well i spent the past 2 days removing the stripes,lettering,from an old police car. i had over 8 hrs on one side,scraping them off little by little.then i got those eraser wheels,and boy they make a mess,but it was a little faster. now all i have to do ,is wait for the blisters to heal. make sure you have several batteries if using a cordles drill.i have 4,and the 2 chargers coulnt keep up. well it gave me a chance to cool off that way. will buy the kit if i have to do another one. have fun folks