Name | STereoLithography | Rhino OpenNURBS |
File extension | .stl | .3dm |
Original software | Rhinoceros 3D | |
Binary | ■ | ■ |
ASCII | ■ | |
Polygonal | ■ | ■ |
NURBS | ■ | |
Solids | ■ | |
Smoothing groups | ■ | |
Textures, materials | ■ | |
Developer/Owner | Robert McNeel & Associates | |
Description | ||
Specification | The StL Format | OpenNURBS |
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 | The format of the first NURBS-Modeling software for Windows. Is currently open, so there are converters from/to lots of formats |
Viewing software | GLC_Player (free), MeshLab (free) | Deep View (free) |