@RichCournoyer I feel you, and you have my condolences. They certainly taught us the same thing in machine tech school, and at my aerospace job! Then again, I survived two wars so maybe I’m just on a lucky streak.
If it helps, I’m actually just looking for a means to mount a spindle probe. I prefer to program with the work offset at bottom center on second operations, and with some of the parts I intend to make with my Shapeoko there is no bottom left corner to pick up on with the BitZero 2.0.
I like @spargeltarzan idea to use a known XY offset for the probe, and at the very least it gets me away from seeking the biggest spindle ever for no particularly good reason.