The purpose of sanding is to give the tubes a good finish and surface prep them for painting.
Surface prep depends on the epoxy system used. For West Systems, the epoxy can be sanded and will adhere to Bondo.
The purpose of sanding is to give the tubes a good finish and surface prep them for painting.
Surface prep depends on the epoxy system used. For West Systems, the epoxy can be sanded and will adhere to Bondo.