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Glassmaking technique: free-blown glass

11문장 100% 한국어 번역 4명 참여 출처 : 칸아카데미

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Glassmaking technique: free-blown glass

[soothing flute music] Free-blown glass vessels are shaped solely by inflation with a blow-pipe and manipulation with tools.

To make a simple bottle, molten glass is gathered onto the blow-pipe, then rolled back-and-forth on a smooth surface, the marver, to give it a cylindrical shape.

A small bubble is blown in the glass.

The blow-pipe is spun end-to-end in order to stretch the bubble out to form a long, narrow tube.

The thick mass of glass at the end of the tube remains soft and is immediately inflated to form the vessel body. The bottom is flattened.

To shape the bottle's mouth a glass-tipped metal rod, the pontil is attached to the bottom of the vessel.

Drops of cold water are applied and a sharp bang on the blow-pipe causes the neck to break.

After reheating, the opening can be reshaped.

A gentle tap on the pontil easily breaks the finished vessel free.

It can then be gradually cooled in an annealing oven.

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[soothing flute music] Free-blown glass vessels are shaped solely by inflation with a blow-pipe and manipulation with tools.발음듣기

다른 번역문 등록

To make a simple bottle, molten glass is gathered onto the blow-pipe, then rolled back-and-forth on a smooth surface, the marver, to give it a cylindrical shape.발음듣기