Gear Head is a 3D-printed replica of a human head, cut in four slices and connected by a gearing system. The object of the puzzle is to turn the head back in shape. Getting three slices right is easy. The challenge is getting also the last slice right.
Please order a 3D-printed do-it-yourself puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.