Braun Mixing Wand Coupling

This is the coupling piece between the metal shaft of the mixing wand and the plastic motor connection on the body.

You can buy a replacement (for example here http://braun-service-station.de/Braun-Ersatzteile-Zubehoer/Ersatzteile-Haushalt/Ersatzteile-Mixstaebe/Ersatzteile-Stabmixer-Typ-4191/Plastikkupplung-fuer-Plastik--und-Metallschaft-Braun-Stabmixer-Typ-4191--67050811.html), but I had already mocked this up before I even bothered to look.

I included the SCAD file for others to tweak.