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Visionaries do still exist, and thankfully there are some in engineering and manufacturing.
RepRap (Replicating Rapid-prototyper) is a self-copying 3D printer. It has made news in the last couple of years while making the rounds in the research sector. Basically, it allows individuals to use a three-axis robot to extrude material in layers to form plastic, ceramic, or metal part designs. So far, recommended thermoplastics include: polymorph, HDPE, ABS, PLA, and PP.
It's not the only 3D printer or rapid prototyper of its kind being designed, but RepRap aims to enable duplication of itself--that is, the 3D printer itself could be copied and given away to others. Already, they've got a list, albeit a small one, of available design files.
If all goes well, demand for RepRap 3D printers will be high. The list of wanted objects will keep them busy. Right now, the few available files are free. Just imagine what will happen to capitalism if this creation, and idea, catches on...then again, just picture what will happen globally if we could reduce excess and limit it to immediate need. Scary and exciting at the same time.
If you're interested in following the progress of RepRap, their blog lends some transparency to the development process--not to mention great YouTube videos demonstrating how 3D printing works. They've also got a RepRap builder's blog for some give-and-take for other personal rapid prototyping machine builders.
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