I had some false starts and the project kept getting pushed aside for other things. Then @pubultrastar went and upped the ante with his Icosidodecahedron, and I had to try again. With a little help from this table of polyhedron dihedral angles I finally managed to create my very own icosahedron.
(PG medium draftboard, colored with Uni Posca oil markers)
I chose to have the connectors on the inside rather than on the edges, with an outer layer of triangles glued on top to hide their “fingers.” Here’s how it looked without the extra triangles:
And on the inside:
Now I’m trying to think up some cool triangular artwork for the next one…because of course there has to be a next one.
Here’s the basic design file, for anyone else who’s trying to get started making their own polyhedra:
And here’s the Celtic thingy I used to decorate it:
Show me what you make with it!