STL (STereoLithography) and OBJ (Object) are two common file formats used in 3D printing to store and export 3D models. STL files are widely used in the 3D printing industry due to their simplicity and compatibility with most 3D printers. They represent the surface geometry of a 3D object using a collection of interconnected triangles, making them suitable for representing complex shapes. However, STL files do not contain color or texture information, limiting their use for full-color 3D printing. On the other hand, OBJ files can store color and texture information in addition to the 3D geometry, making them more versatile for representing detailed and textured 3D models. OBJ files are commonly used in 3D modeling software applications and can be converted into other file formats for 3D printing. Both STL and OBJ file formats play a crucial role in the 3D printing process, allowing designers and engineers to bring their 3D models to life with precision and accuracy.