The face end of a ball peen hammer is used for driving chisels or punches.

• A. Riveting
• B. Chisels or punches
• C. Smoothing metal
• D. Cutting metal

Answer: (B)

The flat face on a ball peen hammer is designed for driving chisels or punches because it provides a broad, square contact surface that transfers force cleanly into the tool. That straight, centered blow keeps the blade or punch aligned and prevents edge damage or mushrooming, giving a solid, controlled impact.

The other end—the ball—exists for shaping and peening metal, such as smoothing or forming rivet heads. Its rounded surface concentrates force differently and isn’t suitable for driving chisels or punches without risking damage to the tool or workpiece. A hammer isn’t used to cut metal, and finishing or smoothing work is typically done with appropriate tools or softer impacts, not by driving chisels with a rounded end.