The Jack Puzzle is comprised of six different notched brass bars that interlock in one specific way to create a unified "jack" shape. It is exactingly milled by a skilled machinist, and weighs just over one pound. A desk object, a paperweight, and a true distraction—but be forewarned, if you take it apart, you might not be able to figure out how to put it back together.
Material: Solid Cartridge Brass (alloy 260 – 70% copper, 30% zinc)
Size and fit:
- 1/2" Diameter bar
- Weighs approx. 1 lb
- Measures 3" X 3" X 3" (assembled)
About Craighill: Powered by a group of playful industrial designers, Craighill creates objects that incite wonder. Their key rings and desk puzzles are Optimist mainstays.