Swaging is a metalworking process that involves reducing or shaping the diameter of a metal tube or rod by using a rotary or reciprocating hammer-like action. This is achieved by placing the material into a die and applying compressive force, causing it to flow into the desired shape. Swaging is often used to create tapered or pointed ends on tubes or rods and is common in industries such as aerospace, automotive, and manufacturing for producing components with specific shapes and dimensions.