Made these scrap metal loads for a friend. We're swapping for two K Line cabooses that he melted by letting the smoke units go dry. The first one is mostly real metal, with some plastic pieces that fit the bill mixed in. I also made some saw mill blades, both circular and band. I used some mesh sanding pads from a floor buffer to make scrap chain link fence. The second is a mixture of band saw chips mixed with rusted metal chips on a bed of masonite, and held together with urethane floor finish. I know there are many modelers who would not use anything with real metal on the layout for fear of shorts, but some of us live dangerously!