Icosahedron Puzzle Slicers

thingiverse

These files can be used to dissect other spherical objects into 20-piece puzzles using a "difference" Boolean function in a program like Blender. The cutters are based around the 20-sided icosahedron. There are two design versions that result in puzzles held together by either magnets or interlocking pieces. For the magnet design, create holes for magnets to be inserted into the printed piece allowing the pieces to stay together. Holes for cylindrical magnets often print with small burrs inside so it's a good idea to clean them out with a 1/8 inch drill bit before inserting the magnets. It is essential to pay attention to magnet polarity or the pieces won't snap together. The pair of magnets on each edge are inserted with opposite polarity, maintain this pattern around each edge and across each piece. Use a dab of CA glue to hold the magnets in place. For the interlocking piece design it's advisable to maximize the quality of your print as any ridges in the finished pieces will prevent them from sliding together easily. Expect some post-print cleanup with these prints. For both design options there are small fillets on each edge allowing the pieces to fit together better and allow for easier removal from the build plate. The files indicate the length of the edges, the length of the cutters, and the depth of the magnet holes. Specific file information is provided below. Icosahedron cutter (30mm edge, 100mm cutter, 4mm magnet depth): Used to create the "Anatomical Heart Puzzle" https://www.thingiverse.com/thing:4146688 Icosahedron cutter (30mm edge, 10mm cutter, 2mm magnet depth): Used to create the "Earth Puzzle" https://www.thingiverse.com/thing:4153383 Icosahedron Interlocking Cutter (30mm edge 10mm cutter): Use to create the "Interlocking Earth Puzzle" https://www.thingiverse.com/thing:4153522