TechnologyClassroom
Only the curved piece from https://3dprint.nih.gov/discover/3dpx-013440
By reducing the model to one design, I could fit more on the print bed to print at once. Still bendable with PLA.
Tested with mask.
CC BY - Original design by https://3dprint.nih.gov/users/bdsearlehttps://3dprint.nih.gov/discover/3dpx-013440