More serious rusting can lead to obvious holes in the metalwork, or as often happens in double skinned areas such as rear wheelarches or door bottoms, rust or blisters which appear because the panel has rusted quietly away from the inside. By the time the first signs show, the metal in that area is already beyond help. The only long term repair will involve a panel\section replacement, or if the area is very small and the rest of the panel is absolutely sound, body solder can be used effectively.
For a purely cosmetic temporary repair, the affected area can be sanded back to bare metal and the rusted area tapped in with a pointed hammer. This will in all probability produce some spectacular holes, which must then be filled with a glassfibre paste before final finishing with bodyfiller. Bodyfiller on its' own is porous and not recommended. Sand to shape and finish as described n the "Using Bodyfiller" section Even using glassfibre as a base, moisture can still attack the metal from the underside, so this can only be considered a temporary repair which should give a few months reprieve. If possible coat the underside of the repair with a wax based antirust coating, such as Waxoyl. >>>Continued
shape and finish as described n the "Using Bodyfiller" section Even using glassfibre as a base, moisture can still attack the metal from the underside, so this can only be considered a temporary repair which should give a few months reprieve. If possible coat the underside of the repair with a wax based antirust coating, such as Waxoyl. >>>