I used those hard to find but excellent small gray plastic razor blades from an Auto Parts store..along with the hair dryer and a strong fishing line, since the dental floss kept breaking..you do have to work carefully not to scratch the paint underneath and follow all the helpful instructions..the results are just amazing...especially the cool Stinger script that looks better than Maserati when you are done..since we don't have front plates here, I added another 14 inch Stinger script right on the front bumper as well...niice...