During the operation of the file, its ability to process various materials gradually decreases.
There are only two reasons: - the notches are erased / dulled
- the space between the notches is filled with metal dust (waste of the treated surface).
During the operation of the file, its ability to process various materials gradually decreases.
There are only two reasons: - the notches are erased / dulled
- the space between the notches is filled with metal dust (waste of the treated surface).