Hi Grimpup, This version is much improved over the last. I'm drawn to the lower portion of the pipe but then back up to explore. The forum had a discussion on brick bumps earlier. I think that those files are still up so a search for that may help. Ok, Ok, I'll admit it. I'm a spline junkie. What I like about the spline modeler though is that you can more accuratly control procedural textures (or any other texture for that matter) more concisely. The issue that you are having on the pipes (vertex I assume) is that the facets are elongated. Consequently, the textures stretch to fit. While the above image isn't the look that you are going for it is a display of the difference in mapping the corrosion shader from the free stuff section. Mark