On Friday 07 June 2013 09:20:58 andy pugh did opine: > On 7 June 2013 10:01, Gene Heskett <ghesk...@wdtv.com> wrote: > > The biggest problem I had with linuxcnc is the inability to easily use > > the probe (g38) function as a homing sensor. > > There is something I only recently became aware of that might help. > http://www.linuxcnc.org/docs/html/gcode/gcode.html#sec:G10-L11 > Lets you set up the touch-off plate in the G53.4 coordinate system, > and does the offset calculations relative to that. > > I haven't actually tried it.
I have, my pcb etching support utils use that Andy. and it works well enough that when I do the drill files, drilling only .030" into a .0625 board, turn it over and drill the other side, the drilled holes meet close enough I can't see any location miss-match with a very strong lens. Parts leads fall right thru. Not equipt to do hole plating of course so I have to solder both sides if its a thru via. I don't have a wave pot either, which if everything was suitably diddled in a non-oxidizing atmosphere, might work. In fact, they work better than the machine does, its developed a stiction in the z axis if it hasn't had a coat of vactra worked into it in the last hour. That machine has, over the last 15 years, been thru its version of hell as I have an alu bar I can bolt to the front of the head casting that carries a harbor freight die grinder, which with jigs I made, can route both the tenon on the end of a long stick of wood, or its matching mortise. It's done probably a thousand of each as I've made furniture. I seriously need a Grizzly G0704, (BF20 I think that is) with ball screws etc. :) I have put way too much time & effort in this piece of junk. 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! My views <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> question = ( to ) ? be : ! be; -- Wm. Shakespeare A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
