Parametric airless tire
by tjhowse, published
This design is inspired by Bridgestone's airless tire concept:
Using the natural springiness of plastic, this design can absorb shock and vibration in a manner similar to a pneumatic tire, but cannot be punctured.
This design is fully parametric.
Update: Added tiny (0.001) offset between spirals. Openscad errored when trying to export an STL otherwise.
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Tweak values to suit your application, compile, slice and print! If you're having traction problems, I suggest a zig-zag of hot glue around the circumference to give it a more frictious surface.