That method is ok for small projects, slow for complex objects with high poly count but is a solution...you could go for Pro version witch adds Export for DXF, DWG, 3DS, OBJ, PDF, EPS + LayOut 2. But for $500 you better of with Shark LT.(IMO) they say that is Based on Dassault’s ACIS™ modeling kernel (cool) that could give good compatibility with apps like (Autocad Revit etc. which are based on the same Kernel)... http://www.punchcad.com/products/shark_lt.htm