Edited by Thomas Hull

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August 1, 2016 - 5:01pm bugfolder

The deltahedral version of the DeZZ unit is pretty close to a unit that Tom Hull invented in 2007, taught at the OrigamiUSA convention in 2007, and published in the 2008 OrigamiUSA Convention book. The diagrams for Tom's unit were also
published in the 2012 BOS Liverpool Convention book and the 2012 CDO's "Quadrato Magico Magazine."

April 9, 2019 - 11:42pm thomas.hull

Pretty close, yes, but not exactly the same. The unit of mine that you're referring to (which I've sometimes called the "Icosahedron Plus Unit") starts by folding the square into thirds, which is not mathematically perfect for folding a strip of equilateral triangles (needed for deltahedra). I chose to go with folding into thirds because it's fairly quick and easy to do. Lang's version here constructs the perfect length, which takes more work but does result in units that fit together better.