Making your own flat cars for model railroads

Making my own flat cars so that I have an inventory of them. I used S gauge flat cars and converted them to ON30 flat cars so that if I have an idea for a load, I can just grab one of these out of my inventory and create the load. ‪@YMXMD‬ If you want to see how I weather flat cars, see:    • Model trains: Weathering Flat Cars