Spot Gilding.
Gilding Steel.
Wood Gilding.
II.—Proceed as above, but take silver leaf instead of gold leaf, and after all is thoroughly dry and the superfluous silver has been removed, apply a coating of good gold lacquer. The effect will be equally satisfactory.
Zinc Gilding.
II.—To gild zinc articles, dissolve 20 parts of gold chloride in 20 parts of distilled water, and 80 parts of potassium cyanide in 80 parts of water, mix the solutions, stir a few times, filter, and add tartar, 5 parts, and fine chalk, 100 parts. The resulting paste is applied with a brush. Objects of copper and brass are previously coated with zinc. This is done in the following manner: Heat a concentrated sal ammoniac solution to the boiling point with addition of zinc dust and immerse the thoroughly cleaned objects until a uniform zinc coating has formed. Or boil the articles in a concentrated caustic soda solution with zinc dust.
Oxidizing Processes:
Aluminum Plating.
To Copper Aluminum
| II.— | Sulphate of copper | 30 parts |
|---|---|---|
| Cream of tartar | 30 parts | |
| Soda | 25 parts | |
| Water | 1,000 parts |