3d printed mask with exchangeable filter case update 2020 april 06 —

Founded 3d printed mask with exchangeable filter case update 2020 april 06 models & stl files for printing
Geodesic spheres
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Geodesic domes
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Ball joint chain
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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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Mask Strap Hook
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