STL

STL (Stereolithography) is a file format used for 3D printing and computer-aided manufacturing (CAM). It represents the surface geometry of a 3D object as a mesh of triangles without color, texture, or other attributes. The format is widely supported by 3D modeling software, slicing tools, and 3D printers for creating physical objects from digital models.

Also known as: Stereolithography, Standard Tessellation Language, STL file, STL format, .stl

Why learn STL?

Developers should learn STL when working in fields like additive manufacturing, rapid prototyping, or CAD/CAM software development, as it is the de facto standard for 3D printing. It is essential for converting 3D models into printable instructions, enabling tasks such as generating G-code for printers or performing mesh analysis and repair in applications.

Learning Resources

• docs: STL Format Specification
• tutorial: All3DP STL Guide
• tutorial: Formlabs STL Tutorial
• course: 3D Printing Basics Course