I wanted to make some very grippy 3D printed wheels however the flexible filaments I tried did not provide much grip.

This video shows how to cast custom tyres from polyurethane rubber. You can make wheels of any size, with any tread pattern you like and with a variety of rubber hardnesses depending on the rubber you buy.

Polyurethane Rubber: https://www.mbfg.co.uk/pt-flex-20-rub...

This was the softest rubber available although some others are a bit more durable so they might be more suitable for high wear applications.

Silicone: https://www.mbfg.co.uk/gp-3481-f.html

"Too Cool" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
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