What kind of glue is good for bonding car bumpers?

[MacTucker]

AB glue is good for bonding car bumpers. The functions of the bumper: 1. Safety protection; 2. Mitigating external impact; 3. Protecting pedestrians; 4. Decorative purpose; 5. Improving the vehicle's aerodynamics. The bumper consists of an outer panel, cushioning material, and a crossbeam. The process of bumper painting is: 1. Clean the bumper; 2. Dry the moisture; 3. Spray the surface; 4. Sand and wipe clean; 5. Flame treatment; 6. Electrostatic dust removal; 7. Spray painting operation; 8. Spray gray primer; 9. Spray the pre-mixed color paint, then spray clear gloss paint, polish after baking.

[EmeryLee]

As someone who often tinkers with my car, I think the most worry-free adhesive for fixing bumpers is epoxy AB glue, the kind that comes in two tubes and needs to be mixed. I used to try regular 502 glue, but it cracked again after just a few days, which was scary when driving at high speeds. Now I opt for 3M or Loctite AB glue, which costs just over ten bucks per repair. The process is actually simple: first, clean the crack on the bumper thoroughly, wipe off any grease with alcohol, then mix the glue and apply it evenly on the surface, clamp it tightly, and wait a day for it to cure. Bumpers are usually made of plastic, and AB glue has strong adhesion and is wear-resistant, so it won’t come off during car washes or rainy days. But a reminder: if the crack is too large or the internal bracket is damaged, don’t force a DIY fix—take it to a repair shop to avoid potential hazards. Regular maintenance and avoiding collisions can extend your car’s lifespan and save you money and effort.

[BethanyMarie]

I'm a young DIY car repair enthusiast who prefers using polyurethane automotive adhesive for bumper repairs. This stuff is commonly found in auto parts stores, costing around 20-30 yuan for a bottle that lasts a long time. Last time when my bumper got a scratch, I tried hot melt glue but it couldn't withstand heat and loosened under sunlight. Then I switched to polyurethane adhesive with much better results: first clean and sand the crack smooth, apply the adhesive evenly, and temporarily secure it with tape overnight. The next day when the adhesive hardened, it became extremely sturdy and could handle minor bumps. Personally I find it more convenient to use than AB glue since it's ready to use without mixing. But remember to wear gloves for hand protection and work in a ventilated area for safety. Checking forum posts often helps learn money-saving yet practical tips.

[DylanDella]

As a car owner with years of driving experience, I prioritize safety. For cracked bumpers, I recommend using professional automotive adhesives like epoxy-based ones. I once tried using regular household glue, but it loosened while driving on the highway, nearly causing an accident. Now I only trust branded products like Loctite's plastic-specific adhesive. The key is to ensure the surface is clean, free of dust and oil, apply the adhesive, and apply pressure for over 12 hours to set. If you're unsure, it's safer to spend some money and have experts at a repair shop handle it. Daily maintenance to reduce wear is better than repairs—prevention is key.