What is the role of polishing in the process of processing jade into finished products?

During the process of jadeite becoming a finished product, experts in this field all know that "carving accounts for three points, while polishing accounts for seven points." This sentence actually means that for jadeite finished products, the polishing process is very important. People in the industry know that jadeite that has not undergone this process will only appear dull, so it can only be called "rough goods." This also means that this product is a semi-finished product, even if its carving is very fine, it will not be outstanding. Just like a person who did not sleep well the night before, when he wakes up on the day, he will not be able to see everything around him clearly. No matter how beautiful the objects around him are, they will lose their luster in his eyes. For jadeite, if it is not polished, it will always have a fuzzy outer film.

A term should be mentioned here, that is "polishing". The meaning of this term in this field is that the jade looks transparent, bright and shiny as a whole after polishing. The unit of jade is crystal. When the crystal becomes finer and the gap between the crystal becomes smaller, the crystal becomes closer and closer together. At this time, the jade will become more transparent, and the series of steps to process the crystal is "water quality". The better this step is done, the more transparent the jade will be after polishing. It can also be said that if you want to know whether the "water quality" step of this jade is well done, you can see it as long as it is polished. The image characteristics show.

The above is enough to illustrate the importance of "polishing", however, "polishing" also requires a series of steps, not just wiping the surface clean like polishing your eyes. Next, let's understand what points need to be paid attention to in "polishing"?

Generally speaking, there are 8 points that need attention. The first step is to use oil stone, that is, to use oil-rich rock to polish the jade. Generally, not too large an oil stone is used, otherwise it will be difficult to control the strength and it is easy to damage the surface of the jade. What needs to be polished are the rough places where the traces of carving are obvious, and then use oil stones of different coarseness and fineness to polish over and over again. After that, the grinding wheel will be used. This step is very similar to the previous one. Both are designed for grinding. The only difference is that the grinding wheel has a sliding wheel, which is also for more delicate grinding of the jade. The grinding wheel can be rolled back and forth continuously. Some experts sprinkle the powder needed for polishing before these two steps. After sprinkling it, you can clearly see which areas need to be polished, so polishing powder is necessary.

Next, a drill with an iron nail is used. This is a specially designed small device. First, diamond powder is sprinkled on the iron nail, and then the carved area is processed. The drill used here is to further polish the details after carving. There are many sizes of iron nails, which need to be considered according to the engraving area, and then replaced and polished. After drilling and grinding, sandpaper is used for polishing. There are many types of sandpaper with different coarseness and fineness. This time it is aimed at those slightly larger carved areas. Generally, two types of sandpaper will be used for polishing twice.

The above points are all for the purpose of making the surface and details of the jade smooth after polishing. After polishing, there will be jade chips in many gaps. At this time, you need to use a brush, dip the brush in diamond powder, and brush the surface of the jade. At this step, the "polishing" process is almost completed, and you still need to be patient during this step. The next step is cleaning. The powder left on the jade needs to be removed through other media and then used in an ultrasonic machine. Sometimes it is also necessary to wipe the fine areas with alcohol.

After cleaning, the next step is waxing, which is to add a layer of protective film to the jade. Some people confuse this step with the concepts of glue injection and acid pickling. Glue injection and acid pickling will affect the internal substances of jade, while waxing is only a surface treatment method. After waxing, the wax must be blown dry and solidified into shape to fully protect the jade. The above are the key steps of "polishing".

fruit

fcgc33