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One of the toughest materials to paint is plastic. Paint often peels and flakes right off the plastic's slick surface.
Krylon Fusion, a much-ballyhooed new spray paint, claims to be specifically formulated for plastic, to stick in one coat without sanding. We paid about $5 for a 12-ounce can. We also tested another new product, Rust-Oleum Plastic Primer, also formulated for plastic. We paid $3.50 for 12 ounces.
Both products can adhere to plastic, our tests show, but you can't just spray away. The plastic must first be cleaned and wiped with paint thinner or, if weathered, ammonia. Instructions aside, a light sanding helps--especially with slick, "waxy" plastics known as HDPE and polypropylene. (They're identified with a recycling symbol containing a 2 or 5, respectively.) Paints that didn't make claims about ...