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Defense Distributed, a group that is developing free designs for weapons made on 3D printers, tested out a firearm that has a plastic lower receiver made on a 3D printer. It successfully fired six rounds before splitting.
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Manufacturers of 3D printers have had quite a run-up: 3D Systems (DDD) is up more than 300% this year and Stratasys (SSYS) almost 250%. There is one 3D printer manufacturer that does not seem to be overvalued and that has been largely overlooked by the market. Arcam AB (AMAVF.OB).
Create, Print, Fold. Draw, create, print and fold beautiful 3D figures with Foldify
An interesting article on the 3D printed guns and freedom of information. While information wants to be free, realize that the choice, whether or not we act on that information, is a moral one.
Steel beams are pretty uniformly strong, but they're all run of the mill, literally. If you start 3D-printing custom beams for the exact purpose they're intended to serve though, you've got a regular space-age material on your hands. It's lighter than steel and orders of magnitude stronger.
The Japanese company NaritaX has printed the first ever perpetual 3D printer printer printer.. etc.
Products and Designs
Hollow Cube is a Rubik's Cube that has been made as hollow as possible. The pieces are held together by dovetail connections.
Stick it to the man (figuratively only please!) with this open source, fun and completely functional butterfly-comb!