In order to grasp and use good plaster, you must first understand its nature, gypsum powder is made from mineral quartz - gypsum ground after roasting, the gypsum powder in some major cities can buy building materials stores, but in Rural small town not necessarily be able to buy plaster mold, had their own processing. Processing methods are: the gypsum is crushed with a mill, the more detailed the better, and then placed in a pot roasting, while fried side burn, burn about 800 degrees to plaster mold production, its quality is not good to buy ready-made . Gypsum plaster molds custom, said hemihydrate or calcined gypsum (2CaSO4 · H2O) in the chemical, is a natural abundance of gypsum mine CaSO4 · 2H2O when heated to 150 degrees to 170 degrees lose crystal water contained 3 / 4 and had changed. A quantity of calcined gypsum mixed with water into a paste after a quickly solidifying plaster mold production, back into Ca-SO4 · 2H2O. We use gypsum oil flowing liquid into a solid plasticity, making molds and firing works, the whole course of the reaction about 15 minutes, will produce some heat, gypsum powder and water, the ratio is about 2: 3, too much water the fastness solidified poor; if you need strength, they put plaster of Paris. Custom plaster mold plaster mold Tonghua _ _ ARTEL plaster molds provided by Gaomi Artel plaster mold factory. Gaomi ARTEL plaster mold factory (www.htsgmj.com) (www.htsgmj.com) strong, credible, Shandong Weifang lime, gypsum and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead ARTEL plaster mold into the brilliant and you work for a better future!