Quote Originally Posted by Jonathan View Post
I wonder how much difference it would make if you have two ballnuts on the single screw? One on each of the two cross pieces on the gantry.
Dont think it would add much to extra torque but it would certainly add extra precision due to removing backlash and compensating for wear also help with stablizing whip on longer screws.
I have some lovely 25mm Comtop ground Class 3 preload 2 double nut ballscrews for my next project and the difference between the cheap chinese screws and these is night and day. . . . Cant wait to get on with it.