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Ender 3 Lead Screw Stabilizer with hotend cable hanger

by markj113 Mar 8, 2019
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By adding the bearing you are constraining the end of the lead screw. This puts additional strain on your stepper motors. At the base of the rod, it's connected to the motor with a flexible coupler. This allows any inaccuracies in the frame, Z carriage or the lead screw to not be passed on to the motor as friction. All of the accuracy comes from the Z-axis carriage and bearings. The lead screw is designed to be free floating at the top.

I moved the hot end to the top of the lead screw before tightening to get alignment correct.

So far all seems good, moves up and down with no binding or issues.