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Blown Glass

Glass blowing is by definition a hot process! The transformation of raw materials into glass takes place at around 1,320 °C / 2,400 °F, and the glass emits enough heat to appear almost white hot. The glass is then left to "fine out" (allowing the bubbles to rise out of the mass), and then the working temperature is reduced in the furnace to around 1,090 °C (2,000 °F). At this stage, the glass appears to be a bright orange colour as seen here.Glassblowing involves three furnaces. The first, contains a crucible of molten glass, and is simply referred to as "the furnace". The second is called the "glory hole", and is used to reheat a piece in between steps of working with it. The final furnace is called the...

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