(1) In order to prevent the file from being worn too quickly, do not use the file to cut the hard skin or work of the blank.
The hardened surface of the piece should be processed first with other tools or with the front end and side teeth of the file.
(2) When filing, one side of the file should be used first, and then the other side should be used after this side is blunt.
Because the used cut teeth are easy to rust.

(3) Make full use of the effective working surface of the file when filing to avoid local wear.

(4) The file cannot be used as a tool for assembly and disassembly, knocking and prying, to prevent the material of the file from being damaged.
brittle and broken.

(5) When using plastic files and small files, the force should not be too large to prevent the knife from breaking.

(6) The file should be waterproof and oil-proof. The file is easy to rust when wet. When the file is working after oiling
Slippery.

(7) During the filing process, if it is found that there are chips embedded in the filing pattern, it should be removed in time to avoid
No chips will scratch the machined surface. After the file is used up, use a file brush or a copper sheet to brush along the file pattern
Remove any remaining chips to prevent rust. Never blow chips with your mouth to prevent chips
fly into the eye.

(8) When placing the file, avoid contact with hard objects, and avoid overlapping and stacking the file and the file.
Prevent damage to the file.