Respirator / Breathing mask (Covid19)

thingiverse

I thought designing a 3D-printed breathing mask wouldn't go amiss during Covid19, given that filters (like paper towels) can be easily swapped out. The stabilizing ring initially provided isn't necessary for this simple design, so the mask gets by with just one printed part. Instead of that ring, more complex filter adapters can be used (with an outlet valve, for instance). The FreeCAD project file is also included. By tweaking the splines, the mask can be tailored to fit different face shapes or sizes. I'm not sure how effective the filter will be against corona viruses, but it's still suitable for protection in situations like woodwork.