Punch and Die Shims

After repeated sharpening it is necessary to shim tools to restore the original height. Shortened tools result in insufficient punch penetration and may cause slug pulling. When shimming tools, care must be taken not to exceed the original tool height. Excessive tool penetration causes rapid tool wear.

Perforating applications may cause severe bowing of the material. Shimming the die above the die adapter will create a back bend effect and reduce part distortion.

Whitney offers packages of shims made especially for restoring punches and dies to their original specifications.