Aluminium Extrusion Router Build

[JAZZCNC]

Would a 3Nm stepper be enough to drive the twin ballscrew X axis or do you think I would need a NEMA 34 motor. Having said that i would like a add a 4th rotary axis at some point and mount that at the back when the belt goes across to connect the X axis ballscrew so I might go twin motors on the X axis with the CSMIO to drive them. By ATC spindle do you mean auto tool change spindle?

No 3Nm won't be enough for 2 screws but would if had motor on each screw. Single motor you'll need 6 or 8nm nema 34.
I've used these on couple of bigger machines, nice drives and motors and never had any issues.
https://www.aliexpress.com/store/pro...3f34a881y5B3hn

Yes ATC = Auto tool changer.