My step-dad painted an old tractor hood with a brush and it looks like it was powder coated. He was using International Harvester factory paint. Like was said earlier, you have to put it on thick and wet, so that it flows together. And, using a good brush helps too. Once the paint is on, DON'T try to go back to smooth it out or hit a spot that you missed or pick out the gnat that landed on your freshly painted frame. You have to wait until the coat is dry before you touch it.