Agate knives are flat in front and sharp in back, with different lengths, flexibility and sharpness. Agate knife was used to polish gold and silver utensils in ancient manufacturing process because of its hard and flexible material, and it has been used ever since.
Dry grinding and hard polishing technology is a traditional technology, and its recent use time should not be less than that of Ming Dynasty. This process began with the production of jade carvings and bronzes, and the use of wood products began with small wooden decorations such as Huang Huali, such as scabbard and small mirror box.
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Matters needing attention
1. Drop the finest polishing agent (such as ordinary green oil) on the wool felt? Drop a few drops of sewing machine oil on the table and wipe the jewelry back and forth, and it will be shiny.
2. Apply a layer of colorless nail polish before gold and silver jewelry. Can make the surface luster of gold and silver jewelry lasting.
3. The best way to maintain silver jewelry is to wear it every day, because human oil can produce natural and moist luster.
4. The real way to prevent the surface oxidation of silver jewelry is electroplating. At present, the commonly used methods are silver plating, rhodium plating, palladium plating and so on.
5. If you don't handle and collect the silver jewelry after wearing it, it is likely to make the silver jewelry black. At this time, you should use a small jewelry brush to clean the fine seams of jewelry, then drop a drop of silver emulsion on the paper towel to wipe off the black oxide on the surface of jewelry, and then use a silver cloth to restore the original brightness of jewelry.