Re: [Emc-users] Rotate Workpiece Coordinate System?
2012/7/3 andy pugh bodge...@gmail.com: On 2 July 2012 22:45, Florian Rist fr...@fs.tum.de wrote: I.E. I'd like to be able to place my work-piece anywhere on the table, in any orientation and then somehow measure positions and orientation and then be able to compensate both it so that I can run a my prepared job. See: http://www.linuxcnc.org/index.php/english/component/kunena/?func=viewcatid=40id=20912#20912 Wow, thanks to John Thornton! I was asked for a solution for this exact alignment issue by a client I am trying to get a contract with. -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotate Workpiece Coordinate System?
On Wednesday 04 July 2012 07:37:20 Viesturs Lācis did opine: 2012/7/3 andy pugh bodge...@gmail.com: On 2 July 2012 22:45, Florian Rist fr...@fs.tum.de wrote: I.E. I'd like to be able to place my work-piece anywhere on the table, in any orientation and then somehow measure positions and orientation and then be able to compensate both it so that I can run a my prepared job. See: http://www.linuxcnc.org/index.php/english/component/kunena/?func=view catid=40id=20912#20912 Wow, thanks to John Thornton! I'll second that, thanks John. I have often battled 'square to the table' problems when clamping down my vices, so I am sure that this will be useful. I was asked for a solution for this exact alignment issue by a client I am trying to get a contract with. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! If builders built buildings the way programmers wrote programs, then the first woodpecker to come along would destroy civilization. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Plasma
2012/7/3 mark center mcen...@gmail.com: Vibration consideration and rigidity are usually more limiting factors in machining than HP. Yes, of course. And that is why I would like to have servos being able to get full power out of spindle, so that I can learn about the vibrations on that machine. We have been told about these things theoretically at school, so I want some practical experience as well. And machine for all kinds of soft materials seems like a nice starting point for me. Consider a design approach based on experience (look at what someone has done that works) rather than deterministic choice (formulas). Yes, I do not intend to reinvent the wheel. Actually I do have a little experience as well, but certainly not enough yet. 2012/7/3 Steve Blackmore st...@pilotltd.net: Google end mill cutting forces loads of information including this if you like math :) Thanks! Selecting right keywords is 80% of success in web search. -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A axis and spindle
On 4 July 2012 15:00, Kasey Matejcek someo...@lkm.bz wrote: I want to be able to turn down the part then change the tool to drimal type cutter tool and cut a pattern into the peace with one gcode file Is this possible? It is possible. It isn't especially easy. It is probably easier with servos than with steppers though. The solution is probably to have two separate PID controllers in the HAL file, one taking a command from axis.3.motor-position-cmd and one taking an input from motion.spindle-speed-out (pin names from memory, not from the docs). You would then use a mux2 HAL component to send one or other of the PID outputs to the PWM generator. You could switch the mux2 on the basis of motion.spindle-on. Then M3 / M4 would disable A-axis control. The main complication to this simple scheme is that the A-axis PID will try to unwind all the lathe-mode rotations when you switch to lathe-mode. To counteract this you would need to force the encoder.N.index-enable pin high when the mode changes. This will take a slightly complex array of HAL functions, an edge-detector (HAL oneshot) to set the index, and a HAL tristate_bit to set the encoder index-enable. You would probably (this is untested) simply setp the tristate-bit.0.in to 1, and net the oneshot output to tristate-bit.0.enable. The behaviour would then be that the axis would move in A-word control until an M3 or M4, at which point the mux would direct the speed PID to the PWM generator. On M5 the mux would switch to the old A-axis position control, the oneshot would trigger, loading a true to the encoder.N.index-enable pin. Because the spindle is many turns away from it's required position the A-axis PID controller will be maxed out, so the spindle will do at least one turn past the index. When it passes the index the encoder counts will go to zero, the PID will no longer be saturated, and the spindle should return to the last commanded angular position. http://www.linuxcnc.org/docs/html/hal/intro.html http://www.linuxcnc.org/docs/html/man/man9/mux2.9.html http://www.linuxcnc.org/docs/html/man/man9/oneshot.9.html http://www.linuxcnc.org/docs/html/man/man9/tristate_bit.9.html -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Serial comms within a userspace component
Hi I have been playing with a C userspace component to pass values from Linuxcnc to an arduino for display on a pendant LCD. The code works perfectly from a commandline program but when inserted into a component, it compiles and runs but each write(fd, buff, sizeof(buff)) goes to stdout / stderr instead of the place fd points to, which is /dev/ttyUSB0 I can connect to a socket server from within the userspace component and pass the values indirectly, but it is bugging me to distraction that perfectly normal serial comms code which can be shown to work elsewhere will not work properly in the component. If anyone has any ideas why this should be, I would be grateful! regards -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Serial comms within a userspace component
On Wednesday 04 July 2012 14:32:06 Schooner did opine: Hi I have been playing with a C userspace component to pass values from Linuxcnc to an arduino for display on a pendant LCD. The code works perfectly from a commandline program but when inserted into a component, it compiles and runs but each write(fd, buff, sizeof(buff)) goes to stdout / stderr instead of the place fd points to, which is /dev/ttyUSB0 Basic C stuff AIRemember: You did #include stdio.h I assume... And what is the type of 'fd'? studio.h should define that globally, or did the last time I used it. (And I am assuming you are in fact opening a path to it prior to the write) I'm thinking that because of the type you used for 'fd', that it may well be volatile, and out of that functions 'scope' by the time you actually do the above write. Some printf's to stdout as to the value of 'fd' may be enlightening, bearing in mind that 'fd' should be a pointer, and should retain its value when printf'd in the next line after the open, and should be identical in a printf in front of your write, both as 'fd' and as '*fd'. OTOH its been much of a decade since I last carved any fresh C, so my ancient memory could well be full of it. I can connect to a socket server from within the userspace component and pass the values indirectly, but it is bugging me to distraction that perfectly normal serial comms code which can be shown to work elsewhere will not work properly in the component. If anyone has any ideas why this should be, I would be grateful! regards -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! Democracy is a government where you can say what you think even if you don't think. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A axis and spindle
andy pugh wrote: The behaviour would then be that the axis would move in A-word control until an M3 or M4, at which point the mux would direct the speed PID to the PWM generator. On M5 the mux would switch to the old A-axis position control, the oneshot would trigger, loading a true to the encoder.N.index-enable pin. Because the spindle is many turns away from it's required position the A-axis PID controller will be maxed out, so the spindle will do at least one turn past the index. When it passes the index the encoder counts will go to zero, the PID will no longer be saturated, and the spindle should return to the last commanded angular position. And, how to do this without causing a momentary huge following error that either causes a following error abort or a servo amp trip is not clear. I think it needs some kind of gradual gain change to allow the servo to catch up gradually before going to full gain. Jon -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A axis and spindle
On 4 July 2012 21:00, Jon Elson el...@pico-systems.com wrote: And, how to do this without causing a momentary huge following error Ah, yes. Good point. Given that, I think it has got to the point where a custom HAL module is called for which mediates the position feedback. (though another mux to short-circuit the feedback would work, connecting axis.M.pos-feedback to either position-command or encoder-position as required. (possibly triggered by a timedelay component). The spindle doesn't have an f-error problem. I guess you could just ignore f-error on A too, and short-circuit the feedback. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A axis and spindle
I dont know how this is done on newer lathes but Ive seen older ones with an electric clutch on the spindle that engages and a seperate servo motor that does the milling or positioning moves then disenguages for normal lathe turing. Could an encoder be put on a the servo(except for the index pulse) this way the servo encoder would not have the wrap up from turning operations as it would be disengaged most of the time? I am sorry that this is probably not helping this person but I am thinking about doing this to a lathe of mine and this topic reminded me of my question Terry - Original Message - From: Jon Elson el...@pico-systems.com To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Cc: Sent: Wednesday, July 4, 2012 3:00 PM Subject: Re: [Emc-users] A axis and spindle andy pugh wrote: The behaviour would then be that the axis would move in A-word control until an M3 or M4, at which point the mux would direct the speed PID to the PWM generator. On M5 the mux would switch to the old A-axis position control, the oneshot would trigger, loading a true to the encoder.N.index-enable pin. Because the spindle is many turns away from it's required position the A-axis PID controller will be maxed out, so the spindle will do at least one turn past the index. When it passes the index the encoder counts will go to zero, the PID will no longer be saturated, and the spindle should return to the last commanded angular position. And, how to do this without causing a momentary huge following error that either causes a following error abort or a servo amp trip is not clear. I think it needs some kind of gradual gain change to allow the servo to catch up gradually before going to full gain. Jon -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A axis and spindle
It is really a C axis lathe being described I believe (spindle rotates about Z), and a C axis live tooled lathe is such a mainstream machine in the industrial world that it seems a shame not to have a robust, well-thought-out LinuxCNC configuration for this application. My thought is that it should use the C encoder all the time, but with a velocity mode for normal turning, threading, and CSS. Encoder rollover would be needed, but 64 bits should handle an awful lot of revolutions of the spindle. -- Ralph From: andy pugh [bodge...@gmail.com] Sent: Wednesday, July 04, 2012 1:15 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] A axis and spindle On 4 July 2012 21:00, Jon Elson el...@pico-systems.com wrote: And, how to do this without causing a momentary huge following error Ah, yes. Good point. Given that, I think it has got to the point where a custom HAL module is called for which mediates the position feedback. (though another mux to short-circuit the feedback would work, connecting axis.M.pos-feedback to either position-command or encoder-position as required. (possibly triggered by a timedelay component). The spindle doesn't have an f-error problem. I guess you could just ignore f-error on A too, and short-circuit the feedback. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A axis and spindle
On 4 July 2012 21:37, Ralph Stirling ralph.stirl...@wallawalla.edu wrote: My thought is that it should use the C encoder all the time, but with a velocity mode for normal turning, threading, and CSS. Encoder rollover would be needed, but 64 bits should handle an awful lot of revolutions of the spindle. Rollover is a non-issue within the lifespan of most machines (5 million years at 3000rpm and 2048 counts per rev) There is (somewhere) a config for aligning a milling spindle for tool change, so it's a solved problem. I just couldn't find it. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] C Axis in Lathe
Searched Youtube and Google for any info or examples of the use of C axis in Lathe but found nothing. Any one using it and how well does it work? Thanks! dan k -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] C Axis in Lathe
Ah! I should have read the latest posts! Guess it's referred to as A axis not C ?? -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] C Axis in Lathe
Google c axis lathe and you'll get plenty of examples. The convention for identifying axes on a CNC lathe is X perpendicular to spindle centerline, Z along spindle centerline, so C is spindle rotation. A-axis would be the rotation of a live tool for drilling into the side of your work (rotation about X). -- Ralph From: k...@gmail.com [kliegelmach...@gmail.com] Sent: Wednesday, July 04, 2012 5:52 PM To: emc-users@lists.sourceforge.net Subject: [Emc-users] C Axis in Lathe Ah! I should have read the latest posts! Guess it's referred to as A axis not C ?? -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] my issue with G38.4 again
Figured it out! I added a little G1 X+0.02 (mm) to push the probe against the materiel before doing the retract; I guess that, sometimes, the touch probe is on the verge of being either on/off and the slightest bit of vibration will change state. Adding the little push made the probe routine work reliably 4 times so far. I'll send a note in to the author. John A. Stewart. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] C Axis in Lathe
I use it and it works good. It is much easier to generate the g code in cam, there are not a lot of lathe specific canned cycles yet. I have not done anything too complicate, just machined flats on the od. Sent from my iPod On Jul 4, 2012, at 6:49 PM, k...@gmail.com kliegelmach...@gmail.com wrote: Searched Youtube and Google for any info or examples of the use of C axis in Lathe but found nothing. Any one using it and how well does it work? Thanks! dan k -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] C Axis in Lathe
Years ago I read an article on a guy that used a small lathe to make the hundreds of 'pull stop handles' they needed for rebuilding large pipe organs. ... A great use of CNC work! A simple thing, but they needed so many that doing them by hand was problematic. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A axis and spindle
andy pugh wrote: Given that, I think it has got to the point where a custom HAL module is called for which mediates the position feedback. Yes, that sounds right. The spindle doesn't have an f-error problem. I guess you could just ignore f-error on A too, and short-circuit the feedback. Right, going from axis to spindle shouldn't be a big problem, just freeze the encoder position so it doesn't think C is moving. But, going from spindle mode to axis mode is trickier, as it has to gently engage the position servo. When the spindle is being positioned, technically is is a C axis, as in rotating parallel to the Z axis. Jon -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A axis and spindle
Terry Christophersen wrote: I dont know how this is done on newer lathes but Ive seen older ones with an electric clutch on the spindle that engages and a seperate servo motor that does the milling or positioning moves then disenguages for normal lathe turing. Could an encoder be put on a the servo(except for the index pulse) this way the servo encoder would not have the wrap up from turning operations as it would be disengaged most of the time? I am sorry that this is probably not helping this person but I am thinking about doing this to a lathe of mine and this topic reminded me of my question If you need really rigid holding of the spindle then what you describe is probably the only way to do it on a home shop budget. If it is for very light work, then maybe a single motor can do it without it being massive. Then, it mostly becomes a software problem. Jon -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A axis and spindle
andy pugh wrote: On 4 July 2012 21:37, Ralph Stirling ralph.stirl...@wallawalla.edu wrote: My thought is that it should use the C encoder all the time, but with a velocity mode for normal turning, threading, and CSS. Encoder rollover would be needed, but 64 bits should handle an awful lot of revolutions of the spindle. Rollover is a non-issue within the lifespan of most machines (5 million years at 3000rpm and 2048 counts per rev) There is (somewhere) a config for aligning a milling spindle for tool change, so it's a solved problem. I just couldn't find it. Not necessarily. Assume 3000 RPM and a 1000 cycle/rev encoder. Typical 24-bit encoder counters will roll over on a bit over a minute (16 mil/12 mil). That gets overflowed to 32 bits, so it would take 358 minutes to overflow the 32-bit count. I think all the encoder counters on LinuxCNC currently use a 32-bit count internally. Jon -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] C Axis in Lathe
Wow, that's cool.but all I wanna do is index to drill and chamfer a cross hole in a small 'hitch pin'. Simple stuff comparatively, but a lot less work in the lathe instead of a second operation in a mill w/ indexer dk Message-ID: CAFq0N1zB-W-KnixXYFL5qkfso0f_ bm9e9aeYP0+FA=euk8-...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 Years ago I read an article on a guy that used a small lathe to make the hundreds of 'pull stop handles' they needed for rebuilding large pipe organs. ... A great use of CNC work! A simple thing, but they needed so many that doing them by hand was problematic. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
