majorhavoc wrote: ↑
Mon Mar 23, 2020 10:06 am
Stercutus wrote: ↑
Mon Mar 23, 2020 9:13 am
The Alabama Department of Public Health is reminding people to only call 911 for emergencies. Do not call 911 for information on coronavirus, if you need ride to the doctor’s office or have mild symptoms or want to get tested for COVID-19.
Area hospitals are now begging supplies so that they can provide patient care. The hoarders have completely screwed over themselves by buying out the stocks that hospitals need of gloves, masks and sanitizer etc. There will be a lot of irony when people die from their own foibles of trying to protect themselves by buying kit that is mostly useless to them that keeps care providers from having it that they might have used to save their lives.
I got an email from Harbor Freight that while they remain open and would be happy for my business, they are donating all remaining stocks of N95 masks and nitrile gloves to health providers. I applaud that decision.
Between myself and some neighbors, we have a small stock of N95s which I plan on sending to the hospital as their inventory gets scarce. The hospital has already started PPE rationing, and in some settings has limited residents to a single N95 per week. The hospital has advised residents that they are allowed to bring their own gloves and homemade masks, but not N95 masks (for whatever unstated reason, I can only guess
). The hospital has not called for donations of homemade masks, but on the assumption that in a few weeks that will start looking more attractive than the alternative (no PPE left), I have begun manufacturing some homemade masks.
While vacuum bags were rated poorly by this study: https://smartairfilters.com/en/blog/bes ... ask-virus/
and https://www.researchgate.net/publicatio ... a_Pandemic
, primarily for their difficulty of of breathing through, they did perform well in particulate capture. I tested a prototype mask, using HEPA filter material from vacuum bags, and my wife and I both concluded that breathing was not any more difficult than a commercial N95, despite the study's findings. This result may vary with the brand of material you are using, but in my case it seemed fine. Notably: if you are thinking of using vacuum bag material, it should be HEPA rated, and in-fact the HEPA rating exceeds the N95 specification.
I started with a pattern from https://freesewing.org/blog/facemask-frenzy/
, but the prototype mask leaked around the bridge of the nose, because it could not follow the contour there - commercial N95s have a metal strip for this purpose. I've modified the pattern to include a pocket in the bridge of the nose, for a straightened paper clip, which can be bent to achieve a better seal. My (only partly joking) alternative was to suggest simply taping the bridge of the mask to the user's face, instead.
Also, I added short sections of elastic band (to conserve my limited elastic material) proximal to the bands going to secure it to the head, to help keep it snug during use (as the main ribbon I have has no stretch at all).