Blend of 2 hexagonal prisms

The blend of two hexagonal prisms is an orbiform toroid. It can be constructed as a blend of two hexagonal prisms.

It has 12 faces, giving it the fewest faces of any known regular faced toroid. However is not a Stewart toroid as it self-intersects. The tunnelled elongated triangular cupola has the fewest faces of any known Stewart toroid with 21 faces.