Screwballs is an easy assembly puzzle, first designed and prototyped in May 2009. The puzzle has six identical rods with right and left-handed threads at the end, and four different balls, each with three threaded holes. The object of the puzzle is to assemble a tetrahedron. Because of the threading, the puzzle is assembled as an implosing, i.e. turning all the rods simultaneously and puzzling the balls together. The coloring of the first prototype was suggested by George Miller. When I asked him what color the balls should be, he responded "mine are always blue". "Screwball" is also a baseball pitch
, as well as the name of several other things
, now inluding also a puzzle design :-).
Watch the YouTube video
Watch the wooden version
Download the CAD model and print it yourself
Read more at the Shapeways Forum
Read more at the Non-Twisty Puzzles Forum
Please order a 3D-printed do-it-yourself puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or contact Oskar
directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.