NASA-JPL-3D Printed Respiratorsby May 20, 2020May 21, 2020 Designs for 3D printed respirators, including instructions, STL files, and initial test data. Download 3D print files and see more info at Github link: https://github.com/nasa-jpl/COVID-19-respirators Tags:3D PrintingJPLMaskNASARespiratorSTL file