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.
The amount of plastic clogging the ocean continues to grow. Some startling, not-so-good news has come out recently about the roles plastic is playing in the ocean, as well as more heartening news about efforts to collect and reuse it.
Optomec's third America Makes project for metal 3D printing teams the LENS process company with GE Aviation, Lockheed, and other big aerospace names to develop guidelines for repairing high-value flight-critical Air Force components.
A self-propelled robot developed by a team of researchers headed by MIT promises to detect leaks quickly and accurately in gas pipelines, eliminating the likelihood of dangerous explosions. The robot may also be useful in water and petroleum pipe leak detection.
Aerojet Rocketdyne has built and successfully hot-fire tested an entire 3D-printed rocket engine. In other news, NASA's 3D-printed rocket engine injectors survived tests generating a record 20,000 pounds of thrust. Some performed equally well or better than welded parts.
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