If Gutenberg could have imagined it, he would have wanted one - if only to make typesetting a lot easier.
3D printing is a staple idea in science fiction, and it is now not only possible to do in large factories, but in the privacy of your own geek home.
The Thing-O-Matic 3D printer is available from MakerBot Industries, and can be purchased as a kit or put together for you, as shown above, for under $3K.
More and more companies are coming out with 3D printers, and they are used for prototypes in industries, concept gadgets, and even one-of-a-kind artwork.
3D printers could also be at the forefront of yet another digital intellectual property controversy - and I don't think this one was envisioned when the DMCA was written.
What would you make if you had your own? That is starting to be less of a theoretical question than you might imagine. The Washington Post wrote in September 2011about the Origo, a 3D printer for kids. Currently, the developers are looking for venture capital, and hope to sell the Origo for about $800. Not cheap, but about the same price as a decent laptop.