This [home-made face mask] comprised five layers of gauze fitted to a wire frame which covered the nose and mouth. The frame was shaped to fit the face of the wearer and prevent the gauze filter touching the mouth and nostrils. The masks were replaced every two hours; properly sterilized and with fresh gauze put on. Home-made face masks better are than no masks this study shows https://www.researchgate.net/publication/258525804_Testing_the_Efficacy_of_Homemade_Masks_Would_They_Protect_in_an_Influenza_Pandemic PS: What’s the environmental cost going to be of all the one use medical and safety items we will have to throw away?
Coronavirus: Deaconess [Hospital] asks public to sew CDC-compliant face masks for staff https://www.courierpress.com/story/news/2020/03/18/coronavirus-deaconess-ask-public-provide-medical-face-masks/2865273001/ This is a great project for people stuck at home with nothing to do. Piece work to help stop death. There is a video guide included in the link above.