Bucky Brain Gear

Here is a set of 60 interlocking double spiral bevel gears arranged to rotate freely around the edges of a truncated icosahedron (Buckminsterfullerene), with the gear planes forming the edges of a rhombic triacontahedron. The traditional brain gear is composed of 8 double bevel gears arranged to rotate freely around the edges of an octahedron, with the gear planes forming the edges of a cube and is a popular subject for stereolithography demonstrations.