3D printing pen lets you draw physical objects in thin air by hand

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3D printers are clearly the hottest new tech tool for makers looking fabricate everything from prototypes to finished products, but here's another option that offers a quicker, more casual path toward actualizing the products of your imagination.

The 3Doodler is a pen that allows you to literally draw tiny plastic sculptures out of thin air. Created by two American expats who met in Hong Kong (one an alum of the MIT Media Lab), the 3Doodler

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