A 3x3x3 half-regularly truncated 12 times on the corners. The result is similar to the Half-Truncated-Cube.
- Inventor : John Lin
- Mechanism : 3x3x3
- Patents : Unknown
- Producer : Mefferts
- Year : 2008
- Original Price : Unknown USD
- Average Price : Unknown USD
This puzzle is part of the series "Sharp Corners". All modifications of this series are made by truncating an 3x3x3 on its corners. These truncations are not regular as in the Half Truncated Cube. One dimension of the cut goes deeper than the other two. This half-regular style of truncating a corner was popularized by the Hexagonal Dipyramid. The cutting depths do have to go as deep as in the Hexagonal Dipyramid. The Triakis Tetrahedron is another example which uses half-regularly truncated corners too but with diffrent cutting depths.
The technical signature (12488800101A05) indicates where to cut the original cube.
Some members of this series are made solely by truncating. Others receive additional extensions to "delete" some of the remaining faces.
This modification resembles the half truncated cube as four diagonals between two corners still have their original length. Would anyone extend the sides remaining from the original the result would be a solid very similar to the "Pyramorphinx" (see the slight difference in name compared with the Pyramorphix) from Mefferts, a 3x3x3 in shape of a Reuleaux tetrahedron.
The puzzle was mass produced by Mefferts under the title "aXe".
Diameter (inner): 57 mm
Weight: 80 grams
In 2009 Kyler van der Gaag created a very similar version of this puzzle but deeper truncated and gave it the name "Tetra Pyramid DC". See image 4.
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