Shapeoko 3 Z axis

[penumbra (P. Numbra)]

Hi all,

After not using my machine for a few months, I was having a weird binding issue with the Z axis. The machine initiatilized and calibrated fine, but then when cutting the Z wouldn’t return to its top location - just bound. I started tinkering with it and these parts fell out.

Now it’s pretty happy, but I have to suspect these are important. Any ideas as to what I’m looking at?

Thanks!

[WillAdams (William Adams (Carbide 3D))]

That is the lead screw on the Z-Plus — please write in to support@carbide3d.com and we will work out how to handle this.

[dandangerous (Dan Dornback)]

You’ve already got it apart, but here’s a guide I did on replacement

Z-Plus Leadscrew Nut Replacement - How To Guide

I was having issues with excessive depth of cut that I finally tracked down to a worn leadscrew main nut/anti-backlash nut assembly, documented here: Z-Plus play/backlash question Support was kind enough to expedite repair parts, it took about 20 mins to replace and was easy enough to do. Here are the steps for anyone else with the same problem. This is the assembly that needs replacement. Note that the nuts are plastic (feels like nylon or similar). The main nut is held on with the 2 screws a…

[penumbra (P. Numbra)]

Thanks, Will! I will send a note.