extruder knob helix motion indicator
thingiverse
also a remix of Hexagonal Helix Sculpture (prints supportless) https://www.thingiverse.com/thing:113549 It indicates by downward apparent motion down when extruding, and upward when retracting. Smaller diameter than the Ender 3 v2 extruder knob that was restricting the height of my models when at the top, hitting my z axis top bracket best printed at a high resolution
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