When creating my ball cube (http://www.thingiverse.com/thing:547980), I read you need a Rubik center for this. So I wondered what the best way would be to print a Rubik center. I saw this center (http://www.thingiverse.com/thing:216017) and actually I wonder if this is the same setup as I have in mind. But this is where I got the inspiration. This design only has 1 axis ready, just a design to spark the discussion : )Made using OpenScad