Severe Paint Imperfections

Severe scratches and rock chips. If the scratch is so deep that it can be felt with your fingernail, the best way is to polish the scratch in a perpendicular motion to reduce the visibility of the scratch. (Essentially it is not worth reducing the paint thickness to get down to the base of the scratch and eliminate it entirely.) If the scratch is so deep that you can see the primer paint or metal, or it goes through the clear coat on two stage paint, the only correction is to use touch up paint.