Quote Originally Posted by blackburn mark View Post
holy sh** jonathan !! i guess thats what you pay the extra for... my best X axis rapid is 1500mm/min

Question: do i need to keep my axis rapid speeds the same as my Y will run at 2000mm/min ?
Indeed, I'm not regretting buying that ballscrew now - £50 well spent. I'm not sure how often that speed will be useful though...could maybe drill something really fast!

I've got all the axis' at different speeds on my milling machine, so no you don't need to keep them the same. I'm using about 1800mm/min for the X axis on my mill. It will go maybe 20% higher, but it's not reliable at that speed any more. Possibly the ACME screws are getting worn (backlash has certainly increased) but I'm not sure if that would reduce the rapids.