By
eHow Home & Garden Editor
Difficulty: Moderately Easy
Things You’ll Need:
Step1
Mix 4 tbsp. very fine pumice powder (yes, pumice is an abrasive) with 1/4 c. citric acid.
Step2
Add 1 tbsp. finely ground silica and mix thoroughly. (Silica will help resist moisture.)
Step3
Wet a soft cloth with water and rub the polish onto the metal with it.
Step4
Buff to a shine with a clean, dry cloth.