Backup ventilator project
https://www.coresponse.rwth-aachen.de/go/id/gqged/?lidx=1 https://coresponse.github.io/blog/instruction/concept/2020/03/25/concept_crank_II_v0.html Backup ventilator - how to make one with a bag valve mask, a motor, and a 3D printer. PLA filament looks like it will work. PETG filament not…