Z Stop Adjustment for Creality CR-10

Creality CR-10 adjustable z-stop. Inspired by https://www.youtube.com/watch?v=-HI0PLQ3ThU and based off other z-stop designs but modified for CR-10.
Takes an M4 (approximate) machine screw as the adjustment - recommend a flat-head as in the picture.

Installation requires significant loosening the axle of the bottom wheel on the x-axis arm, sliding the z-stop up, and re-tightening the axle.

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