Orthotunnelled truncated cube

The orthotunnelled truncated cube is a quasi-convex Stewart toroid. It can be made by excavating 2 square cupolas and 1 cube from a truncated cube. There are two ways to do this, resulting in two distinct quasi-convex Stewart toroids. The gyrotunnelled variant results in octagonal faces sharing edges with square faces, while in the orthotunnelled variant octagons only share edges with triangles and other octagons. Both varieties have the same symmetry, face counts, and volumes.