These are articles posted by The Fold editor bugfolder (who may or may not be the author; see byline for authorship). The Fold is the online magazine for members of OrigamiUSA. New articles are posted continuously over the two month period of each issue. To contribute to The Fold or for other questions, please see our FAQ.

Truncated Trigonal Trapezohedrons and Special Pentagons

by Thomas Cooper
There is a family of geometric solids, one of which is illustrated in a famous engraving by Albrecht Dürer, that poses some interesting origami challenges.

Editorial: Would a Kawasaki Rose by any other name smell as sweet?

The realm of model names in origami is complex, yet is often overlooked. This article discusses the matter through particular cases, personal experiences, and conversations with other origamists.

How to use photographs and Inkscape to quickly and easily create origami diagrams.

Convention Report: Convention for Creators (CfC)

by Ilan Garibi
The genesis and execution of the Convention for Creators, held in Lyon, France, in July, 2017.

Origami Reference Points: Folding Square Grids with Haga's Method

by Jon Tucker
This articles shows how to construct arbitrary square grids via folding alone, using Haga's First Theorem.

Star-of-David Moneyfold by Fred Rohm

by Alice Gray
"Telephone origami," taught by verbal directions alone, is a long-lost art. One of the best examples is Alice Gray's rendering of Fred Rohm's iconic Star of David moneyfold, originally published in The Origamian.

Theme and Variation

by Thomas R. Crain
This article explores several variations in a square twist crease pattern that may be achieved simply by varying the mountain/valley assignment of the same underlying crease pattern.

Nths via Pythagorean triplets

by Troels Højer Jensen and Hans Dybkjær
In origami we frequently need to find an $$n$$th of a paper, often in order to divide it into an $$n \times n$$ grid. This article generalizes a common technique for finding references and provides some insight into the geometric properties of paper.

Orange Spheres and Odd Even Apples

by Hans Dybkjær
This article tells the tale of the higher spheres of oranges and apples: How I got there, and how to make them.

TCBO: The Lost Chapter

A copy of the long-lost chapter on design from "The Complete Book of Origami."

Folding Wood

The story of a process developed for folding rigid wood laminate, with crease patterns, images, and recipes.

Crease Patterns: 3D Wall and Octet Truss

Two 3D tessellations: a brick wall and an octahedral-tetrahedral truss network.

Careers in Origami

So you want to be a professional origamist? Here are some ideas on how to improve your chances.

Editorial: Annals of Early Origami

The origins of origami in Japan are lost in the mists of history, but we have surprisingly good records of paper-folding from over a thousand years ago in pre-Columbian Mesoamerica.

Connections (with apologies to James Burke)

A recounting of a few unexpected connections between people and events during a journey through the world of origami.

One Ellipse to Rule Them All

Curved-crease origami can be designed by considering the properties of ruling lines, lines on the crease pattern that remain straight in the 3D folded form. This technique was developed by David Huffman, who identified conic section curves has being particularly suitable for curved-crease designs. Two examples using ellipses are given as crease patterns.

Crease Pattern: Dragonfly

A crease pattern for a box-pleated dragonfly.