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In glassblowing, the term blowpipe refers to a pipe used to blow a bubble of air into a gather of molten glass, as the first step in the creation of hand-blown glass bottles and bowls. By the end of the first century, the two primary glassblowing tools were the iron blowpipe and pontil . [ 2 ]
Scientific glassblowing is a specialty field of lampworking used in industry, science, art and design used in research and production. Scientific glassblowing has been used in chemical, pharmaceutical, electronic and physics research including Galileo's thermometer, Thomas Edison's light bulb, and vacuum tubes used in early radio, TV and computers.
Laboratory glassware is a variety of equipment used in scientific work, traditionally made of glass. Glass may be blown, bent, cut, molded, or formed into many sizes and shapes. It is commonly used in chemistry, biology, and analytical laboratories.
A stage in the manufacture of a Bristol blue glass ship's decanter.The blowpipe is being held in the glassblower's left hand. The glass is glowing yellow. As a novel glass forming technique created in the middle of the 1st century BC, glassblowing exploited a working property of glass that was previously unknown to glassworkers; inflation, which is the expansion of a molten blob of glass by ...
Lampworking can be done with many types of glass, but the most common are soda-lime glass and lead glass, both called "soft glass", and borosilicate glass, often called "hard glass". Leaded glass tubing was commonly used in the manufacture of neon signs , and many US lampworkers used it in making blown work.
Lehr – a specialized, temperature-controlled kiln for annealing glass. [5] Mandrel – metal rod used to construct a glass bead around. When cooled and removed, the space occupied by the mandrel creates the hole through the bead. Marver – a tool used in glassblowing A marver is a large flat table. The glass piece is rolled across is surface.
Cutter removing ends of cylinder and slicing the tube lengthwise Sliced tube of glass is flattened in an oven. Cylinder blown sheet is a type of hand-blown window glass. It is created with a similar process to broad sheet, but with the use of larger cylinders. In this manufacturing process glass is blown into a cylindrical shape by a glass blower.
Glass beads are usually categorized by the method used to manipulate the glass – wound beads, drawn beads, and molded beads. There are composites, such as millefiori beads, where cross-sections of a drawn glass cane are applied to a wound glass core. A very minor industry in blown glass beads also existed in 19th-century Venice and France.