Here are some pics of the gondolas i weathered a few years ago. i first took a lighter and melted the edges to give them that beat up look . i also heated up a screw driver with a lighter and then used the heated surface to bent the walls of the gondola. i painted several layers of rustall on it to get the rusty look. The loads however, are made of actual scrap iron that i got out of a real gondola car. i jumped inside the empty car and picked up these metal shavings from the bottom of the car. some of these shavings that i have would look good on ho scale models and some are small enough to look goood on n scale.