Issue 56, January–February, 2020

A double-sided spiral diamond from one sheet of paper. Sy Chen based this design on his earlier two-tone diamond, which appears on the OrigamiUSA website. Links to both models are in the article.
An endearing wet-folded mouse with teeth for the Year of the Rat (or sometimes Mouse).
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by Francesco Mancini
Valentine’s day is coming, and if you like origami hearts and you’re also into modulars, you can follow the diagrams and fold a Two of Hearts modular.
A crease pattern and notes for folding a delightful heart with a color-change clover. Designed by Meenakshi Mukerji, it's a confluence of the works of Shuzo Fujimoto and Francis Ow. The clover can be extended into Fujimoto's Hydrangea as well as most designs that start with a four-sink base or crossed box pleat.
Why go to a CDO convention? It could be for the folding games.
by Laura Rozenberg. Translated from Spanish by James Buschman
A review of a book on the role of folding in mathematics, art and philosophy, and its struggle for recognition through the centuries.
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A harmful hazard warning sign that makes good use of the color change technique.
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by Sharon Turvey
A modular recycling symbol by Sharon Turvey that can easily be made from recycled paper or junk mail, but it's worth folding from any paper.