contact area might turn out to be lower. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary stage
Describe your enveloping worm so I can try to model it. On Oct 31, 2013 6:04 PM, andy pugh bodge...@gmail.com wrote: On 31 October 2013 22:29, Stuart Stevenson stus...@gmail.com wrote: Andy, Is this more like what you want? https://www.dropbox.com/s/7g46vdlz2svokn7/worm2.igs That is a lot more like the JHU version, and maybe that is why they did it that way. But I am still more interested in trying the enveloping worm version. It should have more balls in play, but the actual contact area might turn out to be lower. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary stage
On 31 October 2013 23:11, Stuart Stevenson stus...@gmail.com wrote: Describe your enveloping worm so I can try to model it. That is what we have been modelling earlier. (I am a bit confused) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rack and Pinion Ware?
I had almost talked the machine manufacturer into offering a helical rack setup as an upgrade. It had gone so far as a parts list and price quote. This was about 5 years ago, we decided to go with the standard replacement then. But now our machines are looking like they need it again, and we were going to go with the upgrade this time. Unfortunately the manufacturer decided they could not (would not) do the helical upgrade as an in the field modification (to much machining to make it work right.) These machines (we have 2) were new in 2006 and have had the racks changed twice and the pinions 4 times. - Original Message - From: andy pugh bodge...@gmail.com To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Thursday, October 31, 2013 12:36:44 PM Subject: Re: [Emc-users] Rack and Pinion Ware? On 31 October 2013 16:14, Todd Zuercher zuerc...@embarqmail.com wrote: Is there a rule of thum for judging the ware on a racks and pinion? The way my dad measured gear backlash (which is indicative of wear, especially if you know what it should be) was to run a length of solder through the meshing gears. On the big gears[1], they would use a thick solder. Helical gears will run smoother, if you are replacing everything. Double-helical biased sideways can be adjusted to have no backlash. [1] http://www.davidbrown.cn/products/girth%20gear%20large.jpg -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcmc - G-Code Meta Compiler
On Thu, 2013-10-31 at 12:29 -0400, Kent Reed wrote: On Thu, Oct 31, 2013 at 11:52 AM, Bertho Stultiens ber...@vagrearg.orgwrote: On 10/31/2013 04:03 PM, dave wrote:... In addition the mil is also used as an angular measurement in artillery. Close to but not identical to a minute of angle. I learned 'mil' as a unit of length measure from my father but the machinist who took me under his wing when I was in graduate school tried to train me to say 'thou' (short for 'thousandth of an inch') both because of this conflict and because of the propensity for some to think they heard 'millimeter.' Editors in publishing houses usually didn't allow the word in engineering texts because 'thou' means 'you' to them. And you are seriously considering that your next canon is going to use G-code in the firing sequence??? :-) Well, at least this usage would be canon-ical. Regards, Kent PS - By international agreement the inch has been exactly 25.4 mm for more than 50 years. Ouch! So I'm that far out of date. Hmmm. time to download some new brain cells. ;-) Dave -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary stage
I went back and reread the previous emails and saw you called what we were working on 'enveloping'. I had not remembered that term. I am trying to see how to modify the curve to allow what you want. I have not seen a way yet. On Oct 31, 2013 6:19 PM, andy pugh bodge...@gmail.com wrote: On 31 October 2013 23:11, Stuart Stevenson stus...@gmail.com wrote: Describe your enveloping worm so I can try to model it. That is what we have been modelling earlier. (I am a bit confused) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
