On Tue, Mar 22, 2011 at 8:58 PM, gene heskett <[email protected]> wrote:
> Greetings all; > > A couple of question regarding the math used in gcode handling. > > 1. What is the best way to turn a positive value into its exact negative? > I find constructs like g0x-[#<_var>] are rejected out of hand, but its > seems like there ought to be a better way than > #<_var-minus> = [[#<_var>] - [[#<_var>] + [#<_var>]]] > On a separate, confusing the issue line. > > G0 X[-#<var>] Big expressions can go into [ ... ]. > 2. Using G2 the preferred way seems well nigh impossible, with or without > using arcbuddy.py. > > However, since the radius mode, which isn't well liked, works from where > its at ,to where you want it to go, with nothing more than X Y & the radius > R, it is much easier to make it draw the curves I want. In the present > case, it is not going to be crossing any of the target location points at > anything but perpendicular to one or the other of X,Y. Does that largely > eliminate the objections involving its accuracy at 0,90,180,270 on the > compass? > > I received that die grinder from HF today, finished the mounting on my > mill, and have shaved the end of a short stick of white ash just to see > what sort of a finish it will leave on the shoulders of a tenon carved with > it. Absolutely beautiful, I could silver the end of the stick and use it > for a shaving mirror, not a single loose hair of wood anyplace on any edge, > even if the cut is a dig cut, but I am using climb because the bits edge at > the point of the cut, is cutting into the wood, not out of it. I'll have a > few pix added to my emc subpage by tomorrow I hope. > > Thanks for any enlightenment. > > -- > 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) > <http://tinyurl.com/ddg5bz> > <http://www.cantrip.org/gatto.html> > Your code should be more efficient! > > > ------------------------------------------------------------------------------ > Enable your software for Intel(R) Active Management Technology to meet the > growing manageability and security demands of your customers. Businesses > are taking advantage of Intel(R) vPro (TM) technology - will your software > be a part of the solution? Download the Intel(R) Manageability Checker > today! http://p.sf.net/sfu/intel-dev2devmar > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
