N95 Face Mask Filter
Description
Why: At this time, the N95 masks are precious. The goal of the BaileyMask is to make 4 filters (33mm x 75mm) from each full N95 mask. What: It has a tight seal around the face, and a check valve system to reduce humidity inside the mask and thereby extend the usefulness of the filter. The filter can be removed and sterilized with UV and hydrogen peroxide. The filter box can be easily adjusted so air freely bypasses the filter when full protection is not needed. Tips: This build requires a 3D printer. STL files are included. I will add the SAT, X3D files soon. DISCLAIMER: I am not a medical engineer. Although I have tested this for myself, I can't promise it will work for you. Please don't suffocate yourself or your friends, or expose anyone to Coronavirus. Please be sure that you follow these basic principles: 1) The filter must be N95. Anything less won't protect you 2) The filter must fit perfectly into the filter box and seal all the way around. 33mm x 75mm 3) The filter box must have a gasket (rubber band) and be held tightly to the mask. 4) Please be sure the mask seals tightly to your face. If not you will breath unfiltered air. 5) The straps should be elastic AND adjustable (Velcro). Required for a good fit and comfort. Supplies: 1 - 3D printer and 75g of filament (I'm using PLA) to create 3 pieces. ~3.5 hours at lowest quality. 1 - N95 Respirator mask (can cut 4 filters 33mm x75mm) 1.5mm thick foam craft material for check valves a) Inhale: 37mm x 31mm b) Exhale: 39mm x 5mm Thin Yoga mat or other rubbery membrane to make a seal to your face. Flexible adhesive to hold the Face-gasket to the mask, and create a hinges for the check valves. I like ShooGoo. Materials for making straps: Elastic, Velcro, string, needle and thread. Cutting tools for the gasket and check valves.
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