A mandrel is a tool used in manufacturing and machining to shape or support materials during processes like bending, forming, or machining. It is typically a cylindrical rod or bar that provides a stable core around which materials can be shaped. Mandrels are essential in creating precise shapes and maintaining the integrity of the workpiece. In various industries, such as metalworking and woodworking, mandrels can be made from different materials, including steel, aluminum, or plastic. They are often used in conjunction with other tools, like lathes or presses, to ensure accurate and efficient production of components, such as pipes or tubes.