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This is a Stellated Dodecahedron (12 pointed star), with the inner dodecahedron removed. With 1.52 mm thick struts, it is printable in steel, silver, brass, bronze, and the white and colored plastics. This was created with Mathematica. The cylinder struts and the ball joints were joined in Blender, and the file was fixed with Microsoft Repair by Netfabb.