Brass is an alloy composed of copper and zinc, sometimes including lead for increased machinability. It is the alloy of choice for a wide range of applications, especially in architecture, manufacturing, and design. Brass comes in many forms, the most commonly used varieties of which include sheets and channels.
While brass is easy to cast, the forming of brass sheet metal requires a careful hand and specific machinery. The sheet is created through a cold process known as roll forming. In this process, brass sheet is fed through a series of roller dies and is then slowly bent into the desired shape. The result is an extremely uniform product of even thickness except for a slight thinning at the bend points.