Reaching out to the hive mind here. I remember years ago there was a rather simple model that when folded and laid down it would rise up as the paper relaxed. It was triangular in shape, had these flaps on the inside that if I recall correctly would cause the paper to rise. The recent post and article by David Mitchell and the Magic Hat reminded me of the model. Anyone have any ideas what it was called and who designed it? If so, what book it may have been diagrammed in. Google and YouTube searches are not proving helpful, but maybe it's the terms I am using. Thanks for any help.
Andrew
