Y-U Tetrahedron Puzzle
cults3d
A ball tetrahedron puzzle that interlocks seamlessly. Interestingly, its design features components resembling Y and U shapes, adding to its unique charm. To achieve a smooth fit, the pieces must flex slightly as they come together, ruling out PLA as a suitable material choice. The model shown in the accompanying photos is made from PETG, which has proven to be an excellent option. Around 2005, inventor Viktor Genel created a puzzle he called "Octetra". This innovative puzzle consists of six distinct pieces, allowing users to assemble four pieces into either an Octahedron (Y-U Octahedron) or a Tetrahedron (this very puzzle itself).
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