Model better. ;) Carrara seeks to create the smallest file size possible. Triangles take less memory that quads because there is one less point per facet. To prevent that, carefully use the Hex tesselate tools where you will be adding detail so you can work with quads you set up. Then, prior to export for .obj or .car, collapse all dynamic geometry in Hex. (you don't have to save your .hxn file this way, you can undo the collapse immediatly after you do the export) You'll still have to do the crease action but at least ther'll be no polygon surprises. Mark