How to dye the gourd?

1. Irradiation method \x0d\ Soak the gourd in alkali, expose it in the sun evenly, and dip the fine cloth in walnut oil. Some people simply grind with vegetable oil to save money. Alternating the two processes can speed up the color change. But it still takes 1 ~ 2 years to get deep red, so this method is not easy to identify. \x0d\2。 Cooking method \x0d\ Boil with strong tea water, children's tea (a traditional Chinese medicine) water, mahogany powder water, etc. , or soak for a period of time, the color can be immersed in the gourd skin, and its shade varies with the amount of tea. \x0d\3。 Frying method \x0d\ When the gourd is completely put into high-temperature edible oil, it can change color in a short time. \x0d\4。 Glue method \x0d\ Boil a pot of boiling water, add a little bone glue (glue for carpentry), and then add pigments (rose red and orange red) after melting. The color depth is determined by experiments. Then put the gourd into the pot, turn it up and down with a wooden stick to make it uniform in color, then take it out and drain it, put it on the table to dry, and then wipe it with a white cloth to make it smooth, bright and colorful. \x0d\5。 Dry cleaning method \x0d\ Chemical dyes, mainly dyes for dyeing cloth and thread, are directly coated on the gourd, and then rubbed with cloth for many times until the ideal color is achieved. Dip the cloth in vegetable oil and spread it out, so that the oil can slowly penetrate into the gourd. \x0d\6。 Drug method \x0d\ Dissolve 10g potassium permanganate in hot water, put on rubber gloves and evenly coat it on the surface of gourd, and finally polish it with bright oil. \x0d\ There are many aging technologies, so I won't list them one by one, but no matter what aging method is used, no matter how realistic it is, there is still a difference between fake and real. Artificial pseudocolors may have similar chromaticity, but there is no restrained luster halo, and the surface is usually covered with a stiff floating light. In addition, from the inner wall of gourd, natural discoloration is relatively old, especially insect tools, which are grayish black and sometimes eroded, while artificial coloring is the same as the outer wall, and the impregnation effect is obvious. In addition, the colors of different parts of people who naturally change color will not be exactly the same. The more people touch, the darker the color will be, such as the embossed part of the model. On the other hand, artificial coloring is the opposite. The place that is often rubbed becomes shallow because of fading, so the depression is deeper.