3D printers seem to be the new hype. There is even a store in our town that will let you bring in your design and print it out. Check out the video in the link to see a 3D printed thruster for a spacecraft under the heat. Then tell me what you would get printed out of a 3D printer.

http://www.livescience.com/51244-3d-printed-platinum-spacecraft-thruster-passes-hot-fire-tests-video.html

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