Model
https://grabcad.com/library/diy-face-mask-1
About the effectiveness of DIY cloth masks:
TLDR:
Bottom Line on DIY Masks for Fighting Viruses
Data shows that DIY masks made with a single layer of cotton clothing or a tea towel can remove around 50-60% of virus-sized particles. This means they perform worse than surgical masks and FFP2 (N95) masks. Wearing the homemade masks for 3 hours had no significant effect on the filtration efficiency.
DIY masks also work for children, but they are less effective on kids than they are on adults.
https://smartairfilters.com/en/blog/diy-homemade-mask-protect-virus-coronavirus/
