this thing's awesome! =D i like to make it reverse rotation at will. "you are at my command, little cubey... NOW SPIN THE OTHER WAY!"
i think its a square hole through the cube, hollow middle, two sides open solid otherwise thats how i percieve it to be
Wow that was boring... They're both spinning the same way... The inner cube is negative, really it's a cube with no center...
nar, you didnt see it right they can change directions but it has nothing to do with dimensions, and you can do it with any line-cube sort of thing