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Invented and built by Tony Fisher in 1989.
This puzzle is part of the series "Octgonal Edges". All modifications of this series are made by truncating an 3x3x3 on its edges. These truncations are symmetric as in the mass produced octagon from which the series takes its name.
The technical signature (Octagonal Edges Extended 8800044000) indicates where to cut the original cube.
Without the keyword "Extended" it is a variant made only by truncating the original cube. With the word "Extended" some sides left over from the original receive additional extensions to "delete" some of these remaining faces.
Edge length: 77 mm
Height: 57 mm
Weight: 159 grams
The non-extended variant is "Octagon/Cube". See image 6.
Thank you to the following people for their assistance in helping collect the information on this page: Carter, Geert Hellings.
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