1.As when using any paint, attention to detail is an essential part of the preparation. Thorough scuffing and sanding is required to ensure proper adhesion, and attention must be paid to the gloss or the surface being painted. Primers, such as the types commonly found on aftermarket parts, must be removed prior to painting as these primers are often slick and contain silicates, which water-based (WB) paints will not adhere to. When painting plastic parts, especially used parts that have been waxed, an adhesion promoter should be used as the silicates used in the wax may prevent the paint from properly adhering to the plastic.