Customizable Rubiks Cube Shapes

Create a near infinite range of 3x3x3 shape variations on the Rubik's cube.

This Thing is a work in progress - it needs a Rubik Cube core to create a new puzzle.

Finally got round to printing a couple of puzzles movement is a little sticky but OK. Use Rubik's promotions cubes as donors - not ideal as no tensioning is (easily) possible on centres.