10 Tips to Drill through Metal

Before drilling metal, choose the right kind of bit. For softer metals, like aluminum, a high-speed steel bit will work. For steel or other hard metals, use carbide, cobalt, or titanium. Put on a pair of work gloves and safety glasses, then clamp down the piece of metal to hold it steady while you drill. Draw an X on the metal where you want to drill, then make a dent on the mark with a hammer and center punch. Put a coin-sized amount of cutting oil on the spot to help lubricate and cool the drill bit. Hold the drill perpendicular to the metal and squeeze the trigger lightly while applying pressure to help push the bit through the metal. If the metal starts to glow or get too hot, take a break and add more cutting oil. Once you pierce the metal, switch the drill to reverse and carefully pull the bit out. Smooth the edges of the hole with a deburring tool when you’re done.