Quote Originally Posted by njhussey View Post
I was wondering whether to get a Nema 34 motor for the X axis as I'm going to drive both ballscrews with a belt. will I need one or will a Nema 23 3Nm one be ok or should I get another driver and stepper and do a slaved setup?
If your driving both with single motor then yes you'll need Nema34 about 6 to 8Nm but make sure you use high power drives for best performance.
My personal preferance is screws connected with belts but if you run slaved motors well within there capabiltys then you shouldn't have any troubles. The only thing I would recommend and will only Use with slaved setup's is Digital drives that have stall detect and provide a Fault signal which you can use to E-stop the system. If you do this then your safe with minimal risk of damage to screws when things go wrong.

What will the main use be.? and what size/pitchscrews are you using.?