Chromed metal gives vehicles a vintage look, but using the process on every part would make the vehicle too heavy for profitable production. As a result, many chromed parts involve plastic instead. However, the chrome wears down over time, leaving owners to wonder if they can be repaired rather than replaced. Chrome plastic can be repaired, but the mechanical approach tends to be far too expensive and prohibitive for a private party. Thus the chemical approach remains the easier alternative by the do-it-yourself party.
Disconnect the part to be treated completely from anything it is attached to on the vehicle. Wash the part with soap and water. Break any lubricant or oil down with a degreaser if necessary. Dry off the cleaned part with a new towel.
Rub every surface of the part 400-grit sandpaper. Continue the process until the entire plastic part is rough and no longer glossy.
Spray the plastic part completely with a primer spray paint. Cover the object with one or two coats until it has a good covering for adhesion.
Prepare the primed plastic part for painting with a chemical-bonding chrome paint. Apply at least four coats of the chrome paint to the plastic part until it begins to develop a reflection. Let the paint cure for about two hours.
Buff the painted part with a clean cotton cloth or towel until the gloss appears in the paint. Let the finished part sit for a day or so. Re-install the plastic part in the vehicle when complete.
