Is there anything LEGOs can’t do? The idea of building a working Rubik Cube has always appealed. Here the challenge is to create a mechanical device that has a number of degrees of freedom about a central point. It’s not easy! The cube consists of 12 edge pieces, 8 corner pieces and one central piece. All of these have to be interlocking, yet still be able to rotate about any axis at any time in any direction. Link.
LEGO Rubik’s Cube