The punch and die need precision machining to achieve the final dimensions and surface finish. This may involve processes such as grinding, EDM (Electrical Discharge Machining), or wire cutting to create intricate features and precise contours on the parts.Quality control measures are essential to ensure the dimensional accuracy and functionality of the components. This includes inspection and measurement techniques such as coordinate measuring machines (CMM) or optical measurement systems, as well as the use of precision gauges and inspection tools.