Repairing large holes caused by corrosion on your car body is a difficult, multi-step process. You begin by carefully sanding off any rust surrounding the hole along with any chipped or cracked paint. This process must be done until bare metal on the affected area is exposed. An adhesive body patch and fibreglass filler are then applied, then sanded down to size after the filler is dry. More smoothening filler is applied, then sanded and primed to accept a layer of new paint.This process may sound simple, but it is a complicated process that requires the use of specific techniques and special chemicals that may be dangerous to handle. It is advised that you don’t perform this type of repairs yourself, and lessen the risk of hazard or a botched repair job by hiring expert car body repair specialists via Airtasker.