It looks to me as if the Wings3D program is generating a NURBS model, rather than a polygon model. These are two different 3d technologies. A polygon model is made of "faces" (polygons), and vertices, with the final geometry of the model calculated from the vertices. A NURBS model ("Nonuniform Rational B-Splines") uses an entirely different technology and will always give a smooth curve - it doesn't use polygons. The technology is something like a Bezier curve - curved lines extending from points, rather than straight lines, as in polygons. NURBS models require more horsepower to compute, and the software that makes them is more complex. Typically, NURBS models are converted to a polygon representation before they can be saved in .3ds file format. (So, they end up as polygons, but typically have more faces in wireframe mode, and the file size is larger.) Understandable?