cheers no worries i have been advised that its been better to drive the ball screws with separate motors but then wired together so id there is any interference on start up the same goes to booth so not to sure now. I liked the idea of just bolting the motors straight up to the ball screws without having all sorts of belts and pulleys but having just the one motor would make some things easier. Another job this week is figuring out the x axis drive and what ratio i need to gear the stepper to.