Free
It's free to download
Videos
Images
Documentation
Information
COVID-19 Reusable respirator. FFP1...3+ Depends on fabric. (ver.2)
By EvilGrym
COVID-19 Reusable respirator. FFP1...3+ Depends on fabric.
Exhaust valve made of latex glove or something like.
Remove thin walls at nose region of mask. That walls are supprts for printing.
Inhale by nose and mouth, exhale by mouth through exhaust tube. Using this way allows you to breath with fresh air .
Free