The list includes the use of a Kinect camera and PC for physical rehabilitation, the 3D printing of embedded electrical technologies, a Lego set that helps bridge the gap between crustacean and robot and a device that employs an Arduino board and video games to help stroke victims recover motor skills.

ENGADGET

They also point out that new technologies such as print on demand, which makes printing short runs of physical books more economical, should help them squeeze more money out of the old-fashioned format.

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At least seven companies are expected to show 3D printers at CES 2013, demonstrating the potential benefits of the technology for a wide swath of industries and users. 3D printing uses an additive process to create an exact physical duplicate of a product based on a digital model.

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Half of that was papermaking, ink mixing, printing, transport, inventory, and the warehousing of physical goods.

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And sadly, getting rid of the physical version of the paper, while it does get rid of those printing costs, also gets rid of the display advertising.

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Even the world of physical things will soon become an information technology with the advent of 3D printing (The Economist Magazine recently had a picture of an actual violin that was printed out on a 3D printer).

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Already, 3D printing has been refined to the point where digital models can be duplicated into physical prototypes or production parts that closely resemble mass-produced products in looks and function.

FORBES: Written by Robert ��Buzz�� Kross