Metal spinning, also known as spin forming or spinning, is a metalworking process that involves rotating a metal disc or tube on a lathe while applying pressure with a tool to shape it into a desired form. The process is commonly used to create cylindrical or conical shapes such as bowls, vases, and lampshades, as well as complex geometries like hemispheres and paraboloids.
During metal spinning, the metal disc or tube is clamped onto a lathe and rotated at high speed. A tool, called a spinner, is then pressed against the metal, causing it to flow and take on the shape of the tool. The spinner can be either hand-held or mounted on the lathe. The process is repeated multiple times, with the shape gradually refined with each pass until the final form is achieved.
Metal spinning can be performed using a wide range of metals, including aluminum, copper, brass, stainless steel, and titanium. It is commonly used in the manufacturing of components for the aerospace, automotive, and lighting industries, as well as for decorative and artistic purposes.