Reuleauxminx Puzzle (Tetrahedral FTD)

thingiverse

:) Couldn't figure out whether I wanted to make a dodecahedral or tetrahedral puzzle, so this seemed like the obvious choice! It's a simple Face-Turning Dodecahedron (colloquially, a "megaminx") transformed into the shape of a tetrahedron. The "pillowing" effect is necessary, had I used a regular tetrahedron, pieces would either fall out or collide mid-turn. Rather than pillow the shape via my usual method, I used a Reuleaux Tetrahedron, which has the interesting property of always being of constant-width. https://www.youtube.com/watch?v=7gMXrwyU0N4