“If jade is not carved, it will not become a useful object.” From jade raw materials to jade finished products, it needs to go through a series of processing steps. China's traditional jade carving technology has a long history and unique experience and craftsmanship. It can make full use of raw materials, bring out the characteristics of raw materials, and achieve the most perfect artistic effect while saving materials. Jadeite has the warmth and restraint of jade and the rich colors of gemstones. Jade carvers use beautiful modeling and exquisite carving techniques to turn them into unique pieces of art in the world. The processing technology of jadeite completely inherits the traditional jade processing technology, and the jade carving process and production tools are exactly the same. In summary, it can be roughly divided into the following steps: 1. Material selection Material selection is the first step in jade processing and is very important. The key to material selection depends on the purpose of the finished product. The requirements for material selection are different for processing and producing different types of finished products. Such as making bracelets, rings, ring faces, or ornaments, pendants, etc. The characteristics of the raw materials are closely related to the type of finished product. If the choice is not good, not only will the raw materials be wasted, but the processed jade products will also result in losses. Therefore, the material selection process is very important. Since most jade materials have a skin, the internal jade is wrapped in the skin, and it is difficult to distinguish the quality, so there is a saying of "gambling on stones". This feature is also not found in other jades. 2. Cutting The procedure for cutting the material is usually to "wipe the skin" first to observe the surface characteristics of the jade, such as the distribution and direction of the jade color, the distribution and development status of cracks, and changes in transparency (water head). Secondly, based on the overall characteristics of the jadeite raw stone, a preliminary judgment should be made on the purpose of the jadeite, that is, what type of jade article it can be processed into. The next step is to determine whether the jade raw material will be used as a whole to make ornaments, or whether the raw material will be cut into pieces to make small pieces of jewelry and small carvings. 3. Usage positioning and design The purpose positioning refers to the production of ornaments, small jewelry (such as bracelets, jade rings, ring faces, etc.) and small carvings. Any perfect jadeite is crafted through careful and creative design. Generally speaking, when making small pieces of jewelry, the yield rate needs to be considered. When making small carvings, one needs to consider the characteristics of the raw materials, highlight the advantages of the raw materials as much as possible, and meet the requirements of the carving pattern. When making ornaments, it is necessary to make creative designs based on the color, type, water, shape, cracks, black color, jade quality and other characteristics of the jadeite raw stone, with the principle of maximizing the value of the raw stone. 4. Processing process The specific processing process can be divided into the following steps: ① For small pieces of jewelry, cut them into pieces of different sizes according to their uses; for the raw materials for making ornaments, cut them into rough pieces according to the design requirements. ② Use a diamond grinding wheel (coarse yarn) to cut the yarn, and further remove the useless parts to make coarse wool according to the purpose and pattern. ③ Use a diamond grinding wheel (medium-sized yarn) to further remove the uneven parts and useless parts of the entire surface. ④ Use a diamond grinding wheel or round stone to further punch the rough hair from the previous process into a rough embryo. ⑤ Use grinding wheels of various specifications to grind out the pattern and the round sculpture sample. ⑥ Carving uses rolling, hooking, polishing and other process steps to process jade. 5. Carving techniques In the jade industry, there is a saying that "look at the shape from a distance, look at the jade up close and look at the knife work." The so-called "knife work" refers to the jade carving technique. From ancient times to the present, jade carving craftsmanship has basically followed the procedures of "material selection - design - production - polishing", and the carving techniques in the "production" process can be mainly divided into several categories such as relief, line carving, round carving, openwork carving, hollow carving, chain carving, and clever carving. 6. Grinding and polishing ① Polishing includes two categories: manual polishing and machine polishing. Manual grinding is done by grinding machines using various diamond grinding wheel tools to complete the process from coarse grinding to fine grinding. Machine grinding uses a vibrating machine to use corundum to complete the entire process from coarse grinding to fine grinding and final grinding. ②Polishing includes manual polishing and machine polishing. Manual polishing uses a polishing machine to produce a bright finish using various polishing tools and polishing materials. Machine polishing is done by vibrating the machine and adding polishing materials. 7. Decoration ①The decoration and base of the ornaments are the most important decorations of the ornaments. There are many materials and styles for the bases of the ornaments. If they are well matched, the artistic value and value can be enhanced. ② The packaged jadeite packaging, including packaging, outer packaging and supporting packaging, not only has a decorative and high-end effect, but also has the functions of protection and transportation.
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