@dc42 said in Metal milling CNC with Duet 3 6HC:

@berstar said in Metal milling CNC with Duet 3 6HC:

Is it possible to run 1 stepper motor with 2 stepper drivers?
So motor is rated for 6-8A with 2 drivers on board

No, it's not possible. However, MB6HC can supply up to 6.3A peak/4.5A, which is enough for many Nema 34 motors.

Okay, thank you. Would it be beneficial to install additional cooling on the stepper driver chips or just add active air cooling?

And are there protection from "burning" the board?

Is it possible to run 1 stepper motor with 2 stepper drivers?
So motor is rated for 6-8A with 2 drivers on board