That Simple Unit (TSU)
![Icosidodecahedron from Charles Esseltine’s TSU](/small/img/models/s/spiked-icosidodecahedron-tsu-400-3b2d883a3.jpg)
Instructions for folding this unit are available from the Web Archive. There is also a videotutorial but quality isn’t the best.
Instructions for folding this unit are available from the Web Archive. There is also a videotutorial but quality isn’t the best.
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