Here's why it's used:
* Preventing the drill bit from wandering: A center punch creates a small, precise indentation that acts as a starting point for the drill bit. This helps ensure the drill bit stays on track and prevents it from slipping or wandering, especially when drilling on smooth metal surfaces.
* Reducing the risk of cracking: The center punch helps to concentrate the force of the drill bit on a specific area, which reduces the risk of cracking or chipping the metal during drilling.
Let me know if you have any other questions!