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.
The maker suggests the yellow blades will remove barnacles, and we tried this, but the blades dulled quickly and two broke. Nevertheless, they are a welcome addition to our toolbox. Also available at some Ace Hardwares, a five-pack of blades sells for $6 at westmarine.com.