this post was submitted on 10 Jan 2024
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Hi all, I have a quick question about my z screw coupler (as i understand it, the metal cylinder at the bottom you can manually move your z axis up and down with).

When I manually raise the z axis (with steppers disabled) by rotating the coupler clockwise, after I let it go, it reverses it's rotation on it's own and sinks back down. This is frustrating because it takes forever to actually move it any distance. Am i doing anything wrong? Should you only ever move the z axis with software, and if so, is there a way to fix the issue of it going back down? I don't know how to adjust the tightness of this part, I'm still pretty new.

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[–] rambos@lemm.ee 1 points 10 months ago

If you have only one Z screw you are fine. But if you have 2 Z rods with stepper motor on each one, they can get out of sync when losing power. You can print Z motor brake to solve that problem