What is the function of a center punch?

The function of a center punch is primarily to mark hole locations and prevent drill wandering. This tool is used in metalworking and woodworking applications to create a small indentation in the material's surface. This indentation helps ensure that when a drill bit is applied, it has a precise point to enter, reducing the chance of the drill bit slipping off the intended mark.

By creating this targeted mark, a center punch aids in achieving accurate and clean holes, which is especially important during the assembly of structures or components in aviation and other engineering fields where precision is critical. The practice of using a center punch is essential for maintaining the integrity of the materials being worked on and enhancing the overall efficacy of the drilling process.