Quote Originally Posted by gavztheouch View Post
If you have stepper motors they may jump a lot of steps when you power them up. You could pause the g code, note the program line number then move to 0,0,0. If possible you could clamp the axis in position so they don't move when you power up the next day.
Interesting point. There is a bit of a bang and judder when I first turn on the control electronics, although I haven't looked to check whether or not the motors appear to move by any noticeable amount. I had assumed that this was unlikely to be more than moving to the nearest whole step rather than microstep, and with my relatively fine-pitch leadscrews (1.5mm) this wouldn't be much of a linear movement. If I did this kind of restart during my current job, then this would be well within the roughing machining allowance.