IIP Thumbwheel cover and gauge

This slips on over the bed leveling thumb wheel on a Monoprice Maker Select Plus (IIIP) (aka, Wanho Duplicator i3 Plus) printer. The thumb-wheel has a 20mm diameter and screws onto a M3-.5 x 28 mm screw. One full rotation of the nut results in a 0.5 mm up/down movement. This has 10 position markings at 0.05 mm (aka, 5 μm) increments (0,5, 10, 15, 20, 25, 30, 35, 40, 45 μm). I didn't want to replace the nice metal thumbwheels with a plastic one just to get markings. So that is why I made this cover that slips over and is friction fit.

I made this using Thinkercad. I had to print this on a slow, fine detail setting (so the finished product would look nicer). I tried printing faster, but it would have artifacts in it. I think the object didn't have enough resolution from my Thinkercad model.

If you scale this up, be careful that it will not hit anything. On my printer if the bed moves all the way to the front or back it would hit the frame if the thumbwheel was too wide.

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/gyXOb0a1EUb