Protective Face Mask

thingiverse

This is a design for a reusable protection mask that I'm sharing due to the shortage of disposable ones. I aimed to make it more efficient in filtration capability and insulation safety. If you're wondering about its performance, keep in mind that further testing must be done to determine if it's comparable to the N95 mask. Please note that this design is not certified and won't be, so use at your own risk. I recommend using a certified mask over this one, but I'd definitely use it if no other option was available. I'm currently working on designing test procedures similar to those suggested by the N95 standard. It would be extremely helpful to get input from an expert in this field to identify design flaws or improvements and suggest testing methods to make this project better and safer. The filtration pack I recommend using is the same as in disposable masks, not threaded PP fibers, combined with makeup removing cotton pads. The mask filter design was based on the diameter of these items available in my country, but they might be different in size depending on where you are. As a final point, you can cut up to 4 (maybe more, depending on the brand) filter refills from a single disposable mask. Make sure to cut the rings slightly bigger than the inside diameter of the filter base so the material packs tightly and avoids bridging. To add an extra safety feature, I advise using the inner grid. This is designed as the opposite of the outer filter grid, ensuring there's no direct path for air to reach your mouth. This increases the effective distance traveled by air inside the filter, but it also increases resistance when breathing through it.