How to repair the small pit on the roof? There are two methods to repair the depression without trace, and each method needs corresponding tools, but the basic principle is the same. Repairing incremental launching method without trace in the depression: incremental launching method had to use various hooks of different sizes to find a way to push out the depression; Because the location of the sag may make it difficult for the hook to handle the sag, the corresponding car body parts can be removed for repair after the sag is repaired; Lever out the sag with a hook, and then tap the sag gently with a rubber hammer and leveling pen, and the sag of the car body will gradually decrease; The whole process is "slow work and fine work". If you are too anxious and overexert, the damage of depression may be aggravated. Suction and drawing method for seamless repair of dents: The suction and drawing method requires tools such as hot melt adhesive, suction and drawing gasket, suction and drawing device, adhesive remover, rubber hammer, spirit level, etc. Step 2: First, choose a sucker with the right size. The bigger the cushion, the greater the suction. Apply hot melt adhesive evenly on the suction pad and quickly stick to the concave surface. You can't start smoking right away, because the hot melt adhesive is not dry yet. Because the gasket is too short to be forcibly pulled out, the suction device is connected with the gasket; If the depression is lowered or slightly raised during the first suction, the effect will be achieved. If the depression cannot be pulled out, the suction and pulling steps need to be repeated many times; At this time, the glue remover will come in handy, because hot melt adhesive may leave residual glue on the car paint, so spraying the glue remover can clean the residual glue; Use rubber hammer and leveling pen to beat the concave position continuously, so that the slightly convex surface slowly returns to normal state. The cost of repairing a traceless dent depends on the degree, type, location and area of the dent in the car body. It takes about 200-400 yuan to repair an ordinary dent. @20 19