Hi Dear people from Cad Forum, I am doing renderizing an aluminum structure but the thing is I want to show the external face of the aluminum in one color (paint) and the internal as a natural aluminum could you please explain me how can i do this, it's a kind of a 3d detail section I am doing. Another thing is, I can show the shadows on the face of the solid but I'd like to show the shadows solid on the floor like it is suspended on the air could you give me a little bit push get done this.