On Monday, January 16, 2012 05:16:05 AM Michael Haberler did opine: > I have some work in progress which enables workpiece Z correction by > loading a mesh of probe points into kins. It was inspired by the recent > thread on warped PCB board milling. > > this isnt ready yet, but a starter for the interested: > http://git.mah.priv.at/gitweb/emc2-dev.git/shortlog/refs/heads/probekins > > In particular, I need to reduce external package dependencies and finish > automatic mesh generation from probed points (aka triangulation) > > - Michael > Thank you Michael. Please, a reminder post when you do think its usable.
> Am 11.01.2012 um 06:53 schrieb gene heskett: > > Hello all; > > > > In carving these pcb's for the encoder, I only have room to clamp one > > edge, the back edge of the pcb. > > > > I carved a dead flat pocket about 30 thou deep and slightly larger > > than the raw pcb material, gouging out the left front corner so the > > board, when pulled left & forward, isn't riding the corner, but is > > located by the left & front edges of this plywood containing the > > milled pocket. But when I add a small board across the rear edge of > > the board and clamp down on it, the front edge of the board rises > > slightly, about 5 thou I'd SWAG. > > > > Is there a way to couple the y axis position to a small z axis shift > > so that the engraving tool will stay within a thou or so of the > > correct depth relative to the warped pcb's surface by driving the z > > deeper as y moves the table forward to work on the rear portion of > > the pcb. Something on the order of 5 thou down at the rear of the > > board, over a y travel of 1 inch, would help, a lot. > > > > I've read the pages about mapping screws, but ANAICT, that can only > > correct the same axis for errors and wear in that axis's drive, but I > > don't see a way to make z move as y moves. > > > > Is it there & I'm too dumb to find it? > > > > Thanks everybody. > > > > Cheers, Gene > > ------------------------------------------------------------------------ > ------ RSA(R) Conference 2012 > Mar 27 - Feb 2 > Save $400 by Jan. 27 > Register now! > http://p.sf.net/sfu/rsa-sfdev2dev2 > _______________________________________________ > 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> Man is a rational animal who always loses his temper when he is called upon to act in accordance with the dictates of reason. -- Oscar Wilde ------------------------------------------------------------------------------ RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
