If the A-pillar of the car is dented and the paint falls off, it is recommended to paint it, about 300 to 500. However, if the paint has not fallen off and you are very concerned about the original car paint, you can try the paint-free car dent repair technology, and you don't need to destroy the original car paint to repair the concave surface of the car body. The principle is actually very simple, that is, based on optics and mechanics, using the lever principle, the pits with different depths are slowly restored to their original appearance.
It is indeed credible and feasible to repair the dent in the car body with hot water, but this method has great limitations. If you encounter an iron or aluminum dent, this method will not work. It is obviously not feasible to repair deformed metal materials with boiling water. Different repair methods should be selected according to the deformation degree, such as automotive sheet metal plastic molding machine. This method is also not feasible if the paint surface of the car body cracks or falls off. We can also buy a set of such sag repair tools online, which is not expensive, only a few tens of dollars.