Body Work VS. Paint Work
First let us define not only the difference between body and paint work but where one stops and the other begins. Body work ends at the point where you pick up your sander or sandpaper to begin feathering the paint for primer. In other words, you've removed the dents, filled the surface irregularities with bondo or whatever and are just about ready to apply primer but must remove the scratches first and also make the step from the metal to the surface of the old paint a smooth transition ( feathering ), this is where the body work stops and the paint work begins. With this in mind you'll know where to look on this site for information, tools and materials that can help you with the area of your project that needs help at this time.