It is mainly dependent on your stepper drivers first and then the motors. The motors can probably handle a lot more volts than you might think. With Gecko drives, you need anywhere from 4 times to 20 times the rated motor voltage. Amps are also a factor for both the drives and the motors. What type drivers are you using? I think if they are from the printer, they may be on the small side. It also depends on what type of machine you want to make, but a mill will require a pretty good drive and as beefy a set of motors as possible. The 100's may work okay if the rest of the machine is first rate. Using less than optimal screws and bearings will reduce the effectiveness and strength of the motors.
A few more details from you and these guys will be able to home in on exactly what you might need and may be able to expect.
__________________
Lee |