STEP OUT A MODEL FOR 3D
or save as for 2d drawings
AutoCAD (2012) will import a *.x_t or *.x_b, which is the most faithful export from SolidWorks. That is what I’ve been using.
Unless I am missing something here......All you need to do is SaveAs and change the "Save as type:" pull down menu to DWG (*.dwg). Right below that selection is a button that says Options... Click on the Options... button and select which release of AutoCAD you want to export to. Usually all I have to change is the release version, the rest of the default settings work for us.