Import STL format.

[Anonymous]

Why can't ACAD import STL format while can export it? It's very common and should be one of the simplest formats ACAD can import.

The answer I found here is quite unsatisfactory.

https://forums.autodesk.com/t5/autocad-forum/stl-import/m-p/7743152#M918224

Does someone know any "real" reasons?

[autoid374ceb4990]

suraky:

I also create STL files from TINs and produce 3D terrain models.  I started doing this with R14 and wrote ARX code to read and write STL files directly from AutoCAD.  Unfortuntely the ARX code will not work with later AutoCAD versions.

Attached is a LISP file that will read ASCII STL files into AutoCAD as 3DFACEs.  I tried to convert it to read binary STL files but have been unsuccessful so far.