Screw Pack is a packing problem. The object is to fit the seven screws flush into the big nut. The pieces have been designed in a misleading way, such that many packing fit partially, but then the last few screws don't fit. This makes it a confusing puzzle, even when the pieces are easy to distinguish by their color.
Watch the
YouTube video.
Read 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.