Small 18mm thumbwheels from manually adjusting beds on assorted derivative i3 kit printers. Replaces smaller metal thumbscrew nuts and wing nuts but should not bump into anything.
An M3 screw has a 0.5mm thread pitch when means a full turned of a bed leveling nut moved the bed 0.5mm. Two turns would be a full millimeter. The thumbwheel I designed has 10 points on it so every point is 0.05mm height change. Two points would move that corner of the bed up or down 0.1 mm.
I created another thumbwheel design that is too big for some of my newer i3 kits.
This thumbwheel works well with Tronxy X3, Zonestar P802M, Anet A8, and a few other i3 kits.
If you find this useful, please encourage me with a tip.
UPDATE: added a new version with the numbers in reverse per maker's correct logic: small_thumbwheel_rev2.stl <-- use this one from now one.
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