When using a non-elastic hammer, there are many places that need to be paid attention to to avoid damage to the knocked parts. When some parts are loose, you can also use a non-elastic hammer to hit and fasten. When using a hand hammer, it should be noted that the connection between the hammer head and the hammer handle must be firm. If it is slightly loose, you should immediately tighten the wedge or replace the hammer handle, and the length of the hammer handle must be moderate. The more suitable length is Hold the hammer with the forearm as long as the hammer. When a small striking force is required, the hand swing method can be used, and when a strong striking force is required, the arm swing method should be used; when using the arm swing method, attention should be paid to the movement arc of the hammer head and the handle of the hammer. Should not be contaminated with grease.