Ender 3 Z-axis preciese switchless adjustable endstop v2
Description
This is second version of endstop. See v1 at https://www.thingiverse.com/thing:6522983 Added protection bolt - after disabling steppers z axis can damage spring element because the weigth of z axis is applied for it. Protection bolt adjusted for 0.3-0.5 mm offset from position bolt and takes the load. This version of endstop has a very good long time stability and repeatability about a few microns.
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