3D Printed Breathing Masks. Do They Really Work?

Version 2 (With Bigger Filters): https://youtu.be/0S_BIBZBDks
Remember to turn on subtitles if you're having trouble understanding what I'm saying.
WARNING!

Please make sure to read the documentation and view the tutorial video. The mask won't perform its intended purpose without modifications to the 3D printed surface as well as the use of additional materials to form a sturdy air-tight seal around the face.
This mask should only be used as a last resort if you don't have access to mass manufactured, certified protection equipment.
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Links and More
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Download the files here: https://grabcad.com/library/breathing-mask-with-screw-in-filters-version-2-1

Juresnip's video: https://www.youtube.com/watch?v=0vgynnYzo08

Prusa Research face shield: https://www.prusaprinters.org/prints/25857-prusa-protective-face-shield-rc1

Видео 3D Printed Breathing Masks. Do They Really Work? канала MegaByte