Jack Puzzle

$98.00 at Cooper Hewitt, Smithsonian Design Museum.

This puzzle is comprised of six different notched brass bars that interlock in one specific way to create a unified "jack" shape. It's exactingly milled by a skilled machinist in Wisconsin, and it weighs one pound. It's 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... Hand-drawn assembly instructions are included in the package. Each bar has .5 inch diameter. Founded by designer Hunter Craighill…