How To Paint Chrome Bumpers: 15 Steps (with Pictures) - WikiHow

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1 Practice your spraying technique. If you've never used a spray gun before, practicing on a scrap piece of metal is a good idea. Hold the spray gun 6 inches (15.2 cm) away from the surface of the metal, and spray the paint back and forth in even motions. To avoid drips or areas with heavy paint, only press down on the paint trigger when your arm is in motion.[11] X Research source
- If you do have drips, you can use 2000-grit wet sandpaper to gently sand down the paint run.
2 Spray the paint onto the bumper in light, even coats. Once you're confident in your spraying technique, apply the paint in an even layer over the bumper. Use 3-4 coats, and make sure to check for any drips that will take away from the paint’s appearance. Let each coat dry entirely before adding an additional one.
- For correct drying times, check your paint's directions to see how long to wait between coats.
3 Apply clear coats to the painted bumper. After you’re satisfied with the bumper’s color and all of the paint coats have dried, apply 2-3 clear coats evenly. While mostly referred to as car clear coats, they're also called top coats or high glosses. The clear coat will help preserve the color, as well as protect the bumper from sun damage, chipping, dirt, chemicals, and many other things that could harm your bumper’s surface.[12]
4 Reattach the bumper to your vehicle once it’s completely dry. Once your bumper’s final coat is dry, you’re ready to reattach it to your vehicle! Reattach the screws and bolts to the bumper and inspect your newly-finished paint job.