Jose said: I want to know who is the author of a unit which I have known for years as a "classic".
It is a modular unit similar to Sonobe's unit, but with equilateral triangles. The version I am asking about starts with a 1:sqrt(3) rectangle (bronze rectangle). I think it is modulo by Pietro Macchi the first of 7 variations. I have in the OUSA convention 2002 book. Here are other places it can be found: http://www.giladorigami.com/origami-database/Pietro%20Macchi The only picture is of variation "F". Kathy
