I don't know about you, but I find this whole 3D Printing (also known as additive manufacturing) to be pretty awesome! As she mentioned in the video, it has been around for about 3 decades, and I'm surprised I haven't heard more about it before now.
3D Printing creates a 3D model or copy of an object and can be done with several types of materials. She goes in to detail in the video on exactly how this is done, but the "printer" basically creates very intricate layers upon layers of the object you are printing. The detail that goes in to these models is so great that the printed copy can function exactly the same as the original.
When I researched this topic initially, I came across a video of someone copying a wrench. The printed wrench could work exactly like the original one, which they do test at the end of the video. That got me interested, but after watching Lisa Harouni's TED Talk, I think this is much more than just a new way to create tools or spare parts. Hearing her talk about prosthetics and implants made me wonder where this 3D printing is going to take us in the future.
For more information visit:
http://www.3dprinter.net/reference/what-is-3d-printing
http://www.ted.com/speakers/lisa_harouni.html (info about Lisa)
http://www.3ders.org/3d-printing.html
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