A cracked bumper is one of the very most common car body repairs carried out by clever (Small to Medium Area Repair Techniques) repair operatives. Fenders are made to handle for example being hit by a shopping trolley, low speed scraping collisions and car park barriers along with other small impacts, low impact collisions. Frequently this kind of injury results in scores, scuffs and scrapes which a mobile auto body repair technician with a few auto body filler, primer, paint and lacquer can repairs quickly. Sometimes nevertheless, a fracture will appear and divide the bumper and this must be dealt with differently.
If your cracked bumper isn’t repaired or the repair is completed with filler that was normal, the bumper’s structural integrity is compromised. It is essential that the fender crack is treated and rejoined with a tough yet flexible resin. A particular technique is used to accomplish this which must be carried out every time.
Typically the crack doesn’t appear severe, it often has the appearance of a hairline fracture and it’s tempting to run a small filler over it and treat that as fixed. The effect of that is that the next time the bumper is put under any pressure at all, the crack will reappear and generally widen. The crack should be widened, efficiently worsening the damage, initially so that there is enough of an opening for the resin to fit in. There is a hole drilled at each end of the crack, half on and half off the very end. This permanently ceases the crack from jogging again. A v-shaped groove must be made right down the middle of the crack, wide enough to create a hole without going off the border of the crack.
A strip of net is then Alloy Wheel Repair Billericay put on the interior of the bumper all along the damage – this will hold the resin in place while it hardens and may be left there afterwards. A mix of resin and hardener, especially formulated for bumper repairs like this, is then injected into each of the holes which were drilled. The mesh backing offers the purchase needed to avoid the resin going direct through. The goal here would be to efficiently “stitch” the repair together.
After using the resin, a body filler spreader (or ideally specialist contouring movie) is used to smooth the repair on the top side of the bumper to minimise the sanding which will be demanded afterwards. Care must be taken if sanded, as the bumper resin can melt. After the resin has fully hardened the fender is structurally sound again and will be sanded, filled, primed, painted and lacquered as normal. Result – a perfect fender repair