Jointing (sharpening)

For the process of creating a true edge on a piece of wood, see Edge jointing.

Jointing refers to the process of filing or grinding the teeth or knives of cutting tools prior to sharpening. The purpose of jointing is to ensure that all surfaces to be sharpened are of a consistent size and all imperfections have been removed.

Jointing is usually the first step in the process of sharpening:

Jointing is usually carried out infrequently as it removes a lot of material from the edge of the blade.