Generally, the copper tarnishes and turns dark and dull. This tarnishing occurs when the copper reacts with the air and a patina develops. The color of the patina will vary with the copper and what it is exposed to. Inside the house, copper will gradually get an antique penny brown color. But if the copper is exposed to water, the patina will gradually develop a bluish green look. The patina protects the copper from corrosion.
Method 1: Vinegar And Salt Method
1. Pour vinegar and salt over the copper.
2. Rub in. Keep rubbing to remove any tarnishing and grime.
3. Rinse off.
4. Polish up with a clean, soft, dry cloth.
Method 2: Vinegar And Salt Method (2)
1. Place 1 tablespoon salt and 1 cup white vinegar into a large pot. Fill with water.
2. Place the copper item into the pot.
3. Bring to a boil and continue boiling until the tarnish comes off.
4. Remove item. Once cooled, wash with soap in hot water. Rinse and dry.
Method 3: Lemon/Lime Method
1. Cut two lemons/limes into halves.
2. Rub over the tarnished areas until removed. If you want, add salt to the lemon/lime half.
3. Rinse and polish. You may rub copper item with a scotch brite pad before rinsing.
Method 4: Lemon And Salt Method
1. Squeeze lemon juice from one lemon.
2. Add salt and mix to form a paste.
3. Rub the paste over the copper with a soft cloth.
4. Rinse off with warm water and polish. Polish with beeswax for a lasting shine.
Method 5: Salt, Vinegar And Flour Method
1. Place 1 tablespoon of salt in 1 cup of white vinegar.
2. Make a paste by adding flour gradually. Mix together well.
3. Apply the paste to the copper and smear over tarnished areas.
4. Leave for 15 minutes to one hour.
5. Rinse with warm water and polish.
Method 6: Ketchup Method
1. Add the ketchup in a light to moderate film.
2. Let it sit for a few minutes.
3. Rub vigorously with a non-scratch pad.
4. Wash away. Try it on a penny to see if it works.