No one can tell what is inside an unopened jadeite, except for its shape, weight and appearance. Stone cutting is called "stone cutting" or "stone cutting" in the industry. Only after stone cutting can jade get rid of its roughness and bloom with beauty. However, if you are not careful during the cutting process, a piece of beautiful jade may turn into waste stone. So, what are the techniques for cutting jadeite raw stone? Jade cutting There may be different practices in different regions, but they are generally similar. In general, there are the following steps: 1. Raw material analysis - Before processing, you must have a comprehensive understanding of the actual situation of the raw materials, that is, understand the specific conditions of the processing object. This is just like a doctor treating a patient. Only through analysis can we prescribe the right medicine and treat the patient accordingly. 2. Stone slicing refers to the first step of splitting the stone. How you cut is the key. If you don’t cut it well, it is entirely possible that one million will turn into one hundred thousand! After careful observation and judgment, you need to choose the direction for cutting. If there is a crack, the first cut is mainly along the grain. The largest stone: 1. Original method: burning - to explode into small pieces. Disadvantages: it is difficult to control the explosion point and the damage is serious. Later it was improved to partial burning. 2. Wire drawing (wire saw): use iron wire and corundum as abrasives, add water to cool, and pull back and forth to loosen the jade. Advantages: No damage to quality and no waste of raw materials. Disadvantages: Slow. 3. Pedal-operated material disassembler: It has been used since the Qing Dynasty and has now been replaced by electric ones. But it is still used for high-quality jade or in mountainous areas without electricity. A round iron-thallium-copper disk, a rotating shaft, a belt or tape, and a foot pedal to drive the rotating shaft, continuously adding corundum to slowly cut the jade. 4. After the first cut, the color, crack distribution, water head, etc. of the jade material will be clearer, and slicing preparation can begin. Profits are sought in the midst of risks and rely on experience and luck, which is the real charm of gambling on stones. But in addition to luck, when you gamble on jadeite, you should react quickly, improve your psychological quality, keep a clear head, and master professional knowledge. fcgc66 fcpf18 |
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