20 Things You Didn’t Know About… 3-D Printing
Article by Christian Millman from DiscoverMagazine.com
3-D printing is all the hype these days, but there’s a lot about the technology that you don’t know.
1. We’ve heard so much hype about the wonder of 3-D printers, but they aren’t really printers at all. They’re “additive manufacturers” more akin to Star Trek’s replicators, building incredibly complex three-dimensional objects by spraying materials in successive layers through special nozzles.
2. Unlike Capt. Jean-Luc Picard, you can’t yet order “tea, Earl Grey, hot,” but several foodstuffs are already in testing, including scallops, cookies and burritos.
3. Mmmmm, burritos. Thingiverse, an online community for sharing 3-D designs, has dozens of templates for print-at-home bongs, bubblers and other items that elicit the munchies.
4. From spaced-out to space itself: NASA is sending a 3-D printer to the International Space Station so its crew can build spare parts — a far cry from the 1970 Apollo 13 misadventure when that crew stayed alive by MacGyvering a carbon dioxide filter using duct tape, cardboard and a plastic bag.
The Liberator printed gun.
Gastev via Flickr
5. Speaking of MacGyver, the TV character hated guns, hence his reliance on a pocketknife as sharp as his wits. He would have been dismayed to learn about the The Liberator — a plastic, single-shot pistol made on a 3-D printer — which easily gets past metal detectors.
6. Should you prefer making love, not war, the following will help: The sex toy industry has embraced 3-D printing with such gems as a toy shaped like Justin Bieber. Don’t ask.
7. It’s not only Beliebers rejoicing in their heroic figures. Engineers at Loughborough University in the U.K. used a 3-D printer to rebuild the skeleton of King Richard III.
8. Even more exciting than entire skeletons are individual bones. Replacement jawbones and hips are among the medical uses of 3-D printing.
9. Fitting, considering the fumes from 3-D printers may necessitate a new set of lungs. Research in the journal Atmospheric Environment shows many desktop 3-D printers produce emissions linked to health issues ranging from asthma attacks to strokes.
10. Some emissions come from certain plastics used as printer feedstock. But 3-D printers can use many other base materials: metal alloys, paper and even soil.
11. Not bad for technology that can cost as little as $300.
3-D printed pieces of the RepRap Mendel.
makerbot via Flickr
12. Or you can buy a printer to make your printer. The RepRap Mendel 3-D printer can build about 50 percent of itself and counting. Can anyone say The Matrix?13. If this is starting to freak your mind, you’re in good company. President Barack Obama devoted some of his 2013 State of the Union address to the technology, saying it has “the potential to revolutionize the way we make almost everything.”
14. Perhaps Obama got inspired after the White House viewing of the James Bond movie Skyfall. The Aston Martin DB5 that Bond appeared to drive was one of three models created using a 3-D printer.
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