Airless Tire With Gear Bearing
thingiverse
I liked both Emmett's gear bearing and tjhowe's parametric airless tire. The next step was to put the bearing in the tire! The stl uploaded is the original diameter gear bearing with 20mm of airless tire around it. I have shrunk the thickness to 12mm and beefed up the spokes of the tire to 0.8mm so should print as two filament thicknesses. The OpenSCAD file is just both files from the orignal creators in the same document with a couple of minor edits make it hang together. Instructions Print - Play - mess with the settings till it prints "just right " on your printer. The tolerance is set to 0.22 in the .stl which works well with my 0.4mm nozzle at 0.30mm layer heights.
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