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Something about Glassblowing

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Glassblowing is a glass forming technique that involves inflating the molten glass into a bubble, or parison, with the aid of the blowpipe, or blow tube. A person who blows glass is called a glassblower, glass smith, or gaffer. History of glassblowing Whi
Glassblowing is a glass forming technique that involves inflating the molten glass into a bubble, or parison, with the aid of the blowpipe, or blow tube. A person who blows glass is called a glassblower, glass smith, or gaffer. History of glassblowing While the first evidence of man-made glass occurs in Mesopotamia in the Late-Third/Early-Second Millennium BCE, the Phoenicians are generally credited with developing the art of glassblowing. The earliest known blown glass was found near Jerusalem, and dated circa 50-40 BCE. The blowing technique transformed the material's usefulness from a time consuming process, in which the medium was hot-formed around rough cores of mud and dung, into a mass-producible material which could be quickly inflated into large, transparent, and leak-proof vessels. Glassblowing techniques spread throughout the Roman world. Venice, particularly the island of Murano, became a centre for high quality glass manufacture in the late medieval period.

The relatively recent "studio glass movement" began in 1962 when Harvey Littleton, a ceramics professor, and Dominick Labino, a chemist and engineer, held two workshops at the Toledo Museum of Art, during which they started experimenting with melting glass in a small furnace and creating blown glass art. Thus Littleton and Labino are credited with being the first to make molten glass available to artists working in private studios. This approach to glassblowing blossomed into a worldwide movement, producing such flamboyant and prolific artists as Dale Chihuly, Dante Marioni, Fritz Driesbach and Marvin Lipofsky. Lino Tagliapietra was among the first Murano-trained artists to leave and spread their knowledge in the United States. In 1971, Dale Chihuly began the Pilchuck Glass School near Stanwood, Washington. The Pilchuck School of Glass became the source of a great deal of the current American Studio Glass movement, and continues as such today. 

Glassblowing is a form of art that requires lengthy training and intense concentration. In addition to glassblowing as an art, many individuals pursue glassblowing as a hobby. In fact, it is one of the fastest growing hobbies in North America

There’re many different types of glass blowing, so what are different types of glass blowing? Glass blowing is a centuries-old technique of forming a glass item by inflating a small amount of molten glass on the end of a hollow iron tube, which is also known as a blowpipe. The technique can be traced back to approximately 50 BCE in Roman Syria. Although the methods of glass blowing haven’t changed much over time, the technology used has come a long way. There are two basic types of glass blowing: off hand glass blowing and lampworking. Both offhand glass blowing and lampworking involve hot, molten glass and a stainless steel or iron rod called a panty. They differ in the process by which the glass is heated and manipulated. The basic recipe for glass has remained very much the same since it was first developed: glass is made with sand, ashes, lime and potash, among other possible ingredients. Before glass blowing was developed, people used to wrap hot glass around molds and cores to make vessels. These were not seamless and were susceptible to leaks. Once glass blowing became the favored method, it spread throughout Europe, Asia and Africa. Glass became more efficient to make, and hence more available to the common household. The early 13th century marked the rise of the Venetian glass makers, who perfected the technique of glass blowing. In 1962, the “studio glass movement” ushered in a new era of publicly-accessible glass blowing workshops and studios. Today, glass blowing is noted as one of the fastest growing hobbies. With offhand glass blowing, there are three furnaces required. The first, called the furnace, is used to hold the hot, molten glass that is the raw material of a glassblower. The next furnace is known as the glory hole, where the piece is heated and reheated during the process of shaping and manipulating the glass. The annealed or leer is the third and final furnace, where the glass slowly cools over several days in order to reduce thermal stress. There are many tools that glassblowers use in their craft. The blowpipe is dipped into the molten glass to collect a glob of glass, which is then rolled on the marker, a hard, flat surface. After this step, an air bubble is blown into the glass through the blowpipe. Blocks are also used to shape and mold the glass. At the bench, which is the glassblower’s workstation, there is several hand tools used to further shape the glass. Large bladed tweezers called jacks can be used to pull on the glass or to make more detailed adjustments, and shears are used to cut the glass. Old fashioned lampworking used a flame created by an alcohol lamp and breath or bellows. The use of a lamp gave the technique its name. This method was and still is used to create beads, miniature glass items, figurines and sculptures, as well as laboratory glass such as test tubes. Now, lamp workers use an oxygen flame created by natural gas or propane torches. Molten glass is collected on the panty, then manipulated while turning on the rod and constantly shaped by various hand tools. At one time, this technique was used primarily for scientific applications, but it has developed into an art form in its own right. When varieties of glassware used in people’s life, at the time convenience they brought to us, we should also know the technique of glassblowing, improve and advance it better, server people better.

 
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