Plastic scrapers have been around for a while. They are popular among painters, woodworkers, and auto detailers. For boaters, they make sense for jobs that need to be done quickly without scratching a delicate surface. However, for a fine cut and a lasting edge, metal blades remain the best choice. We tested the new ScrapeRite plastic razor blades on a variety of surfaces and found them handy for removing vinyl, cleaning dried paint on varnished wood, and trimming sealant. The blades come in three levels of hardness: red, general purpose blades for delicate surfaces like paint or varnish; blue, a polycarbonate blade for use on fiberglass and gelcoat; and yellow, acrylic blades for use on hard flat surfaces.