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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]
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 ...
Flat glass making at Blenko utilized the hand–blown cylinder glass method that was common in the 1880s. [23] During the first quarter of the 20th century, many other flat glass makers replaced well-paid human glassblowers with the Lubbers glassblowing machine. A few years later, the entire process was changed and became more automated. [24]
Blown glass is made utilizing a long metal blowpipe by the glass blower who shapes and heats the object. The piece is attached to a long, flat-topped iron called a pontil to the end of the piece, with a small piece of molten glass, and the blowpipe is now cracked off.
Feathering – creating feather-like patterns on a glass by dragging a metal tool across the surface of a newly applied wrap. Frit – crushed glass often melted onto other glass to produce patterns and color; Incalmo – the grafting or joining together, while still hot, of two separately blown glass [bubbles] to produce a single [bubble]. [4]
The early 20th century marks the move away from hand-blown to machine manufactured glass such as rolled plate glass, machine drawn cylinder sheet glass, flat drawn sheet glass, single and twin ground polished plate glass and float glass. Broad sheet glass was first made in the UK in [3] Chiddingfold, Surrey on the border with Sussex in 1226.
The end of the cylinder opposite the blowpipe can be squeezed together and sealed. With further heating, the sealed cylinder can be blown and formed into any shape a glassblower can make. Many notable glass artists regularly use murrine in their work. These include: Dante Marioni – American; Richard Marquis – American; David Patchen ...
The tip of a glassblowing pipe is covered with a 'collar' of clear molten glass, and touched to one corner of the aligned canes. The tip of the blowpipe is then rolled along the bottom of the canes, which stick to the collar, aligned cylindrically around the edge of the blowpipe. They are heated further until soft enough to shape.
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