There is no evidence to support the claims that a face-shield or any other device will aid in the prevention of Covid-19. Use at your own peril.
My new ultra-minimalist face shield design utilizes:
- 1 pair of eyewear
- 1 sheet of overhead projector transparency
- 4 zip-ties or twist-ties
- 3 grams of printed material
At current print speeds, I could theoretically produce 300 face shields every 100 hours with a material cost of ~$200 minus the eyewear.