I know some of you saw this on my business' FB page, but I'll share here direct as well. I was contacted by a surgical nurse at Denver Health (at first I thought it was UC Health) who asked if I could 3D print N95 masks, as they are rationing them, they only get 1 per day when they are supposed to use a fresh mask between each patient. I tried the design she sent me the link to and it was a horrible design, didn't work at all. I iterated in Solidworks most of that week with that approach, but it needed too much post-printing assembly. Then my nephew sent me
a link to a different design that worked great, and I have been making them ever since. Turns out the Jeffco sheriffs are interested as well. I am making them in two sizes, 100% seems to work well for larger faces, and 90% mainly for women. They use a disposable filter material which is as close to N95 as you can get without actually having it certified by NIOSH. Since they're plastic, they can be sanitized and reused over and over. The user has to provide their own straps. I couldn't find any elastic anywhere (Walmart, Michaels, Hobby Lobby are all sold out, and Amazon was a month lead time). You can use shoelaces or similar though.
So far I have made about 100 masks and have been making them non stop for over a week now. I had 6 machines building them, but one is broken now and needs repair. I am donating them at no cost to the hospital. I am also purchasing the filters and donating them as well.
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