HIGH  |  | |
| Name | STereoLithography | ACIS SAT Model File |
| File extension | .stl | .sat, .sab, .asat, .asab |
| Original software | ||
| Binary | ■ | ■ |
| ASCII | ■ | ■ |
| Polygonal | ■ | |
| NURBS | ■ | |
| Solids | ■ | |
| Smoothing groups | ■ | |
| Textures, materials | ||
| Developer/Owner | Spatial | |
| Description | ||
| Specification | The StL Format | Download PDF |
| Format features | One of the most ubiquitous exchange formats polygonal geometry between CAD-systems. Can have both binary and ASCII-structure, which is why the same file can vary in size tenfold. See also PLY | File geometric kernel ACIS. Is used by CAD-systems such as AutoCAD, Inventor |
| Viewing software | GLC_Player (free), MeshLab (free) | RADF Viewer (free), Delcam Exchange 2012 (free) |
