Introduction # Printables is a 3D model sharing site that was created by the makers of the open-source Prusa 3D printers. It allows you to upload your 3D models for all to print, modify, and critique. The site also runs contests for who creates the best 3D models. Printables is a 3D model sharing site by the makers of the open-source Prusa 3D printers. It allows you to upload your 3D models for all to print, modify, and critique.