From the MAKE blog: A new puzzle called Trigears. Trigears is a set of three gears that must be positioned so that all three gears mesh at a single point and the gears do not jam when they spin. One of the creators notes that there are no other puzzles like it. I can’t think of one. The puzzles were made in a very limited run so, if you want to buy one at Puzzle Palace, it will cost you $425.
