How to Refinish an Alloy Surface

An alloy wheel.

Alloy is more aesthetically pleasing than steel and has functional benefits, including its light weight and durability. Alloy wheels improve steering and provide greater breaking power. If the surface is scuffed, refinishing can return the alloy to its original beauty. To ensure the best results from a refinishing job, initial cleaning, sanding and uniform painting are essential.

Things You'll Need

• Detergent
• Paint thinner
• Water
• Rag
• Masking tape
• Spot putty
• Sandpaper (240-grit, 400 or 600-grit)
• Scratch-filler primer
• Spray paint
• Clear coat
• Polish

Instructions

1. Clean the alloy thoroughly to remove any dirt, grime and grease. Use paint thinner to remove paint stains. Wash off. Wipe off with a dry rag.

2. Tape off surrounding areas, such as, for alloy wheels, the tire.

3. Apply a moderate amount of spot putty (or alloy wheel repair putty) onto the damaged section. It is important to work closely on the damaged section rather than the whole alloy surface. Let the putty dry for about 10 minutes.

4. Sand the putty with 240-grit sand paper. Feather sand the putty.

5. Use 400-grit sand paper to sand the rest of the putty until it looks and feels even with the rest of the alloy's surface.

6. Spray scratch-filler primer onto the repaired section and wipe off any overspray with a rag.

7. Put additional spot putty onto the damaged section and sand with 240-grit sandpaper once again until even with the surface.

8. Spray a second coat of primer and let it dry.

9. Feather sand the primed area with 400- to 600-grit sandpaper.

10. Coat the entire alloy surface with spray paint. Be sure to shake the can for a full minute before spraying. Spray evenly over the surface. Let the surface completely dry.

11. Spray a second coat. Let the coat dry completely. Spray another coat if needed.

12. Spray two coats of clear coat with 20 to 30 minutes of drying time in between each layer. Let it dry.

13. Finish by polishing the alloy.

Tips & Warnings

• Wrap the sandpaper around a small block of wood to facilitate sanding.

References

• Guide to Wheel Scuff Repair on Alloy Wheels