Thanks freaky and severinianthony, I agree those containers look TOO clean, but I don’t want to get them too dirty either… There are different types and sizes of containers, I modelled a 40' standard type. Guess I will try to add mode variety in the following weeks. But right now what worries me most is the repetition issue that crashes mental ray renders. I have to find the way to duplicate them and organize the file properly… the hypergraph is a total mess.