Fractal Tetrahedra (Mitsubishi Logo in 3D)

move 1

move 2

A tetrahedron is removed from each edge of a tetrahedron. If the size of the removed tetrahedra is one-third of the original tetrahedron, then the remaining polyhedron can be regarded as a three-dimensional Mitsubishi logo. The removed tetrahedra can be further divided in the same manner, producing a fractal structure.