What is a nail punch used for?

A nail punch, also known as a nail set, is a tool used to drive the head of a nail below the surface of the wood or material, preventing it from protruding. This is particularly useful for achieving a smooth finish in woodworking projects, allowing for the nail to be filled or painted over. Nail punches come in various sizes to accommodate different nail types and are often used in conjunction with a hammer for effective operation.