I've gone through paint ONCE! It was on an old volvo that had single stage paint. It had a hard body line on it and i figured i needed to get in the crack real well. I got the crack looking beautifull with just a few passes but the line got burnt. Lucky for my i just layed down some new paint with a bush toucher sanded and rebuffed. Gotta love single stage. If it had been base/clear i would have been screwed.