Self-folding origami sheets create 3D shapes quickly, cheaply and efficiently

https://techxplore.com/news/2023-07-self-folding-origami-sheets-3d-quickly.html

"combined 2D printing, origami, and chemistry without waste... prints 2D origami design onto both sides plastic sheet... pour hot water over flat sheets, spring into complex 3D (actually 4D) shapes self-fo;lding in seconds... prints with UV-reactive materials... ink doesn't shrink stay flexible when dry... base sheet shrinks when heated and ink resists shrinking leaving gaps between sections of ink on one or other side, control way certain section folds... conductive or magnetic inks, times when flat items initially required"

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