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Monthly Archives: February 2018

Szilassi Polyhedra

Only polyhedraother than tetrahedron where each face touches all other faces. This one has 7 hexagonal faces. Each faces all the other 6.

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Straight Line Motion

Rotate the handle and pen draws a straight line. Beautiful mechanism. Smaller pulley is half the bigger. Based on Hypocycloid or on. https://en.wikipedia.org/wiki/Coin_rotation_paradox

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