Well, I calibrated the X, Y and Z motors. BUT I've managed to break my first bit, when Calibrating the Z axis the figure I put in was too great and oops it broke the bit before I could hit the stop. Anyway I haven't yet tried to calibrate the A axis and I need to find out how to set the travel limits of X, Y and Z so that they stay within their working range and don't crash.So my machine has metric leadscrews, 400 is the exact motor setting. The antbacklash ballscrews are pretty good and the accuracy on repeated cycles is very close.Just guide me please as to where in the manuals I'l find infoon setting ABSOLUTE limits without using limit switches.
BTW just as an afterthought, have you seen the latest vernier calliper from (I won't say) it has Metric, imperial AND Fractions on its digital display; Pretty smart I thought..