When a designer chooses to save a solid model as an STL (Standard Tessellation Language) file, the surface of the object is encoded using a concept called tessellation, hence the meaning of the STL acronym.
Creating the solid model involves defining the component’s geometry and typically involves a combination of planes, extrusions, surfaces, and possibly strategic material removal.
The process to build an STL file first starts with the creation of the solid model by the CAD designer.
