I figured out how to apply a decal on the topside of a spline made cylinder with the anodized aluminum shader as a master shader ,thanks to your tips.But I ran into one problem after all my fussing with getting iy on there right. It was reflective just like the metal sheader, so I made a new layer of aluminum and applied it to the bottom, the main shader to the sides and a texture map on top. Bingo.