What is the purpose of a nail set?

The purpose of a nail set is to drive nails below the wood surface. When finishing a woodworking project, nails are often set just below the surface to create a smooth finish that can be painted or stained without any visible nail heads. The nail set accomplishes this by providing a small, precise tool that allows the carpenter to tap the nail head deeper into the wood without damaging the surrounding surface. This technique enhances the appearance of the final product, making it more professional and aesthetically pleasing.

The other options do not align with the specific function of a nail set. For instance, removing nails is typically done with a claw hammer or a specialized pry bar. Measuring nail depths is not the role of a nail set, as carpenters generally rely on visual judgment for depth based on experience and standard practices. Securing wood before nailing is accomplished with clamps or fasteners, rather than through the use of a nail set, which is intended solely for the purpose of seating the nails properly.