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Not the first Square-1 in shape of a tetrahedron but this is a pillowed tetrahedron and it was made by truncating only.
The first Square-1 in shape of a tetrahedron was made two years earlier by Anthony Greenhill. However that one has a non-pillowed shape and is a lot bigger than the Square-1 it was made of.
The Danger Cube measures the same height as the Square-1. The puzzle received its name because the creator had an accident while crafting this puzzle.
Height: 78 mm
Edge length: 85 mm
Weight: 86 grams
Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.
This puzzle can be found in collections of these members:
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