It stores geometry data using tessellation, which is the process of covering a surface with triangles to create a 3D model. Its long history makes it compatible with most 3D CAD software and 3D printing hardware and software. STL (Standard Tessellation Language) is considered to be the standard in 3D printing, having been created in 1987 by the inventor of 3D printing, Chuck Hull.
The most commonly used 3D printing file formats today are STL, OBJ, AMF, and 3MF. Thus, we now need file formats specifically for 3D printing. Standard 3D CAD file formats, such as STEP, IPT, and SLDPRT, do not always contain this information or are not coded for 3D printing. There are specific types of information, such as geometry, texture, color, and material, that are needed for the printing process. The file format determines the information contained in the file and is necessary to generate the appropriate machine code. The information stored in the CAD file is crucial for successful printing. That way the model can be sent directly in the proper file format. Some 3D printers come with their own slicing software.
This is a set of instructions for the 3D printer on how to move to produce the final object. The slicing software analyzes the layers and creates G-Code. After a 3D model is created and saved in a compatible file format, it must be sent to a slicing software that divides the solid model into many thin horizontal layers. 3D printers construct parts by building them layer by layer.
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