1 Grouping of identical or different parts in multiples within a workpiece to conserve material. 2 In packaging, stacking of parts whose shape permits one to fit inside another.
Slight irregularities at the edge of the stock surface after progressive punching nibbling operations in a turret press.
The process of adding nitrogen to the surface of a steel, usually from dissociated ammonia as the source. Nitriding develops a very hard case after a long time at comparatively low temperature, without quenching.
Information not related to the shape of the product. i.e. part number, notes, material lists, tolerances, etc.