These 3D printing files do not represent the texture, color, or any other model attributes of the file.ģD Printer files are created using Computer-Aided Design (CAD) Programs, with “.STL” as their file extension. And do you know what the best part is? You can get some intriguing 3D printer files on the online repositories of these websites for FREE! But before we familiarize you with them, let us see what 3d print files are… What Are 3D Printer Files?Ībbreviated as STL Standard Triangle Language, Stereolithography or, Standard Tessellation Language is the name of a file format that describes the surface geometry of a three-dimensional object. Therefore, this is when the sites providing free 3D STL printer files show up. Anyone can buy, install and switch on a 3D printer without any prior designing skill but what happens next? Well, you need some ideas to get on with the journey of 3D printing, don’t you? Not everyone could have enough knowledge to come up with perfect intricate designs to 3D print their dreams.