November 28, 2012

3D Printers + Concrete = Revolution

John Hewitt, Extreme Tech

AP Photo

By most measures, the world of concrete might at first seem a little boring. At a recent TED Talk however, University of Southern California professor Behrokh Khoshnevis unveiled his futuristic vision for 3D printing homes and buildings with a souped-up version of the stuff. If concrete can be successfully printed using his “contour crafting” method, the rectilinear grids found in most construction could be softened into strong, aesthetic curves. The formulation used would be a fiber composite with a compressive strength of 10,000 psi. By comparison, a typical batch of concrete used for homes, or the upper floors of tall buildings, has a strength of only around 3000 psi. It would also set fast enough to be fashioned on-the-fly into complex shapes, including arches and...

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TAGGED: 3D printing, 3d Printers


November 27, 2012
Is 3D Gun Printing Moral?
Dylan Love, Business Insider
By now you've probably heard about Defense Distributed, a Texas organization that aims to distribute files for making firearms on professional-grade 3D printers. The group also intends to scale these designs down to the point... more ››