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How To

Finishing Aluminum to a Mirror Finish

Contributor
By Larry Parr
eHow Contributing Writer
(0 Ratings)

Highly polished aluminum can be so shiny and reflective as to be mirror-like. Fortunately, getting your aluminum car rims or your aluminum appliances to shine with a mirror-like finish is not terribly difficult as long as you are willing to put a little time and elbow grease into making it happen.

Difficulty: Moderately Easy
Instructions

Things You'll Need:

  • Aluminum object
  • 400-grit sandpaper
  • 800-grit sandpaper
  • 1,200-grit sandpaper
  • 0000-grade steel wool
  • 00000-grade steel wool
  • Aluminum polish
  • Polishing cloth(s)
  • Spray lacquer
  • Dish soap
  • 100% cotton cloths
  1. Step 1

    Wash the item with dish soap and warm water and pat dry with a 100% cotton towel.

  2. Step 2

    Sand the item with 400-grit sandpaper. Sand in a circular motion. Sand until you can no longer feel any scratches or pitting when you run your fingernail across the object.

  3. Step 3

    Wash with warm water and pat dry with cotton towel.

  4. Step 4

    Sand lightly with 800-grit sandpaper. Sand in only one direction (not in circular motions). Remove any larger blemishes that still remain. Wipe clean with a cotton towel.

  5. Step 5

    Sand very lightly with 1,200-grit paper. Sand in only one direction. Sand in order to erase any microscopic scratches left by the previous sanding. Your item should be looking very shiny by this time.

  6. Step 6

    Wipe briskly but lightly in only one direction with 0000-grade steel wool. Bring out as much of a shine as you can. Wipe clean with cotton towel.

  7. Step 7

    Apply a thin coat of aluminum polish. Wipe gently in one direction with a clean cotton towel. Wash off with warm soapy water. Rinse. Pat dry with clean cotton towel.

  8. Step 8

    Your item should now be mirror-like. Spray a coat of clear lacquer onto your item. Wait until completely dry and then gently wipe with 00000-grade steel wool. Wipe clean with cotton towel and spray a second coat of clear lacquer. Allow to dry.

Tips & Warnings
  • Try to keep fingerprints off of your item from Step 6 onward.
  • When spraying lacquer you may wish to wear eye protection and a breathing mask.
  • Use a light sanding touch once you have completed your sanding with the 400-grit paper.

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