The wheel from my telepresense robot work in progress.

Configurable for any radius, roller radius, number of rollers, roller angle, bearing size, etc.

I eventually want to cast rubber or silicone on the rollers.

.scad at github

I've only included a sample STL here. Get the .scad at github: https://github.com/markfinn/markbot/tree/master/mcwheel

Parameters are at the top. The bottom has several modules that can be un/commented for display vs printing.

Uses 2 bearings, one bolt/nut 2 washers and 4 shims per roller.

The hub is left solid right now since I haven't worked out my drivetrain yet.