Cutting one and mending three are the technological methods used in repairing the workpiece by stamping die: rough cutting with one knife and fine trimming with three knives. Similarly, there is a cut and a trim, that is, a rough cut and two fine cuts. According to the required mold precision, determine the process method. A lot of tool compensation means good surface roughness and high precision.

Stamping die is a special equipment for processing materials (metal or nonmetal) into parts (or semi-finished products) in the process of cold stamping, which is called cold stamping die (commonly known as cold stamping die). Stamping is a kind of pressure processing method at room temperature, which uses the die installed on the press to exert pressure on the material to make it separate or deform plastically, so as to obtain the required parts.