How do 3-D printers create objects out of thin air? Where does the matter come from? | Poal: Say what you want.

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How do 3-D printers create objects out of thin air? Where does the matter come from?

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[–] • 1 pt

You know how when you flush the toilet the stuff goes away? It's made from that.

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[–] • 1 pt

So brave and amazing - recycling.

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