People who are engaged in collecting or searching for treasures must know effective methods to cope with different pollution. There are a number of proven methods for cleaning copper coins at home without much effort and financial costs.
How to clean a copper coin at home?
Ancient coins made of copper are rare and valuable for collectors and numismatists. After a while, they form a patina, which gives the product nobility and is appreciated by specialists. Virtually all the methods below, remove it, so the products are ugly. Understanding how to clean a copper coin at home , it is worth mentioning and the method how to impose an artificial patina:
- Dissolve in 0.5 liters of water 25 g of copper sulfate and 2.5 g of potassium permanganate.
- Prepare the prepared solution to a temperature of 80-90 ° C. Send coins there and periodically turn them around to control the result.
- After that, dry the products, and cover with a protective coating, for example, a mixture of alcohol and benzene. Take the components in equal proportions.
How to clean a copper coin from a green deposit?
When interacting with oxygen, the surface of the products is covered with a green coating, which spoils the appearance. There are several ways how to clean a copper coin from oxide:
- The most unusual way of cleaning, but at the same time not less effective, involves the use of yogurt. Soak the coins in a sour-milk drink for a few hours. Then rinse them in plain water. If there is a strong soiling, it will not be possible to remove them in this way.
- A soap solution is a safe and gentle method of action. Take household or child's soap, which must be crushed and poured with boiling water. In a thick solution, put the products and leave them for several hours. If necessary, repeat this procedure several times.
- Another way, how to clean a copper coin, is based on the use of ammonia . Dip it into the product for half a minute, and then clean them with a brush. Repeat until the desired result is achieved.
How to clean a copper coin from rust?
Another common problem, but it can be dealt with using methods not proven by one numismatist. If you are interested in how to clean a copper coin from rust, then use these tools:
- Good results are given by Trilon-B, a mixture intended for cleaning copper. This tool can be bought at a jewelry store. Using non-metallic tweezers, lower the coins into the tool for 10-15 minutes. After that, get them out, rinse and dry. If all the contaminants have not been removed, then the procedure can be performed 2-3 more times.
- You can clean the coin with the popular carbonated drink "Coca-cola". Pour it into the glass container and lower the product there. To clean them from the black plaque, you need to leave everything for a week. To speed up the reaction, place a container with soaked coins near the heat source.
How to clean a copper coin from black?
In order to remove the ugly black plaque, it is best to use tools that include several components that provide an excellent action. Finding out how to clean an old copper coin, pay attention to such recipes:
- Mix kerosene and chalk. The resulting gruel is applied to the products and rubbed until dirt and gloss are removed.
- Another technique is how easy it is to clean a copper coin - using a mixture of oxalic acid, turpentine and ethyl alcohol. Mix the ingredients in equal proportions. Using a wet cloth, apply the preparation and rub it gently.
How can I clean a copper coin?
To remove dirt and give a beautiful shine, you do not need to buy expensive compounds, as many people will find effective means at home. There are several most popular options than cleaning coins from copper to gloss:
- Electrolysis is a common method of removing contaminants. In a glass container, pour the water and put the soda, taking into account the proportion that 1 liter should account for 2 tbsp. spoons. To the coin, using a clamp, attach the negative wire, and to the graphite element - a positive one. Lower the element into the solution and plug everything into the network. The process of electrolysis will last 30-60 minutes.
- Cleaning of coins can be carried out by GOI paste, which contains fine abrasive particles, and they are good at coping with dirt and oxides. Use this method only on inexpensive coins.
- Another way to clean the copper coin at home is to use oil. Pour it into a pan in such volume that the level was 2-3 cm, and put it on the fire. Boil and put coins in it, but do it neatly, as the oil will spray. Soak for 10-15 minutes.
How to clean copper coins with citric acid?
This remedy is effective and it will help restore the original look to the coin, but it should be borne in mind that the acid can remove the patina, which reduces the value of the product. If you are interested in how to clean an old copper coin with citric acid, then first dissolve the powder in water and, using tweezers, put the product into the solution for only a few seconds. After this, remove and rinse.
Can I clean copper coins with sulfuric acid?
Aggressive in its action is sulfuric acid, so use only a weak solution of 5%, and it is better to replace it with a more gentle 10% solution of formic acid, which should be heated to 70 ° C. This product perfectly softens and removes oxides and carbon compounds. It should be taken into account that this method is not suitable for valuable coins, since it removes the patina valuable for collectors. There is another option, how to clean up the brilliance of copper coins, involves the use of acetic acid.
- Take a solution of vinegar 7-20% and lower the product into it for 15 minutes.
- After that, to clean the coin, you need to surface the toothbrush and rinse it with warm water.
How to clean copper coins with soda?
To remove dirt, you can use gruel from soda and water, but there is another option - cooking in a soda solution. There are a number of features, like cleaning royal copper coins and other products from this metal:
- In half a liter of water, put 3-5 st. spoon of soda and stir well until completely dissolved.
- Put coins in the liquid, but do not put a lot of them at once. It is important that they are covered by water at least 2 cm and do not lie on top of each other.
- Put on the stove and simmer for half an hour at minimum heat.
- After that, take the coins and clean them with a toothbrush. Do not apply force to not damage the surface.