Quote Originally Posted by irving2008 View Post
250rpm is doable IMHO
You are probably right. Stepper technology has moved on and I need to adjust my comfort zone.

My comfort zones are fairly well tuned, I always 'know' what thickness of material to use, what bolt size etc. But obviously I must now consider adjusting my stepper motor zone, possible my feed rate zone to. This will require a degree of experimentation.

I have had over 1000 rpm on a disc-magnet stepper and a 40 volt driver but that is one whacky stepper motor.