Greetings all; The small bit of postings about G71 possibly being added to LinuxCNC, prompts me to ask about the chances of G68/G69 being added as I have needed to be able to do that on a few projects. Making tapered gibs for instance, is now a matter of proping up one end of a bit of material, making the pallet to hold the gib material, then taking the holdup, drill bit, whatever, out from under the pallet. If the result is wrong by a thou per inch of running length, that can be corrected by std fitting techniques involving known flat files and putting more pressure on the fat end.
That, for larger errors becomes time consuming, tiring work, all of which is for naught if your file is not dead flat. BTDT making the tapered gibs and gib holders for The Little Monster. That, with a file that wasn't flat enough turned each brass gib strip into about 4 days work. With the availability of G68/G69, finding a flat enough file is removed from the time killing fitting, the pallet could have been made flat, and the gib taper established by the rotation of the x axis by a known amount, and not counting the annealing time for the brass, likely a 1 day job. But LinuxCNC can't do that, at least in a straight forward manner, so the making and fitting of TLM's tapered gibs was about a 2 week job since I wasn't able to make the oven get hot enough to do it right in a reasonable time frame. The 425F I was able to get, did help considerably but took about a 18 to 24 hour soak to do it. So I'd vote for G68/G69 to be brought into the available in LinuxCNC bag of tricks. Syntax as a single axis at a time. Something like G68 X Rdegrees, G69 to cancel, perhaps one named axis at a time if the axis is named. Both would be usefull. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
