Hi Shapeways fans, Marbler is puzzle version of Yosuke Ikeda's Algoloop. I met Ikeda in Kanazawa 2019, where he performed his entertaining "Hello Goodbye" show. Ikeda's Algoloop is a mesmerizing piece of hand-operated moving-marble kinetic art. It begged to be turned into a puzzle, which is what I did. I decoupled the four circles, and I gave each of the a spring for simple push-based operation. I also reshaped the loops, to make the crossing of marbles at the crossing points more reliable. The puzzle is fun to play, but not very difficult. Watch the YouTube video. Buy the puzzle at my Shapeways Shop. Read more at the Twisty Puzzles Forum. Check out the photos below. Enjoy! Oskar