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April 14, 2011 / Martijn

The Make-All 3-D Printer

Since the first 3-D printer was invented by Charles Hull in 1984, machines have seen vast improvements in speed and accuracy. Today’s best 3-D printers operate much like a standard inkjet, spraying millions of droplets of polymer to build an object layer by layer. But there’s a hitch: Most 3-D printers use only use a single material at once, thus each product they produce can be just one color or consistency.

via How It Works: The Make-All 3-D Printer | Popular Science.

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