The effect of car dent repair varies greatly from store to store. The dents repaired by general automobile dent repair technicians can't see any problems from the front. When the light is strong, there will still be a slight dent when viewed from the side! Under the strong light, we can see that the arrangement of paint lines in the depression has changed.
The master with the highest technical level can't see anything wrong with the naked eye, and the arrangement and spacing of paint lines in the repaired areas are the same. Therefore, the most practical method is to move your eyes back and forth from the concave edge under the illumination of the lamp board to observe whether the paint lines are evenly arranged.