Bohemian glass. Production secrets
Genuine Czech glass is very popular all over the world. What is the secret of such fame and popularity? As you know, the basis for high quality products is their production. And production is based on manufacturing technologies. So, we tried to find out how Bohemian glass is created, found out all the secrets of production, and we will be happy to tell our customers about them.
The Czech Republic has always been famous for its rich traditions in glass production. Bohemian glass technology is considered a Czech national treasure. To this day, glassblowers and other specialists of Bohemia Crystalex Trading observe technologies and ancient traditions, achieving the exceptional quality of their products.
To better understand the basics of the Bohemian glass manufacturing process, you need to know what its composition is. Czech glass traditionally consisted of four main chemical ingredients: silicon dioxide (SiO2), calcium oxide (CaO), potassium oxide (K2O) or sodium oxide (Na2O), lead oxide (PbO). Silicon dioxide makes up 70-75% of glass, it is formed from quartz sand without any contamination. Calcium oxide is used to enhance the brilliance of glass. In the form of lime, it is added to glass. In ancient times, it was obtained from the rubble of sea shells; in the Middle Ages, seaweed and wood ash were used. In the 17th century, it was Bohemian glassmakers who began to add limestone to the glass mass. Alkalis are necessary for melting and making glass; they usually make up 12-16% of the molten glass. Potassium oxide or sodium oxide is added to it in the form of potash (K2CO3) or soda. Depending on this, soda or potash glass is obtained. Soda glass is light and clean, it is soft, melts easily and can be processed. But potash glass is hard, refractory and not so plastic. But it is very shiny.
Previously, raw materials for the manufacture of potash glass were obtained from the forest. Therefore, it was also called «forest» glass. Due to the predominance of coniferous trees, the hue of Czech glass turned out to be greenish. It was Bohemian glassmakers in the Middle Ages who figured out how to make glass transparent and radiant. They added lead oxide to the glass mass, which increased the refractive index and color dispersion in the glass. A type of glass with the addition of this component is called «Bohemian crystal». Thanks to the cut, the Bohemia tableware shines enchantingly and shimmers with all the colors of the rainbow.
The manufacture of Czech glass products is a complex, time-consuming process that necessarily includes manual labor. The production of bohemia stacks, which can be purchased at https://aleks-crystal.com/stopki-dlja-vodki/, begins with melting the glass for the molten glass on fire. In this incandescent mass, the master glassblower will breathe the form. First, he gains mass with a special tube, deftly turning it between his fingers. So it evens out the proportions of the molten glass mass. After that, the glass blower gives it the desired shape by blowing. The master transfers the resulting balloon into a wet wooden form. It represents a «pattern» of the future product.
Then the glassblower, with the help of repeated blowing into the mold, obtains the main shape of the product. Then comes the turn of the most complex decorative design. The grinder is engaged in glass processing at different depths, creates the necessary design and shape, makes a faceting. Professional, talented glass carvers reproduce the most complex drawings and compositions: from simple flower drawings to works of great artists. Then skilful artists use the finest brushes to cover the items with gilding. A thin layer of gold makes wine glasses, Bohemia glasses exquisite and solemn. Further, the gilded parts of the product are polished by hand using agate and hematite bars. This gives the products even more shine and shine. After each stage of the technological process, the product is checked for quality. And if even the slightest imperfection is noticed, the glassware is broken and sent to the melt.
Thus, the technology for the production of Czech glass is very complex. It is thanks to the use of high-tech modern equipment and ancient traditions of manual labor that Czech glass of the Bohemia trademark is distinguished by its high quality and is popular all over the world.