Tip 1: How to clean copper

Copper Products extraordinarily beautiful.Their beauty is unique, distinctive.Utensils made of copper, decor items - tasteful, they decorate their house.However, this metal tend to acquire the green hue over time and covered with dark dull spots.There are several ways how to clean copper and return it to a dazzling shine.
you need
  • - a sponge or washcloth;
  • - soft cloth (flannel);
  • - lemon;
  • - detergent;
  • - flour;
  • - vinegar;
  • - coarse salt.
Guide
1
Grate copper products fresh lemon half, rub the edges with a brush or sponge and rinse with water.Wipe dry with a soft cloth.
2
soluble in hot water (45-50ÂșC) any small amount of detergent (preferably liquid) and wash it the subject of copper brush or sponge.If the product is large, such as a samovar or a large bowl, make a soapy solution and more as the cooling top up with hot water.A small product can be washed in a small bowl.After the procedure, rinse the item with clean cold water and wipe.
3
Prepare the following compositio
n: Take equal parts of flour, vinegar and a large rock salt, mix well.Apply copper products and leave for 20-30 minutes.Then wipe dry with a piece of flannel.
4
If the product of the copper old and dirt on it are strong, you can boil it in vinegar, which have coarse salt (0.5 liters of vinegar 1 tablespoon salt) for 15-30 minutes.Take precautions to make sure that vinegar pair did not get you on the mucous membranes of eyes, nose and throat.Put a gauze bandage on the procedure, or closing a container of boiling vinegar, cover, leave the premises.

After boiling, let the product cool down, rinse with clean water and rub to a shine.
5
If the product is not contaminated with copper, but simply has lost its former luster, you can crumple an old newspaper and polish the surface to its original shine.
6
In the old days, of copper (samovars, pots, bowls) cleaned river sand or grit red brick, but it is quite a hard abrasive, it can leave scratches on things.If you do not mind this fact, and can use this method.
7
Household chemicals selling cleaning products that clean and copper, among other surfaces.For example, good results are obtained the good old "Pemolyuks" and efficient "Metal Cleaner".

Tip 2: How to clean the bronze coin

Many coin collectors know that every coin so that it has acquired a good appearance must be cleaned.Under the cleaning process is meant not only cleaning the surface traces of dirt, but the removal of oxidation.Among novice numismatists, few know how to properly clean the bronze coin, while maintaining its value.Bronze is an alloy of copper with various dopants, so bronze coins to be cleared on the same principle as that of copper.However, here there are subtleties.
How to clean the bronze coin
Guide
1
Clean coin from dirt.To do this, pour water into a glass and put in a coin.It has to lie there for as long as the dirt is not razmoknet.Tap water is not suitable for this purpose, so it is best to use distilled water, which you can buy at any grocery store.When razmoknet dirt, take the soap, a toothbrush and warm water, clean the coin.Start cleaning brushes with a slight pressure on the coin, and then gradually increase the pressure, do not forget from time to time to rinse the brush in water.
2
Clean coin from the oxides.For this dip it in a 5% solution of sulfuric acid for several hours.When a weak presence of oxides can be applied citric acid or 10% acetic acid solution.If you have small patches on the coin, gently using a needle to remove them.In no case do not leave blotches, because in a short time, they stood out even more and can go to other coins lying nearby.
3
Rinse the coin in pure distilled water and wipe with a paper towel.Usually after such cleaning bronze coins lose their original patina, and the appearance of the coin is poor.Apply a new layer of patina.For this purpose any old cook pot, pour into it a part of the copper sulfate and the three parts of potassium permanganate.Pour the contents of the saucepan with 800 ml.water and put it on fire.Once the water comes to a boil, simmer the fire and leave the pan on the coals.Slowly stirring the contents, lower turn coins into the pot.You can see how the coin will begin to change color.Remove the coin, place them on a newspaper and let them dry.At the end rub the coin with vegetable oil.The oil in contact with the pores, allowing the coin to preserve and prevent it falling chlorine and moisture.This will keep the good appearance of the coin for a long time.
Note
If you are using copper cooking utensils (pots for cooking jams, bowls, samovar, etc.), then you definitely need to monitor her condition.In the case of her gray-green spots or plaque would be wiser not to use it, and clean out (for non-food purposes).The fact that the particles of toxic substances can get into the food, and together with it in your body.

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