Pentagram Gears was suggested by Michael Valle (of the Gearify software), when he saw my Fractional Gears. The results is a 2.5x3 gearing ratio, where the pentagram gear would have "two-and-a-half-fold symmetry".
Watch the YouTube video.
Read at the iMaterialise Forum.
Read more at the Non-Twisty Puzzles Forum.
Please order a 3D-printed do-it-yourself puzzle kit from iMaterialise 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.
Oskar van Deventer
Oskar Puzzles offers mechanical puzzles and objects that can only exist thanks to 3D printing technologies. All designed by M.Oskar van Deventer.