A study by two business school professors makes the case that green manufacturing is not an expense; in fact it’s a money-maker. It took 20 years, but a Subaru plant in Indiana that makes 800 cars a day has reduced by waste 47 percent and makes use of 99.9 percent of the remaining waste. Nothing goes to a landfill, and dumpsters have been converted to recycling bins. One of the biggest problems was a toxic solvent used to flush painting systems. Subaru now distills impurities from used solvent so that it can be re-used. The impurities go to a company that makes coatings for steel industry ladles. There are a thousand examples, but one of the more intriguing (odder?) is to use all cafeteria food waste in a circular composting track. One day’s waste would be placed next to the last day’s in a plan under study. Special worms devour the waste, leaving rich soil behind. Or, I guess, Subaru could just hire workers who clear their plates.
HP revealed more of its 3D printing plans in a recent webinar. Senior vice president of inkjet and graphics solution business Stephen Nigro spoke about how the technology works and expanded on HP's vision of open collaboration to commercialize its Multi Jet Fusion 3D printing technology for end-production, and open collaboration on new materials. He also said HP will create software to help users decide when to use Multi Jet Fusion versus conventional subtractive manufacturing.
A lightweight electric urban concept car designed by several European companies weighs only 992 lb without its battery. It would have weighed 26.7 lb more if its windows were made of glass instead of the specially coated LEXAN polycarbonate resin from SABIC Innovative Plastics.
Skylar Tibbits' team in MIT's Self-Assembly Lab is now 4D printing self-assembling shapes made of programmable carbon composites and custom wood grain. The composites are being used in a sport car airfoil, and the wood grain is beautiful.
The NanoSteel Company has produced high-hardness ferrous metal matrix composite (MMC) parts using a new nanosteel powder in a one-step 3D-printing process. Parts are 99.9% dense, crack-free, and with wear resistance comparable to M2 tool steels.
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