Several of my robots use omniwheels. They’re wonderfully versatile, but they’re a niche item — meaning, they’re very expensive. Why not print your own?
- A 3D printer.
- A drill with roughly a 3mm bit.
- Some 3mm-ish metal rod. I used an old coathanger.
- About 13cc of raw material.
- Print both hub plates.
- Print eight wheel rollers.
- Clean the holes through the centers of the rollers, and smooth the outside of the rollers if needed.
- Cut axles for the rollers.
- Mount the rollers on the hub plates. Ensure they can spin reely.
- Glue the two plates back-to-back at a 45-degree offset.