How to Repair a Broken Car Bumper?
1 Answers
Car bumpers are mostly made of polypropylene plastic and are primarily located at the front (front bumper) and rear (rear bumper) of the vehicle. The repair methods for a broken bumper are as follows: 1. First, open the hood and observe how to remove the bumper. The removal method can vary depending on the car model, so it's advisable to look it up. 2. Align the cracks on the bumper and secure them with transparent tape to prevent deformation of both sides during the repair process. 3. Plug in the prepared soldering iron and flip the bumper over to inspect the cracks on the inside. Wait for the soldering iron to heat up, then use it to melt and fix the internal cracks of the bumper. Operate along the direction of the cracks. 4. Use a plastic welding gun (hot air gun) to weld along the cracks with the prepared welding rod. Remove the transparent tape used earlier and also use the soldering iron to trace along the cracks. 5. Next, use coarse sandpaper to smooth the areas treated with the soldering iron and those that need repainting. Once smoothed, apply putty and let it dry. Then, use wet sandpaper, starting with coarse grit and finishing with fine grit for a smooth surface. Rinse with water, dry with a clean cloth, and wait for it to dry completely before painting. 6. Before spraying paint, shake the spray paint well. Maintain a distance of about 20 cm from the surface, avoiding direct spraying. Maintain a slight angle and allow about 15 minutes between each coat, applying 5-6 layers in total. After the color paint, apply a clear coat to enhance the gloss of the vehicle's paint. If not done properly, the finish may lack shine, develop wavy lines, horizontal streaks, or bubbles. Let it dry for a few hours before reinstalling the bumper front panel. This will effectively repair the cracks.
