by schlem, published
Another robot wheel on Thingiverse. This was designed to fit a Lego axle connector, but the hole printed too small. I drilled it out slightly larger than 7mm and shimmed the connector with electrical tape. Suboptimal. I should have at least used some gap-filling epoxy.
FYI This is a rover-style robot controlled by a Basic Stamp, with a simple two servo/ caster drivetrain. If Micheal ever finishes it ( and he may not - that's half the fun), I'll post pix.