Snap-together polyhedron verticies
by mrule, published
update : a revised script and set which includes 4,5 and 6-fold vertices ( slash facets, not sure which to call these ) can be found at http://www.thingiverse.com/thing:4934 and http://www.thingiverse.com/thing:5028.
These two triangular pieces can be assembled into any polyhedron based on equilateral triangles. This includes tetrahedra, octahedra, icosahedra, and many others.
The structure of the pieces is such that they resemble both faces and vertices, so the octahedron is also cube-like, and the icosahedron also looks like a dodecahedron. ( a tetrahedron is self-dual, so that doesn't count ).
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Print out two each of Y1 and Y2, assemble into tetrahedron Print out four each of Y1 and Y2, assemble into octahedron Print out ten each of Y1 and Y2, assemble into icosahedron
A range of other shapes are possible. I believe the C60 buckyball is possible with these elements.