I suppose I should have guessed that MIT's Media Lab would come up with 3D food printing and cooking. I was half-joking when I mentioned 3D Easter bunnies. I wouldn't have imagined that anyone was actually doing that sort of thing.
Now you've hit on a subject near and dear to my heart--food! As some of the others noted, 3D printers are already actually being used in food preparation and presentation. I wrote about one particular project at MIT years ago. Cornucopia is a concept design for a personal digital food factory, which stores, mixes, deposits (and even cooks) layers of of ingredients, essentially "3D printing" them into the final product.
I have already seen some 3D projects in chocolate and pastes. I believe you can order custom "prints" from a sweet shop on the west coast.
More time spent on prototyping in the form of more time spent exploring design options should help optimize those designs. And that should at least give the opportunity for better testing and quality. That's what I'm hoping, anyway.
@Droid: Starting to happen already. There are hobbyist 3D printer kits for between $1,000 and $2,000, and 3D Systems recently rolled out a more office-friendly, packaged 3D printer in the ball park of that same price point. I think we'll be seeing a lot more options in this category over the next few months/years.
The 3D printing revolution seems to have a knack for quickly moving technology ahead by way of collaborative effort and even a little friendly competition -- all of course in the name of scientific advancement.
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