Forearm joint for UnLimbited (prosthetic) Arm

This joint can be inserted into the forearm component of the Unlimbited Arm (http://www.teamunlimbited.org/the-unlimbited-arm/) to allow it to be printed in two parts. This allows each part to be printed on a 3D printer with a limited size printbed. It was recently used to join a forearm for an adult that was approximately 300mm (12") long which was printed on and 8" x 8" printbed. The two subcomponents can be printed in PLA and joined using thick CA glue (such as Superglue) then thermoformed as