Gary,

I will probly be useing a mix of nema23 and nema34. Im going to convert a Amadeal AMA25LV mill to cnc http://www.amadeal.co.uk/acatalog/AMA25LV.html#a29 . So i was thinking mabe a 6Nm "ish" nema 32 on the Z axis, and two 4-5Nm "ish" nema 23s on the X and Y axis. Il be useing your ballscrews on all axis, thinking mabe 16mm Bscrews on X and Y and 16 or 20mm on the Z? Il be useing a direct 1:1 ratio bettween screw and motor. Would it be ok to mix diffrnt drivers on one machine? say 2 PM752s on X and Y runing the 2 nema 23s and 1 digital driver running the nema 34 for the Z? What kind of driver/motor setup would you recomend on this build? I heard that nema 34 size motors have a slower acceleration than the 23 size, is it true? and if so are they ALOT slower or is it hardley noticable?

Thanx for your replys

regards
Simon