We had a very good class tonight for the Shapeoko 3, with a great bunch of makers, and spent some time working through some odd performance issues by formulating and trying a few ideas. After the class @Evan_Lott, @keoliver and I were able to complete the effort when we determined that at low Z heights the lower Z guide wheels were beyond their limit resulting in a very loose fit and a lot of movement. We adjusted the router lower in it’s mounting which alleviated the problem; the Z travel does not exceed the guide wheel travel any more. While we were at it we increased the Z belt tension, it was on the low side.
After running another test job the device appears to be working better than ever.
Happy Making!