What type of angle is the center punch sharpened to?

• A. 60 degrees
• B. 90 degrees
• C. 30 degrees
• D. 45 degrees

Answer: (B)

The center punch is typically sharpened to a 90-degree angle. This design gives the punch a strong point that is effective for marking metal surfaces without slipping and provides enough force to create a divot in the material to guide drill bits accurately. The 90-degree angle allows for a clear, defined mark that can be easily located when starting drilling or machining operations.

While the other listed angles might have specific uses in different tools or applications, they do not provide the optimal characteristics required for a center punch. A 60-degree angle is often utilized in countersinks or conical shapes, a 30-degree angle could be too pointed for the function of a center punch, and a 45-degree angle is typically associated with chamfering edges rather than the function of marking or starting a hole accurately. Thus, the 90-degree angle is the ideal choice for enhancing precision in alignment and drilling tasks.