Redi Cube is a twisty puzzle, similar to Rubik's Cube. Here, the pieces turn around the cube corners. For the experts: the mechanism has some similarities with the Dino Cube and the Rainbow Cube.
See YouTube clip
http://www.youtube.com/watch?v=cjfMzA1u3vM
Read on the Shapeways Forum
http://www.shapeways.com/forum/index.php?t=msg&th=1152&start=0&S=5602177c8a9793f01108770cea888148
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