No-Hardware Mecanum Wheel

thingiverse

Right now the wheels don't have enough grip to function correctly, and are too close together to secure with electrical tape. This is a mecanum wheel that doesn't require any hardware to build and works well with those classic yellow gearboxes from China. The only thing needed is electrical tape (or similar) to wrap the rollers with for extra traction, and possibly a drill to make sure the holes for the rollers are large enough - they tend to shrink if the print warps. The rollers fit together quite tightly by design and won't fall apart unless printed incorrectly. P.S. To get the opposite side of the wheel hub, simply flip it in most 3D printing slicers.