I want to export my 3d model done on alias, but I want to do it so that only the outside is exported, then the visible lines of the object, without seeing the isoparametrics of any surface, which happens to me as soon as I export the model in .dwg and open it on AutoCAD. How can I export only visible surfaces without isoparametrics? I also disabled the export options of invisible and mesh but it doesn’t work