The initial idea was to build a low cost protection without wearing something on your face.
Helthcare workers during the COVID-19 pandemic work long shifts, and anything attached to your mouth is annoying at least.
We've built the first prototype by surrounding a face shield with polyethylene film and attaching a PC fan on top. This has worked relatively well, but the shield is heavy and there is no real filtering.
There is definitely room for improvement.
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