An array of powder-metal parts. Powder metallurgy was practiced long before ancient artisans learned to melt and cast iron. Egyptians made iron tools using PM techniques back in 3,000 B.C. The ancient ...
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Washing machine day: Five laundry myths fact-checked
More detergent makes things cleaner? The quick program saves electricity? And vinegar replaces fabric softener? Many myths circulate around the washing machine. For Washing Machine Day, here's the ...
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