Quote Originally Posted by Washout View Post
Funnily enough I have ordered another stepper (wanted a spare and could always use it for 4th axis assuming I can get the 3 running first), so I could cut the extension down and run 2 motors - would I need another driver or wire them both in parallel off of the same X axis driver? I also thought running 2 motors was a bit risky if one starts losing steps for some reason?
2 x motors will be your easiest route with how it's setup already.

Most common cause of missed steps is motors being tuned too high with folks trying to have both Acceleration and velocity too high.
If you keep tuning to sensible speeds then you generally won't have a problem, only other time you can run into issues is if your running very long jobs like large 3D work that can have cycle times well in excess of 20hrs. Because 3D work is usually lots of small fast moves and higher accelerations are often used then steps can get missed over time period.

Keep sensible motor tuning and you'll be fine with slaved motors but unfortunately you'll need another drive.

Run 2 x motors and with 68V you'll easily see 6mtr/min with good Acceleration without any issues provided everything is aligned properly.