Sanding Sand the damage area flat and smooth. Shallow Scratch: Use a flexible block and #240~#400~#600 sandpaper. Hole/Deep Gouge: Cut out and make any torn or burred area flat. Use a knife, flexible block and #180~#240 sandpapers. Air blowing/degreasing Clean the damaged area thoroughly. Use alcohol, and wax and grease remover.

Spraying primer Primer is used to fill cavities in the putty and primer surfacer. Spray primer on the exposed area. Spray the 2~3 coats of primer on 2~3 coats over the area you applied putty. Apply primer to the back of the bumper if the damage is a tear or hole. Bumper primer (Reference) Warm the primer if the ambient temperature is below 10°C (50°F). Follow the bumper primer manufacturer's instructions. Use the spray gun and brush. Drying NOTE: Take care not to let the heat lamp deform the bumper during the drying process. Dry the bumper primer thoroughly with an infrared dryer or other suitable method. Drying Time: Air dry 20°C (68°F) 20 minutes Force dry 60°C (140°F) 10 minutes