Does your binding machine not punch as smoothly as it used to? Then try this quick tip for maintaining the metal punching die on your binding machine:

1. Lightly spray a sheet of paper with WD-40, concentrating on the long edge of the paper.
2. Carefully insert the sheet into the punch.
3. Punch the sheet a few times, moving it slightly between each punch.

This technique applies a light coat of lubricant onto each die, without leaving excess residue behind.