I should have said that most g codes that I have seen (admittedly, not too many) are either .tap files (in Mach 3) or .txt files -- what is a .nc file? I also tried changing the extension from .nc to .tap and "dry running" it (cutting air). I found three things -- 1/ it is apparently in metric units and I am set up in inches, so it is quite large. I can fix that with scaling in Mach 3 (I believe). 2/ It generates some error codes (end of arc, not coincident with start of next arc -- a close approximation to the actual message.) 3/ When I "run from here" in several of the segments, my machine just describes many circles -- with various starting points -- and an occasional straight line segment here and there and a few Z axis motions. What am I missing here? At this point, my learning curve is very steep.
Thanks, Sawdust John (but no sawdust yet with my new shop built CNC Router)