Tracker Ball 3D is based on an idea by Bram Cohen. A large central sphere gear with icosahedral symmetry meshes with four smaller sphere gears that have octahedral symmetry. The puzzle as a whole has tetrahedral symmetry. The object of the puzzle is to scramble it by randomly turning the central gear, and then solve it by getting all colors aligned again.
Watch the YouTube video
Read at the Shapeways Forum
Read more at the Twisty Puzzles Forum
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.