The file 'Star Tetrahedron 3D Printer Model' is (stl) file type, size is 1.5KB.
The Star Tetrahedron is constructed from 10 Foldable Tetrahedron base units. http://www.thingiverse.com/thing:78075.
8 of the tetrahedron are assembled as normal. 2 of the tetrahedron are partially folded and then assembled together into an octahedron. A tetrahedron is attached to each face of the octahedron forming the star tetrahedron.
The final object looks like 2 large tetrahedron intersecting.
tetrahedron40mmC.stl | 5.6KB |