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Understanding Glow-Fold Diagrams

Glow-fold is a new diagramming method for conveying folding instructions. It is particularly useful for origami applications. Glow-fold works by highlighting the surface of the area which will move during the fold with an orange, semi-transparent “glow.” In the diagram immediately following, a narrow trace of orange, semi-transparent glow will be visible along any open edges. This narrow trace is called afterglow and indicates where the glowing surface went. After glow appears only along edges where the initial glow would normally leak through; in other words, there won’t be afterglow along the folded side of the area that just moved.

Glow-fold dramatically decreases the time it takes to learn a new folding pattern. Instead of trial and error style experimentation, glow-fold allows the folder to navigate diagrams with confidence. It turns the process of completing a new model from a frustrating puzzle into a coherent step-by-step progression. This diagramming system makes origami accessible to scores of people who thought they didn’t have the patience to do origami! See the facing page for a simple demonstration of how glow-fold instructions work.

1 We begin with a square piece of paper. It is yellow on one side and white on the other. We start with the yellow side facing us.

2 We’re going to fold the square in half on a diagonal. Notice that there’s a glow on top of the triangle formed by the bottom and right edges, and the diagonal (marked by a dashed green line) where the paper is to be folded.

3 Imagine the overlay on top of the square in front of you. It would look like this, and you would fold the bottom right corner up to the top left corner.

4 The next diagram would look like this. Notice that there is a narrow band of orange afterglow along the top and left edges. This afterglow represents light that would leak out along the open edges. There is no afterglow along the fold because light from the original glow would not leak out there.