Putty knife: While a putty knife is designed for using wood filler or joint compound, its blunt end makes it ideal for scraping paint while reducing the chance of gouging the surface. One of the best things about using a putty knife to scrape paint is that it bends to allow you to get under the paint.

Plastic razor blades are made of a durable plastic material, which is designed to be gentle on surfaces while still being effective in removing unwanted materials. They are non-marring, which means they won't scratch or damage the surface of the vehicle.

While putty knives can come in flat or chiseled edge varieties and are generally flexible, paint scrapers are most often angled and stiff. The angled edge is what helps get under old paint more effectively than a straight blade would. Scrapers can also be used to remove residues on walls.