Have you tried ThruPaint? http://sketchucation.com/forums/viewtopic.php?f=323&t=44552 or as unwrapping solution a commercial plugin: SketchUV http://sketchucation.com/forums/viewtopic.php?f=323&t=44501 I use ThruPaint and it works great for me. But all faces have to be quads for some tools. And you should enable "Ignore Distortion" For groups/components who contain ThruPaint mapping otherwise the maxwell plugin will export one per quad face!