Covid19 Mask (Geminus Dual Filter) with screw inserts

thingiverse

I loved the Geminus mask, but hated the press-fit inserts so I designed a threaded ring set. I also squared and enlarged the strap holes so that I could use rubber swim google straps. Check the fit of the outer ring (from the outside of the mask). It should be a tight fit and use super glue gel or epoxy, liberally to seal it in place. The Inner ring should screw in from the inside. The logos indention(s) were a personal preference and can easily be removed with Tinkercad. I printed the masks with tree supports for > 60 deg overhangs. That reduced any garbage around the filter holes. We heated the nose areas to shape that area to our specific face shape and size. With proper straps and the shaping, my glasses don't fog up anymore. Assume that this is for show and it is not approved by the CDC, WHO or anyone else who approves masks for use in medical situations.