The History of Hand-Blown Stained Glass
The history of stained glass is a long and mysterious one. Prior to the invention of technologies that allowed glass to be machine-made, all glass was either molded or hand-blown.
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Time Frame
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The earliest man-made glass originates more than 2,000 years before the Roman Empire. Craftsmen in Mesopotamia and Egypt were making little vessels from brightly colored glass as early as 1,500 B.C. Stained glass in England was mentioned in the 1600s. In the eighth century, an alchemist named Jabir ibn Hayyan wrote a treatise on colored glass. By the 12th century, hand-blown stained glass was a sophisticated form of art.
Theories/Speculation
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The origin of glass itself is mysterious. It is not clear exactly how hand-blown stained glass windows arose. It is surmised that they evolved from mosaics made from glass or colored stones, which may have been translucent.
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Considerations
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There were two main procedures for making flat glass panels before the advent of modern technology. One was to cast the glass in a mold. Opacity was a problem in such flat-cast glass. Another technique was to blow the glass, then spin the pipe rapidly so that centrifugal force pulled the glass into an expanding disk of flat glass.
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References
Resources
- Photo Credit stained glass circle 1 image by Aaron Kohr from Fotolia.com