blownglass

Blown glass is a glassworking technique that involves inflating molten glass into a bubble, or parison, with the aid of a blowpipe. This technique is used to create hollow glass objects, such as vessels, and is one of the most common methods of shaping glass. The origins of glassblowing can be traced back to Syria around 1st century BCE, and it has since evolved into a widely practiced craft.

The process of blown glass begins with gathering molten glass from a furnace onto the end of a blowpipe. The glassblower then blows air into the pipe, inflating the glass into a bubble. The bubble is then shaped and manipulated using various tools, such as jacks, paddles, and tweezers. The glassblower can also add color and texture to the glass by incorporating different materials, such as metals or other types of glass.

Once the desired shape is achieved, the glass is carefully transferred to a punty, or pontil, which is a solid rod used to support the piece while it is being refined and cooled. The blowpipe is then removed, and the opening is sealed. The glass is then annealed, or slowly cooled, to relieve internal stresses and prevent cracking.

Blown glass is used in a variety of applications, including art, jewelry, scientific instruments, and everyday objects such as bottles and vases. The technique allows for a high degree of creativity and customization, making it a popular choice for artists and craftsmen. Today, blown glass is produced both industrially and by skilled artisans, with techniques ranging from traditional to innovative.