A CAD program, which stands for "Computer-Aided Design," is an important component when it comes to ordering 3D prints for industrial purposes. CAD programs are specialized software used to create detailed and accurate digital models of objects, components or prototypes. These digital models serve as basic blueprints or designs needed to produce physical objects using 3D printing technology.
.STL (stereolithography) is a file format used to represent 3D geometry, especially surfaces made up of triangles. It is a common format in 3D printing and is used to describe models to be printed in 3D printers.
.STEP (Standard for the Exchange of Product Data) is a standard for exchanging 3D models and product data between different CAD (Computer-Aided Design) programs. It is a common format in industry and is used to transfer detailed 3D models of components and products.