Hi Shapeways fans, Gear Tower Clock is a free-standing clock mechanism. Due to some mechanical-engineering magic, the gear tower stands tall and does not topple. A previous version was hand cranked and it has an hour and a minute hand. This version also has a seconds hand, and it is motor-driven. Watch the YouTube video. Buy the puzzle at my Shapeways Shop. Read more at the Non-Twisty Puzzles Forum. See also Reddit and Imgur. Check out the photos below. Enjoy! Oskar