The Seldom Seen Cube made from Complex Cubelets.
Each unit cube is composed of two interlocked parts - the rings on the six faces are joined into a cage that surrounds the central pins which are connected to the cube's corners. Adjacent cubes fuse together at their faces, corners and central pins but the two halves remain completely separate.
7 w x
6 d x
2.756 w x
2.362 d x