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A 3x3x3 truncated on ten edges and afterwards extended. The result has the shape of a pentagonal trapezohedron.
This puzzle is part of the series "Sharp Edges". All these modifications have in common that the edges are not truncated regularly but one side a bit deeper than the other. One prominent member of this series is the truncated-only dodecahedron 3x3x3 which was truncated on twelve different edges.
Like the pentagonal trapezohedron was made from of a megaminx this new variant could have been made from the aforementioned dodecahedron. In fact it was made by hand. The author created some master pieces and duplicated them with casting which allowed him to quickly create all truncations of this style. He just had to piece together the version with ten edges truncated and then make some extensions for the remaining pieces.
Its technical signature (205180628100) indicates where to cut the original cube.
Edge length (short): 23 mm
Edge length (long): 57 mm
Weight: 106 grams
Thank you to the following people for their assistance in helping collect the information on this page: Hunter Palshook.
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