Unistable Polyhedron

When printed at a uniform density (i.e. filled in, not hollow), this polyhedron has the property that it is only stable on one face. That is, it will always topple over an land on one side.

Try printing with low layer height, since the faces second from the bottom can be rough, and the the polyhedron can come to rest on them.

The existence of these polyhedra was first proven by Conway and Guy.

This particular one was taken from the mathematica notebook found at the article by Pegg, Ed Jr