HME Filter Adapter for 3M Half Face Mask

thingiverse

I 3D printed this and the 3M mask cap for 6200/6800/7502 (https://www.thingiverse.com/thing:4163080) with the goal of blocking one side of my half face mask and using an HME on the other if we run low on N95 masks. I found that the mask cap fits perfectly but the HME filter adapter did not provide a seal. The HME filter adapter's connector is flat, whereas the mask cap's connector is ramped, resulting in a tight seal. I combined the best of both designs in TinkerCAD and this is the outcome. I tested it on a 7500 face mask at home and it worked great. I will have to wait until I return to work to try it out on the 6300 masks they issue me. I'm printing with slightly thicker infill just to be extra cautious about making it as air-tight as possible. **Use this product at your own risk, as with any piece of homemade PPE.** Coronavirus COVID-19 SARS PPE mask N95 HME filter ICU healthcare ambulance doctor nurse RT paramedic