[techhelpbb]

Originally Posted by JohnFogarty

Has anyone worked with a router from Probotix? They seem to be significantly more rigid than most. They additionally use screw drives instead of belts.

http://www.probotix.com/ASTEROID-CNC-ROUTER

Delrin anti-backlash nuts will wear faster than ball nuts or ACME spring nuts.
Not an issue, unless you don't check your run-out till you start ruining work pieces.