3D printers are little machines, but they're making a big impact.
Some analysts even speculate they could soon change the way copying is
done.
3D printers use special material to "print" physical,
three-dimensional objects. Just as traditional printers use ink to
create words on a page, 3D printers use tiny strips of plastic and other
materials to build actual, hand-held objects.
Manufacturers like
Ford (NYSE: F) and General Electric (NYSE: GE) already use 3D printing
technology to recreate engine parts. Scientists presently use the
printers to model body parts. Even NASA plans to ship a 3D printer into
space so astronauts can print replacement space parts in orbit.
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