Motor Adapter (2mm to 1.6mm cross)

Flat-bottomed motor adapter to fit onto a 2mm motor shaft, allowing connection of a 1.6mm cross-type axle. Eight 4.8mm diameter studs are spaced around the shaft (two per 90º angle) to allow for additional connections. The shaft is deliberately modeled without any extrusion compensation; it will need to be reamed to the correct diameter.

OpenSCAD code is provided to allow for further customisation.