You will need
  • brass product;
  • - gasoline;
  • - turpentine;
  • - sawdust;
  • - soft cotton cloth;
  • woolen cloth or felt;
  • - carbon-copper;
  • - ammonium carbonate;
  • - nitrate of iron;
  • - ammonia;
  • - sodium thiosulfate;
  • water;
  • - glassware;
  • - volumetric beaker;
  • laboratory or pharmacy scales with weights.
Instruction
1
Brass product can be tinted to the desired degree of blackening of the surface in the following way. Mix 60 g of copper carbonate with 500 ml of liquid ammonia. Pour the solution into a jar containing 1 l of distilled water. Once again, stir and immerse the pre-skim of gasoline product in the resulting composition. Lower it face up. The process of blackening (oxidation) is necessary to control visually.
2
Upon reaching the desired color, remove the item and rinse it in cold tap water. Dry it in a wood sawdust. If necessary, slightly zapolarie protruding parts of the relief with a piece of stiff fabric. Wipe the finished product with turpentine and dry it again. For durability color can be cover the item with clear varnish.
3
Brass product can be painted in dark brown color. Dissolve 10 g of ferric nitrate in 1 liter of water. As in the previous case, wipe the item with gasoline, dry and dip in a container of solution. Keep it there until it turns the desired color. Then proceed exactly the same as in the first case.
4
If you want to give brass a reddish-brown color, apply this composition. 6 g of iron nitrate and 6 g of sodium thiosulfate dissolved in 100 ml of water. Product degrease, dry in sawdust, soak in a vessel with the solution and wait until it has reached the desired shade. Dry and Zapolarye
5
You can give the product brass and a slightly greenish color, making it look like antique bronze. This is best done with a darker brass alloy with higher copper content. Take, for solution 10 ml of liquid ammonia, 30 grams of ammonium carbonate, 240 g of water. In this solution a subject, you can keep up to 8-10 hours, constantly controlling the degree of staining. After drying the product in air you can repeat the process, this will enhance colour.