Emergency First Responders COVID 19 face mask / respirator. Extends use of N95 masks

I’ve taken the liberty of improving the open-source design released by Dr. Zaugg recently for 3D printing a mask that uses a 2″x2″ piece of filter material (they’re saying they can use a single N95 mask to make 4+ filters for the reusable 3D printed parts.

from Pocket https://ift.tt/2x1tZlA
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