STL Export for AutoCAD is a plug-in for AutoCAD. This plug-in gives AutoCAD the ability to export graphical data to ASCII as well as binary Stereolithography (STL) files. AutoCAD already has a "STLOUT" command which exports STL files. But unfortunately it has some limitations. Firstly, it exports only 3D Solids and that too only one at a time. It does not export 3D Face, Polygon Mesh and Polyface Mesh entities which can very well be a part of a STL model. STL Export for AutoCAD addresses these issues. With STL Export for AutoCAD you can now export multiple 3D Solid, 3D Face, Polygon Mesh and Polyface Mesh entities to a single STL file.This plug-in is very easy to use as it adds a new command to AutoCAD called "STLEX". All you have to do is type "STLEX" at the AutoCAD command prompt to begin exporting to a STL file.