STL Import for IntelliCAD - Version 1.0 STL Import for IntelliCAD is a Stereolithography STL file import plug-in for IntelliCAD powered applications. This plug-in gives IntelliCAD powered applications the ability to import geometric data from ASCII and Binary STL files. STL Import for IntelliCAD is very easy to use as it adds a new command to the IntelliCAD powered application called "STLImport". Simply type "STLImport" at the command prompt and select a STLfile to import.