Step 3: Wire Brush Underside of Bumper Use the wire wheel to clean an area that extends one to two inches on either side of the crack for the whole length of the crack. Use the 60 grit sandpaper to roughen up the surface of the bumper.
Step 3: Wire Brush Underside of BumperUse the wire wheel to clean an area that extends one to two inches on either side of the crack for the whole length of the crack. Use the 60 grit sandpaper to roughen up the surface of the bumper.