We also discovered some new names, like Nigerian-born portraitist Toyin Odutola, 27, painter and sculptor Lucien Smith, 23, and Artie Vierkant, 26, a digital artist who makes abstract pieces suffused with light and bright colors, using Photoshop, a large-scale printer and pieces of layered plastic.

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Described as a "mega-scale free form printer" by its makers, the massive aluminum structure uses sand, which it forms back into a material that's like marble.

CNN: Architect to build home using 3-D printer

For a 3D printer, though, economies of scale matter much less.

ECONOMIST: A third industrial revolution | The