311 312 31l 3d printed knee joint —

Founded 311 312 31l 3d printed knee joint models & stl files for printing
Dual polyhedra
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Dual polychora
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Geodesic spheres
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Geodesic domes
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Polygonal torus
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Eight cubes
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Klein quartic
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Trefoil knot
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Saddle frame
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Helicoid frame
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