Face Mask

This is my design for a re-usable face mask frame that could utilize a variety of filter media. This is NOT a respirator and does not claim to be, however, many design features were inspired by respirators. I welcome all feedback in the comments section to further iterate and optimize.

It consists of the following:
- A flexible liner from TPU/TPE designed to roll inward and conform to the face. In doing so it creates a much better seal than rigid shells and folded TPU sheet style designs. However, it won't be able to match super soft medical-grade silicone. Print with four top layers, 0% infill, and zero bottom layers for best results. Also, the shape was the best that I could fashion in OpenSCAD. Please don't judge.
- Rigid shell onto which everything mounts. The lip is intentionally oversized to create a seal between the liner and the shell. Grills require a printer capable of bridging 8mm.
- The gasket/flap piece combining two functions to reduce complexity and parts