Quote Originally Posted by Bob_series1 View Post
Acceleration time 0.02 sec
That does sound a bit excessive :nope:

The place I came unstuck was the first time I encountered a G0 suddenly hammering the X axis in to reverse, the worst possible case when it comes to losing steps on a motor, even though you can ignore the cut pressure. My software just threw one in at the cut start, out of the blue, just for fun.

I eventually set an 'okay to hammer in to reverse' threshold, that exempted most normal cutting from accelerations, then gave it a quarter turn acceleration time on the G0's.

Setting the top speed is a bit suck it and see, but you can get an indicator by looking at the torque v speed curve for the motor to see where it starts to plummet.

I need to be a big comfort zone on the G0 speed. Having fitted new super 220V drivers to my machine it would probably be good for 25 mm/s plus, but I still have it set to 10 mm/s. I know it would work fine if I ramped it up, but I just haven't found a job yet where I don't mind risking the metal to find out :naughty: