Ball Peen Hammer

The ball peen hammer ranges in weight from one ounce to two or three pounds. One hammer face is always flat while the other is formed into the shape of a ball. The flat hammer face is used for pounding, but should not be used to drive a nail. The ball end of the hammer is typically used to peen over rivets in commercial sheet metal work. However this is not the method used for securing rivets in aircraft sheet metal work. Figure 1 shows the example of the a ball peen hammer.

(Figure 1)