What is the primary purpose of a center punch?

The primary purpose of a center punch is to create a guide for drilling. A center punch is specifically designed to make a small indentation in the surface of the material, which helps to prevent a drill bit from wandering when starting to drill. This indentation, or "dimple," serves as a precise point for the drill to begin, ensuring accuracy and better placement of holes.

The center punch accomplishes its purpose by impacting the surface with sufficient force to create a small, controlled dent. This is especially useful in metalworking, where a drill bit could easily slip on a smooth surface. Therefore, while the action of denting metal is part of its function, the overarching purpose is to establish a guide for the drill bit. By providing this guide, it enhances the overall drilling process, making it more effective and precise.