Open Source N95 Face Mask Requirements + Value Proposition

Requirements

Setting these requirements, we can then evaluate the best design.

1. Can be 3D printed readily
2. Has a replaceable filter
3. Filter holder is modular - and different geometries of filter holder can be used to accommodate different filter material thicknesses and geometries
4. Mask itself is cleanable
5. Allows for use of any filter material
6. Has a gasket around entire perimeter that allows air only through the intended filter material

Deployment:

1. Likely candidate is plastic body (PETg or washable material) with elastomer (TPU) gasket
2. Can be deployed to 5000 3D printers at the OSMS site

Advanced Version

1. Mechanism for self-cleaning:
   1. For example, extraction of filter and placement in an ozonation chamber?

Notes

• UV - is shaded by material, so can apply only to surface disinfection, not deep within a material
• Ozone - as a gas, it has a chance to permeate a material for thorough cleaning
• Alcohol, bleach - can give off powerful vapors to kill germs, but also don't want to kill humans if vapors persist

Based on these 3 considerations - ozone appears to be the optimal cleaner? Worthwhile to star Open Source Ozone Generator.