I Also want to add that John Elson seems to be saying the opposite of the LinuxCNC gcode reference. Was that a mistake? Am I missing something?
http://linuxcnc.org/docs/html/gcode/g-code.html#gcode:g2-g3 "It is not good practice to program radius format arcs that are nearly full circles or nearly semicircles because a small change in the location of the end point will produce a much larger change in the location of the center of the circle (and, hence, the middle of the arc). The magnification effect is large enough that rounding error in a number can produce out-of-tolerance cuts. For instance, a 1% displacement ....." Sincerely, John Figie On Tue, Jan 15, 2019, 6:39 AM John Figie <[email protected] wrote: > Fusion 360 has a post processor setting to use radius arcs instead of i j > k. Radius arcs is not the default for linuxcnc post. I have been using > Fusion with the default i j k arcs and have had no issues so far. > > > John Figie > > On Mon, Jan 14, 2019, 11:36 AM Jon Elson <[email protected] wrote: > >> On 01/14/2019 10:53 AM, [email protected] wrote: >> > Is adding a #TOLERANCE_INCH and #TOLERANCE_MM to the .ini file >> > sufficient? >> > What tolerances are reasonable? >> > >> > >> It depends on how many decimal places your CAM package >> supplies. If it supplies 4 digits >> (X1.2345) then probably .0002 should cover all the roundoff >> errors. >> >> Jon >> >> >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
