This is my very first attempt to create a more complex material from scratch.
My goal was to build a texture for spaceships /stations, science-fiction-surfaces and so on...
Not a single imagemap is used - only procedural textures like voronoi, noise and brick I connect in the tree. No matter what size or what tiling, ther will be NO repetitions visible!
Because I'm just a blender-noob, I am sure, there are many ways to improve the material and I am sure, there a many mistakes in the tree. If someone like to make it better (correct), drop me a line and I will send you the .blend-file.