How To Block Sand a Car For Paint
Painting a car can make it look like new. The surface of a car must always be prepared before it is painted. Block sanding is one method that can be used to prepare the surface of a car. This allows the surface to be smooth and flat. This is the type of surface you want for your car because it makes the paint look better.
Materials Needed:
- Sanding block
- Dark primer
- 120-grit sandpaper
- 320-grit sandpaper
- 600-grit sandpaper
- Glazing compound
- Color primer
Instructions:
- Choose the best sanding block for the process. Long and flat sanding blocks are better for flat areas. Use a round sanding block for round areas.
- Apply a dark primer over the entire car. The dark primer allows you to see spots over the car when you start sanding it.
- Apply 320-grit sandpaper around the sanding block. Sand the car with steady movements. Wipe the dust with a dry cloth as you move along. You will notice low spots as you sand. Try not to sand in that area too much. This is where you will use filling compounds. You will also be able to view any high spots on the surface of the car.
- Use a glazing compound to fill in any low spots on the car. Allow the glazing compound to dry according to the directions on the package.
- Wrap 120-grit sandpaper around the sanding block. Sand over the entire surface of the car. Remove the 120-grit sandpaper and apply 320-grit sandpaper to the sanding block and sand the entire surface of the car. Remove the 320-grit sandpaper and apply 600-grit sandpaper to the sanding block and sand the entire surface of the car.
- Spray the entire surface of the car with the color of primer you have chosen.