Octagonally tetrablended truncated tesseract

The octagonally tetrablended truncated tesseract or otbott is a nonconvex scaliform polychoron that consists of 64 regular tetrahedra and 16 blends of 2 truncated cubes. 2 tetrahedra and 4 blends of 2 truncated cubes join at each vertex.

It can be constructed as a blend of 4 truncated tesseracts in the same way ondip is constructed as a blend of 4 sidpith. Its vertex figure is in turn a blend of two vertex figures of the truncated tesseract. It has the same symmetry as the octagonal duoprism.