Use the chart below to find the ideal saw blade and drill bit to use for piercing a given thickness of metal. First determine the metal's thickness, or B&S gauge. Keep in mind that a thicker piece of metal requires a larger saw blade. The corresponding drill bit number will create the smallest hole that the saw blade can be threaded through. See the Drill Bit Sizes and our Relative Sizes charts for more information.
Download and print off our Metal Piercing Chart PDF