A parametric 12mm wheel hub. Use the OpenSCAD file to export the size and depth you need. The default TT-02 hubs are 7mm.
It prints with a grub screw hole, but it's not really needed. If printed in PLA, the hub will require some force and snap over the axle pin. I specifically made these because I was frustrated trying to align those pins every time I had to take a wheel off.
wheel_hub.scad | 2.7KB | |
wheel_hub_7mm.stl | 211.8KB |