Castellated Socket Creator

A castellated socket creator. I made this to remove the headset locking ring from a Dahon folding bicycle.

You can set the inner and outer diameter and the number of teeth.

The teeth are made of M3x20mm bolts/screws. The default diameter for the screw holes (3.5mm) is designed to be tapped, increase the tooth diameter parameter if you do not want to tap the hole.

Print with 20% infill. Extra top and side walls will add more strength for the required amount of torque.