Quote Originally Posted by LorenBMS View Post
It is a direct belt drive, with no gear drive involved. I have not been able to determine any backlash in the belt drive. It is that small if any.
With that type of belt drive, there will be backlash, in the belt and Timing Pulley teeth, the only type that is almost backlash free, is the GT series Belts and Timing Pulleys, so if you can do all your movements in the same direction this should help with the backlash error