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There are plenty of us using belt drive without backlash issues. Properly set up amd with the proper belt/pulley combination, backlash isn't a problem with belts. I use two drive motors for the...

These work well: http://www.ebay.co.uk/itm/121729782896

.Me

I've got a spare one and the rest of the bits...will contact you about it.

This is the diagram I sent to Ricardoco in case anyone else wants it:
Untitled Page

From the picture, unless it's a twin start screw, it looks like you got RM1605 for the longest screw, not RM1610. Assuming the ballscrew is 1150mm long, as per the original post, this will limit you...

Yes some leeway is exactly what you need. Ideally you have 'leeway' in the plane perpendicular to the axis of the ballscrew, not just in one direction. So to answer your question, a bit of both. If...

A Tutorial on motor torque calculations

A question oft asked on MYCNCUK is "how big a motor do I need?". There is no simple answer to this, and the options are usually:
a) follow someone elses...