Thanks, I think that it’s just getting an understanding of the Workplace and Machine Position relationships, which technically isn’t really bCNC but rather what it is reporting from GRBL.
So I’m going down that path at the moment.
I was planning on doing a circle that fits the entire work area, but got sidetracked with working though the coordinate system(s). I may have a chance to try that tonight if I have a fine tip marker, or can make a ballpoint work and see how it goes. And I may try going up to 16 microsteps now that I have things generally dialed in.