How To Make A Three-Layered Cube?

Three-layered cube… the production is not very difficult, although it requires some experience! This is impressive, a cube within a cube within a cube from a metal block and none of which can not be extracted from the other! Watch the video below –  the process of creating three-layered cube made on a metal lathe and a drill by Youtuber Engineer BrunS! This unique cubes cannot be separated, yet they shake within each other as if made separately. Insane!