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An action model, made from a single square paper, by Jeremy Shafer. The flasher basically expands and contracts automatically as you pull the opposite corners. It’s a great way to fold maps, but the center will get used very quickly.
This model can also be “wetfolded”: once it’s ready put a rubber band around to hold it contracted and then put it in water and let it soak for a few seconds, once it dries it will retain its contracted form and spring close itself when opened.
Paper to use
One square paper. I used a 20cm wide paper in the video.
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