We tend to go with thinner people who have a specific kind of bone structure, so when we put prosthetic on them, because makeup is an additive process, it doesn't look like we're building out their face too much.

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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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Ott immediately thought of an additive manufacturing process called direct metal laser sintering (DMLS) that she had encountered in her work at a major aerospace company.

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Additive manufacturing is the process of joining materials to make objects from 3D model data, usually layer upon layer.

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That is why the process is more properly described as additive manufacturing.

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