![]() ![]() Rattling around loose in a tool box or bag is a sure way to dull the cutting edges prematurely.Home improvement centers often dedicate an entire aisle to drill bits, which come in a plethora of types and sizes for drilling holes in a variety of materials. When you’re not using them, keep the drill bits in their case or index.If the tip overheats, it will lose its sharp edge. The bit won’t bite any more moving fast-it will just get hotter faster. Use low to medium speeds when drilling in hard metal.(Softer metal like aluminum and brass don’t require cutting oil.) Cutting oil keeps the bit cooler by reducing friction and will help the drill bit stay sharp longer. If you don’t have cutting oil, 3-In-One oil is a good substitute that works fine. Stop and add a drop occasionally if it’s a deep hole. When drilling steel or other hard metal, use a drop of cutting oil where you’ll start drilling. ![]()
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