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Apparently the ability of copper to act as a antimicrobial did not escape the attention of some 3D computer printer designers who've come up with an inherently copper-infused anit-microbial, re-usable N-95 mask. Since viruses can't tolerate the presence of copper, the designers created a 3D print medium that includes copper which kills coronaviruses including Covid-19. Because it is plasticized the resulting mask can be fitted to each individual's face by heating the unit, which gives it some remolding flexibility. Yep, it appears that relatively soon one will be able to buy some 3D