Jazz
Thanks...

I am running 1605 ball screws at 48v.

I tried last night on 4000mm per minute, and that seems just about ok actually. I tried higher, but it was screaming at me, so I tuned it down.
As far as the acceleration goes, i have increased it to 600 and that seems ok with hardly a noticeable ramp up in acceleration.

At the end of the day, i guess i will just have to play with it to find the best settings for my machine.
I don't really need it to be able to run stupid fast, but I am hoping to be able to make much deeper cuts which will be the main time saving.

I think I am going to need a way to lift my machine up off it's castors when it's in use.
I seem to be getting an amount of table movement when the machine is moving around.

Cheers
Martin