Turning Flat Metal Into Curvy Art
You can shape flat metal into intricate bowls or sculptures just by hammering it repeatedly. By using a specialized block as an anvil, craftsmen force the stiff material to expand and curve into complex three-dimensional forms.
This ancient technique requires a rhythmic process of hammering followed by heating the metal, a step called annealing, which softens it to prevent cracking. Each round of hammering slowly stretches the sheet, allowing the artist to guide the metal into rounded shapes that would be impossible to create otherwise. It is a slow, meditative craft where the worker must constantly monitor the grain of the material. Skilled artisans have used this method for centuries to create everything from delicate armor to exquisite decorative vessels.
Source: Raising (metalworking)