If the dent of the door is not big, the small dent of the door can be repaired with a small suction cup, and the suction cup can be adsorbed at the dent; If the dent is large, you can prepare a few more and absorb them evenly in the center of the dent. Then pull it out with the help of tools. The repair of small dents in auto repair shops is generally to grind off the car paint at the dents, then flatten it with a meson machine, and finally repaint it. The repair of the big depression is to cut off the door skin and then weld a new piece of iron sheet.

Repair technology of car door depression

In addition, you can also buy such a set of sag repair tools online, which is not expensive and can be owned for tens of dollars. Clean up the concave part first, then put the special glue into the glue gun and plug in the power supply to preheat for about 7 minutes. Then choose the appropriate gasket, pay attention to the large gasket suitable for large depressions. The larger the washer, the greater the traction. Then use a glue gun to evenly coat the gasket with sol, quickly paste it to the concave position, and gently press it until the special glue is fixed. Align the hole in the middle of the traction bridge with the attached gasket, put the nut on the gasket screw and tighten it, then turn the nut until the depression is flat. After the repair is completed, remove the tools, then spray alcohol on the residual glue on the car body, and finally clean it up with a spatula.

If you don't want to do it yourself, you can also give it to the repair shop outside. They have a technique called dent repair, also called light sheet metal. However, the method of repairing the depression is actually similar to doing it yourself. It sucks out the depression with a sucker, then reaches into the back of the depression with the help of a hook, then slowly ejects it, and finally handles the protruding part with a rubber hammer.