I designed the original version of this toy as a personal challenge to see if I could - and in the process learned a lot about how to design complex moving parts for 3D printing. The design was vastly more successful and popular than I expected, resulting in a lot of requests for printed copies, but I wasn't really happy with it. The major body joints - hip, knee, waist, elbow - were all too wobbly and weak. In robot form, the toy couldn't stand on its own, and the legs would sometimes ...
