NIH 3D

The National Institutes of Health (NIH) also offers a valuable collection of free 3D printable models, much like NASA. Their focus is on medical and scientific designs, providing STL files for everything from molecular structures in biomedical research to detailed 3D models of hearts. You can also find 3D printable prosthetics for amputees and protective face shields, which became especially important during the COVID-19 outbreak. These resources are a great way to explore the intersection of 3D printing and healthcare innovation.