Parametric Pyramid Puzzle

thingiverse

This mind-bending puzzle consists of only 5 intricately shaped pieces, each with identical volume. The finished tetrahedron is almost perfectly filled, with a single hidden void left behind. Each piece is crafted from regular tetrahedrons and octahedrons alone. I designed this puzzle decades ago by carving prototypes from wood. This OpenSCAD implementation allows you to fine-tune several parameters: 1. Overall size: Limited by your 3D printer's printing area, a 20 cm x 20 cm bed can just accommodate a 100 mm pyramid. 2. Sanding: To account for various printers and materials, I introduced a "sanding" parameter that can be adjusted to compensate exactly for material overfilling. 3. Groove: The depth of the groove between triangle faces can be customized to your liking (or removed altogether). 4. Mirror: Finally, you can mirror the original piece arrangement if desired. A simplified version of this puzzle - yet no less challenging - is now available as thing:4180442