Bending a sheet of plywood is made possible when patterns are cut into it. The smaller wood units remain connected while flexing more independently as the piece folds. Laser Artisan demonstrates this hinge-making technique by laser cutting a variety of patterns into a plywood sheet and then bend-testing the pliability each one.
In his more recent videos, Laser Artisan tests this technique across entire objects, like this Laser Cut, ‘Living Hinge’ Cylindrical Lampshade:
Though it’s more precise to automate the cuts, you don’t necessarily need a laser cutter to try this. Watch Shop Time bend sliced wood like a slinky next.
h/t The Awesomer.