COVID-19 Face Shield

Design for fast printing, good for donating to hospitals.
- Use A4 transparent sheet and install it horizontally for the visor.
- Use the stapler on top of the transparent sheet to prevent it from falling.
- Use 5 mm elastic band for slot legs version.
- Use 10 mm++ elastic band for T-legs version

This design was inspired by many other designs

> Thanks, https://www.prusaprinters.org/ for overall dimension, T-legs idea and stack idea
https://www.prusaprinters.org/prints/25857-prusa-protective-face-shield-rc3
> Thanks. https://www.thingiverse.com/HanochH for the elastic band hole design.
https://www.thingiverse.com/thing:4233193
> Thanks, Tawatchai Arthonkij for the visor holding mechanism idea.