While the technology is still in the very early stages, 3D printing is nearing becoming a real world application. 3D printing is a tool that can be used to validate a design, ensure pieces fit together properly and even make a product mock-up for marketing.

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In 1998 they cannot unite around anything, allowing Mr Clinton to mock them for wanting to tear up the existing tax code without knowing what would replace it.

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Candidates are brought in for a photo shoot and put in mock-up ads.

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There was, for example, "Slider House Rules, " a mock-up where a single Web page represented a year of a user's life that could be flipped through by a sliding motion.

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Rep. Patricia Schroeder, D-Colorado, held up a mock Oscar, and said she awarded it to Gingrich for best child actor.

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Stonegate Advisors LLC, a research firm that works for health insurers, has been testing clients' plans with consumers in a mock-up version of an exchange, which is an online insurance marketplace.

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But tests with a mock-up produced such a negative reaction that the company all but dropped the technology, except for use in military refuelling aircraft.

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Unfortunately, the mock-up on display here isn't accessible to the public, but you can join us for a behind-the-scenes look just after the break.

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