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I think the amount of pinion wear that's acceptable is up to the user. For me, I value accuracy and repeatability over unit cost so I change my pinions whenever they start to show slop. It took 7...

I suggest two things for the pinions: 1. Get a allen socket to crank in some torque on those set screws. The angle wrenches just don't have enough oomph to do it. 2. Use Loctite.

I suggest refraining from hitting the red stop button during bit changes. It's not only unnecessary, it also cuts power to the motors, rendering them free to move. All you need to do is remove the...

I have a 2013 PRS Alpha and when the system is powered up, the gantry is solid as a rock. No way to move it at all. I've changed bits hundreds of times and never lost position.

I suspect your...