On Thursday 01 August 2019 05:52:06 Gene Heskett wrote: > On Thursday 01 August 2019 02:59:37 andy pugh wrote: > > On Thu, 1 Aug 2019 at 04:36, Gene Heskett <ghesk...@shentel.net> > > wrote: > > > > output of arcgenm18.py is assumeing G17. not G18. So I need to > > > > > translate the ijk into what it would be for G18 motion. Is there a > > > rule of thumb for that? > > > > G17 XY IJ > > G18 XZ IK > > G19 YZ JK > > Thanks Andy. It would be very helpfull if that was added to the docs. > > > So to change a G17 arc to a G18 change Y to Z and J to K. > > Did that got g3 error, usual recipe, converted it back to g17, lcnc bought it but back plot shows the arc as a straight line???
Now clarify please. I have a #<_z_tmp>, which the gcode sets to=.1875 This equals the radius of the arc and also represents the depth as the while [#<_z_tmp> gt 0.0000], meaning that if no erosion on the carbide, the final pass, decrementing at -0.0005 per pass, the last pass will be a few thou over the depth the key sits in the slot. or it will be shallow if the carbide has seriously eroded. The only y motions are those that move to work the width of the key, ostensively to make the groove .1890" wide. those motions take place at the ends of the g2 or g3 moves so that from above the tool is _____________ |____________| =================$64K-Question================= Now in order to maintain the shape of the half circle, while effectively moving it to an ever increasing depth and running in G18 anything referencing z must have the z_tmp added so the center point decrements with z_tmp. Right? ================================================ So as I step thru the code, watch it get to setting the starting height, but instead of raising z to 0.1875, it stops at about .070" So x and y seem to be running in inches, but z is maybe running in mm but showing inches. But thats just a theory at this point. Different problem but this is 2.9 master too... I need to find that too I noted the shaft was showing a teeny bit of rust from sitting in the distilled water over night, and that the blocks I had positioned and gooped to prop it into alignment hadn't stuck to the poly tray, so I dumped everything and cleaned up the shaft, and now have a 1x2 by 9 piece of white ash gooped to the bottom of the water tray sitting out in the sun so maybe it will stick better. Thick enough the shaft can be laid lengthwise w/o the tray pushing on the ends. So while all that glue is setting, I can work on duff code. And maybe look around in my junk box for another useable capacitor. This sort of pulsing will kill an electrolytic in a short time, not to mention it can't deliver the amps to make a destructive spark like an oil/paper or mylar can. Thanks Andy. 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
