Spinning, also known as spin forming or metal spinning, is a specialized sheet metal forming process used to create cylindrical or conical shapes from flat sheets or pre-formed blanks. This technique is particularly valuable for producing symmetrical components such as domes, cones, and cylindrical shells. Metal spinning is commonly employed in industries such as aerospace, automotive, and lighting for fabricating parts with precise contours and smooth surfaces.

The spinning process involves mounting a flat sheet or blank onto a rotating mandrel. A spinning tool, often a roller or a specialized shaping tool, is then pressed against the rotating sheet. The combination of the mandrel rotation and the pressure from the tool causes the metal to flow and take the shape of the tool, gradually forming the desired geometry. The process is highly dynamic, allowing for continuous adjustment to achieve specific dimensions and tolerances.

One of the primary advantages of metal spinning is its ability to produce seamless, hollow shapes with consistent wall thickness. This is particularly advantageous for applications where lightweight, structurally sound components are required. The process can be used with various materials, including aluminum, stainless steel, and copper, making it versatile for different industry needs.

Metal spinning is well-suited for both prototyping and high-volume production. It offers a cost-effective solution for creating parts with complex geometries without the need for extensive tooling or secondary operations. The simplicity of the spinning process allows for rapid production cycles, contributing to overall efficiency in manufacturing.