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A fully functional half regular cuboid which would have been impossible in the days without CAD and shapeways.

The inventor designed this puzzle for Dan Fast.
Jeremy rounded of the edges to make the puzzle's look more proportional.
Size: 74 x 74 x 96 mm
Weight: about 200 grams

In 2014 Traiphum Prungtaengkit presented a handmade version, shown in image 6.
Edge length: 76 x 76 x 97 mm
Weight: 600 grams



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