The correct usage of metal hammer is as follows:
Hold the handle end of the sheet metal hammer easily by hand (1/4 of the total length of the handle).
When holding the hammer, the index finger and middle finger under the hammer handle should be properly relaxed; The little finger and ring finger should be tightened, so as to form a flexible shaft.
(2) When hammering the workpiece, keep your eyes on the workpiece to find the hammering point. When the hammer falls, it is mainly held by your index finger and thumb. The key to the quality of hammering operation lies in the choice of impact point. Generally, the principle of "first big, then small, first strong, then weak" should be followed, and the hammer head should be hammered in sequence from the place with large deformation to ensure that the hammer head is flat on the metal surface. At the same time, pay attention to the structural strength of sheet metal parts and arrange the placement of sheet metal hammers in an orderly manner.
Shake the wrist and gently tap the surface of the body part, and make circular motion by using the rebound force generated when the metal hammer hits the part.