The “.STL” file extension is associated with Stereolithography files, a common file format used in 3D printing and computer-aided design (CAD). STL files contain a representation of 3D models using a series of connected triangles, defining the geometry of the object.

How to open an STL file:

To open and view an STL file, you would typically use 3D modeling software, CAD software, or specialized STL viewers. Here are the steps:

1. 3D Modeling Software:

2. CAD Software:

3. STL Viewers:

Programs that may open STL files:

1. Autodesk AutoCAD:

2. Blender:

3. MeshLab:

4. Windows 3D Builder:

Various apps that use files with STL extension: