Hi

I should know the answer to this, and i think i do, i just need reassuring.

I have a 3Nm, Nema 23 motor, i am going to use to power my Z axis on my milling machine, i intend to use a toothed belt & pulleys, my question is this, should the DRIVER pully (ie, attached to motor shaft) be LARGER or SMALLER the the pulley being DRIVEN (ie attached to Z axis Leadscrew)

Regards

Ray