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The process of blowing glass includes several elements: through a small window in the furnace, the glassblower exposes his tube
into the molten glass and at the tip of it takes out a fiery mass. After that, he quickly rotates the tube and at the same time blows into it, fast and precise movements giving to the formless fiery mass the form of the future vessel. Then after that, using tweezers, scissors, tweezers glassblower cuts gracefully curved edge, bends the nose, sculpts shaped handles, pulling the legs of glasses and vases, decorate the product with glass of a different color ribbons, threads, spots, etc.In the glass manufactory, the master is located on a high wooden platform around glass furnace. The proximity to the fire and hot glass is forced to be especially collected, carefully to observe safety precautions. For example, when blowing a Christmas ball, a hot glass bubble can burst, and then the glass splashes and falls on your hands, leaving small burns. The work of a glass blower belongs to the category of harmful: the whole day in standing position, in the workshop is usually hot, and often-a strong noise of the hood. Glass becomes malleable when heated to 1300 C. Quartz glass requires even more heating-2000 C.
The manufactory can use glass melting furnace and annealing furnace, which emit heat. In a large manufactory furnaces can be several. But the gas burner seriously heats the air. In addition, the master has to look at its flame all day. And the process of blowing is associated with the tension of the lungs. For example, the glass-blower at a Christmas tree toy factory can produce up to 250 balls per shift. In the production of glass, the main components are: quartz sand, soda, limestone and dolomite, as well as various additives, including arsenic. When cooking glass arsenic evaporates, and this is an additional risk factor, despite the mandatory extraction. Therefore, the glass blower is entitled to early retirement, although many masters are not in hurry to leave.
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