U-Joint

A small, obviously scalable, U-Joint. printed in ABS with 3mm walls and 10% infill on my Ultimaker 2. Instead of using the normal Cura support I used my own which can simply be combined with the file (you can find it here: http://www.thingiverse.com/thing:991392)

The picture shows two u-joints glued together with an axle inside for strength.