Mastering Stained Glass

A movie about the beautiful art of making stained glass. In the term "stained glass," the word "stained" refers to the coloring process with either adding Metallic Oxides during Melting, which is the most common and ancient method, or adding various metallic oxides to the molten glass mixture during its production. For example, cobalt creates blue, copper can create red (ruby), manganese yields purple, and iron can produce greens. The color is inherent to the glass itself. Painting/Enameling and Firing: Sometimes, pigments (often made from metallic oxides ground with a glass frit) are painted onto the surface of clear or colored glass. This painted glass is then fired in a kiln, causing the pigment to fuse permanently with the glass. This technique allowed for finer details and shading, often seen in later medieval and Renaissance stained glass. The origins of colored glass can be traced back to ancient civilizations, with evidence of colored glass beads from Egypt around 2750 BCE. The Romans also used colored glass in their windows, though usually in smaller pieces and not yet in the complex, pictorial designs we associate with stained glass. The art of "stained glass" as we know it today, with intricate designs held together by lead, largely emerged with the rise of Christianity and monumental church architecture. The earliest documented use of multi-colored glass in windows in Europe dates back to the 7th century AD in British monasteries, such as St. Paul's Monastery in Jarrow, England. However, these were likely more decorative geometric patterns than narrative scenes. The oldest intact stained glass windows known are from the 11th century in the Augsburg Cathedral in Germany, depicting biblical figures. The Medieval Period (11th - 15th Century) was the foundational era for stained glass where in the 11th-12th Century early Romanesque churches began to incorporate stained glass. These windows were often smaller, with thick glass and bold lead lines, depicting simple biblical scenes. From the 12th to the 15th Century Gothic architecture, with its soaring vaults, pointed arches, and flying buttresses, allowed for much larger wall openings and thus immense stained glass windows. Stained glass reached its first major peak during the High Gothic period in the 12th and 13th centuries, particularly in France where the Cathedral of Chartres in France can be seen as the epitome of medieval stained glass art. Its almost completely preserved windows from the 12th and 13th centuries display an unparalleled depth of color, intricate storytelling, and masterful light manipulation. The intensity of the blues and reds from this era is particularly famous. While there were subsequent periods of revival and innovation (like the Renaissance, and later the Arts and Crafts and Art Nouveau movements in the 19th and early 20th centuries, which led to a quantitative peak in domestic use), the artistic and spiritual zenith of stained glass is widely considered to be the medieval Gothic era, where the windows were integral to the architectural and theological message of the cathedrals.