How to Remove a Dent in Car With a Hair Dryer. Removing a dent from your car can sometimes be quite costly, especially if you take your car to an auto body repair shop. However, as an alternative you can repair and remove some kinds of.
If rust penetrant alone doesn't work, create micro cracks in the rust with blows from a hammer, or even better, an air chisel and hammer bit. Then apply more rust penetrant and ”reshock“ the bolt head. Repeat until you can turn the bolt.