Theoretically exact planes, lines or points from which other features are located on design drawings.
Defective surface condition where scale, slag or other impurities not removed during mill processing affect the surface of the sheet.
Tool with a void or cavity which is precisely fitted to a Punch used to shear or form sheet metal parts.
Scratches, scrub marks, indentations, galling or burnishing of sheet metal workpieces by tooling.
A condition that may occur on a laser wherein the laser essentially produces a feature twice destroying the part's edge and causing out of dimension condition.
1 Engineering document depicting a part or assembly. 2 In metal forming, the stretching or compressing of a sheet metal part into a die by a punch to create a 3-dimensional part.
