Many common ingredients are great copper cleaners. Mother Nature Network recommends using a tablespoon of salt and a cup of white vinegar to clean copper with a cloth. A boiled salt and vinegar mixture in 3 cups of water also works, as does baking soda, either sprinkled on a cloth or combined with lemon juice.Continue Reading
Mother Nature Network mentions that using natural ingredients to clean copper is best since commercial cleaners contain harsher chemicals.
Ketchup is one common ingredient used to clean copper. Cutting a lemon and adding salt to it adds luster to copper as well. Baking soda, or unoxidized corn starch, and lemon juice turns into a paste that can clean and maintain copper finishes.
Do It Yourself mentions using a cup of white vinegar, a teaspoon of salt and some flour to make another form of paste. Allow to sit for 15 minutes to an hour on the copper before rinsing and drying.
Lemon and cream of tartar is another paste that can be used. This mixture should sit on copper for 5 minutes before being rinsed away and the copper dried.
To deal with bronze disease (copper discoloration), hot water and salt can be applied, but buttermilk is just as effective in removing blemishes. Finish by washing with ordinary soap and water, then drying.
Taking a penny and immersing it in a given solution is a great test for the best combination to clean copper.Learn more about Cleaning