How to Repair a Damaged Bumper?
2 Answers
Methods for repairing a damaged bumper: 1. Inspect the location and extent of the bumper's cracking damage; 2. Drill a small hole at the end of the cracked area to prevent further expansion of the crack; 3. Use a grinder with sanding discs to remove the paint coating on the bumper, creating inclined slopes on both sides of the crack to reserve sufficient space; 4. Cut a stainless steel reinforcement mesh to a size that can cover the crack, with folded edges; 5. Perform dust and oil removal on the bumper surface to prepare for welding the reinforcement mesh; 6. Fill the area with specialized bumper repair fiberglass adhesive.
I'm the kind of person who enjoys fixing things myself. Last time when my car's bumper got scratched by a neighbor backing up, I bought a touch-up pen to handle it. First, I cleaned and dried the surface, then lightly sanded it smooth with sandpaper. After applying primer and waiting a few hours for it to dry thoroughly, I carefully filled in the paint. Finally, I sprayed a layer of clear coat for protection. The DIY repair only cost me a few dozen yuan, saving the money I would have spent at a repair shop. However, if the crack is deep or there's a large dent in the plastic, DIY isn't reliable as it may hide safety hazards. In such cases, it's better to find a professional who can use a heat gun or replace the part entirely. Over my years of car ownership, I've learned that minor scratches are suitable for DIY repairs, but it's crucial to use paint that matches the color and avoid applying it too thickly, otherwise it may bubble.
