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3x7x7 (extended)
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A 3x7x7 cuboid, built with extension on pieces of a reduced 7x7x7.

A 3x7x7 made with extensions done with 500 centimeter cubes and some epoxi. Unlike the earlier 3x7x7s this on has rectangular pieces.



Thank you to the following people for their assistance in helping collect the information on this page: Felix Mercader.

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