Hello : Does anybody know how to attach a different material to the front and back side of a polygon? What I am trying to achieve is that the front side of the polygon is lit differently than the back side. I was reading a tutorial which said that its possible to do it and you have to disable the culling and use the method "setBackFaceNormalFlip(true)" so that the normals of the back facing polygons should be flipped prior to lighting. It never explained how to actually apply different material on both sides of the polygon? Is it possible? Any help would be highly appreciated Thanks ===================================================================== To subscribe/unsubscribe, send mail to [EMAIL PROTECTED] Java 3D Home Page: http://java.sun.com/products/java-media/3D/