swage

noun

• 1a shaped tool or die for giving a desired form to metal by hammering or pressure.

• 2a groove, ridge, or other moulding on an object.

verb

• shape (metal) using a swage, especially in order to reduce its cross section: (as noun swaging)the instrument has a swaging head and a pulsed action which flattens the rivet in a series of rolling motions
• join (metal pieces) together by using a swage: eye-ends in corrosion-resisting steel swaged on aircraft control cables