LaserOrigami uses selective focusing and defocusing of the laser to achieve different effects, allowing users to fold acrylic in the laser. First the laser makes the actual cuts, then the laser is defocused (pulling it back so the heat is distributed over a wider surface) and proceeds to soften the acrylic, and gravity does the bending.
A work by Stefanie Mueller, Bastian Kruck, and Patrick Baudisch, LaserOrigami was demonstrated at Paris’s CHI2013 symposium on computer-human interaction. It’s an amazing demo, but what do you think about it’s practicality? [Thanks, Jude!]