What is a mandrel used for in metalworking?

• A. Used to size and shape a ring
• B. Used to measure fabric
• C. Used to cut metal
• D. Used to polish stones

Answer: (A)

A mandrel is a shaping form used to size and shape rings. Ring mandrels are graduated and tapered so you can slide metal over it and hammer or bend until the inner diameter matches the desired size and the ring sits round and true. This helps ensure consistency in fit and form as you work the metal. While other tools handle fabric measurement, metal cutting, or stone polishing, the mandrel’s purpose in this context is specifically to shape and size rings.