Option 1:Natural acids such as vinegar and lemon juice can be used to clean or polish brass and copper.
Option 3:Combine:3 teaspoons salt1 tablespoon flourenough white distilled vinegar to make a pasteScoop the paste onto a clean sponge and polish clean. Rinse with hot water and buff dry with a soft cloth.
Option 4: Soak overnight in a solution of half white distilled vinegar, and half water. Rinse with hot water and wipe dry with a soft cloth.
Option 5: Cover item with catsup. Let stand for a few minutes, then rinse thoroughly and dry.
Prevent tarnished brass: Rub with a cloth moistened with olive oil after polishing.
Remove lacquer: Submerge in boiling water with a few teaspoons each of baking soda and washing soda. Wear gloves. (Never use baking soda on aluminum, as it will pit the surface.)
Remove rust: Wet a sheet of aluminum foil with water. Rub just the rust with the wet foil. (Foil will scratch chrome.)