This is a pleat-based design, similar to other designs I’ve posted before.  They’re fairly simple to fold on the spot and improvise.  This probably took me like 20 minutes to fold, but I like the idea.

So what’s the idea behind this one?  I fold the paper into 16 divisions… and also 15 divisions.  So the outermost pleat is 1/16 – 1/15 = 1/240.  The next pleat is 2/16 – 2/15 = 2/240, and so on.  So the pleats are very small towards the edge of the paper, and very large towards the center.  Ever since I demonstrated this idea to myself, I’ve been wondering how I can apply it to make more complex designs.

How do I fold 15 divisions, you ask?  I have some diagrams here, but I’ve been thinking for a while I ought to make some clearer diagrams.