2. Sheet metal, also called cold working, is one of the important means of automobile maintenance technology.
3. The sheet metal repairman uses tools to repair the deformed parts of the car. It is necessary to beat the deformed part with a hammer to restore it to its original approximate appearance, and then pull back a small part of the sunken place with a sheet metal correction tool.
4. After a round of sheet metal correction, scrape the ash. Grind the deformed part with a grinder until it is consistent with the body line to make it smooth.