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A highly customized 4x4x4 cube.
This was an ordinary 4x4x4 cube in its first life. The center pieces of the top and bottom layers are trimmed down to a circle, allowing them to turn independently of the pieces around them. Then the remaining pieces are fused together. Pieces of a second 4x4x4 were used to make the 1st and 6th layers. Blocks of wood or plastic could be used to make these pieces if you don't want to sacrifice a second 4x4x4 cube to the cause.
Links

eBay.com
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Contributors
Thank you to the following people for their assistance in helping collect the information on this page: Erick Anderson. If you have any information or images that you would like to contribute to this entry, please click the apropriate add (
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