Hi,

So I've recently purchased a Sherline Ballscrew Mill. I've already spent quite a lot on the machine and don't want to buy expensive drive components. The machines part tolerance will be 0.001" or 1 thou thanks to the pre-installed ballscrews. I'm going to be using a 2 phase, 4 amp NEMA 23 steppers and since I'm going to be micro-stepping that means each motor could possibly draw 8 amps. I think that's how it works anyway. I'm looking for advice on what drivers to buy that won't screw with the 1 thou part tolerance or break after 3 days. I hear the Gekko drives are good but they are expensive and the one's I can find are only rated for 7 Amps. Please advise on what to buy/where to buy. Also how much I should spend per Drive.

Second question, I'm controlling the stepper motors with an Arduino UNO and a shield , will that cause problems with the tolerances/ reliability of the CNC components


Thanks,

- David.