Using a lathe to sharpen drill bits7/29/2023 It pays in the long run.Just like lathe tools, the cutting edge of a twist drill needs relief behind the edge if it is to cut. It takes a lot of time and practice to get a perfect grind, so don’t give up. Hiring someone to do the sharpening costs money, and that’s what you need to avoid. Now that you’ve learned how to sharpen a drill bit, you need to practice what you’ve learned. Use the Stop-and-cool technique when grinding.You can switch to a re-sharpened bit once the hole is started. Start holes using a like-new or new drill bits.When drilling hardwood, have a cup of water nearby to cool the bit.Here are some useful tips for keeping the drill bits sharp longer. The sharpening process is tiresome, that’s why you need to strive to keep your drill bits sharp for a long.Top Tips for Keeping Your Drill Bits Sharp For Long When it is sharp enough, it should be able to drill holes in pieces of wood without you having to apply much pressure. Ensure it is held firmly in position before you can use it. Once the drill bit gets sharp enough, insert it into your drill machine. Keep testing the drill bit after grinding. ![]() While at the grinding wheel, always try to maintain the 60-degree angle and equal with grinding on both sides. You may have to return to the grinding wheel several times before you achieve the perfect sharpness. If it cannot drill a hole, you must return to the grinding wheel. Just use a little pressure and see if it can drill a hole. Hold its tip perpendicularly against a piece of wood, then twist it by hand. Once both sides of the drill bit meet at a point and both edges are of the same width, give the drill bit some test. YouTube Video Credit: Thomas Foxhttps: STEP 6 - Test Always remember to cool the bit after every grinding process. ![]() You can do that, or grind one side entirely before flipping to the other side. After grinding one side for a few seconds, they flip over to the other side. Some people prefer to work on both sides of the bit, sharpening a little on each side to ensure balanced sharpening. Remember to aim for the 60-degree angle to ensure the bit will drill straight holes. Use the same process of grinding, pausing, and cooling with ice-cold water. Once you complete the first side, you can turn the bit through 180 degrees to grind the other side. If not, you can continue grinding until you are satisfied. After dipping it in cold water, check to see whether it’s honed adequately on the side you just worked on. You can use the ice-cold water to cool the drill bit. When the bit is too hot, it may wear out faster, thereby shortening its effective lifespan. This is necessary to give the metal some time to cool down otherwise, it can become too hot for you to hold. You should be grinding and pausing after every five seconds or less. Your aim should be to grind the heel of your drill bit, where the twisted shaft meets the tip so you can achieve a good angle. Should remain in contact with the wheel, the aim is to grind away the dull surface, so if you let it stay longer, it may get worn out. The drill sharpening angle should be 60 degrees for not more than five seconds. Try to keep it straight and hold it such that you maintain an angle of 60 degrees, which is the factory angle. Move the bit carefully and slowly towards the grinding wheel until they become into contact. ![]() Hold the drill bit firmly, ensuring that its cutting edge lies parallel to the front of the wheel. For this first, Put on the safety goggles. STEP 2 - Safety Gogglesīefore you start grinding your drill bit you need to know how to sharpen a drill bit with a grinder. If your bit is not much ravaged, you can use the fine grinding wheel. The coarse wheel removes bigger pieces of metal, and it’s the one you need to start with when dealing with highly ravaged drill bits.Īfter you are through with the coarse wheel, you can switch to the fine wheel for a smooth finish. Bench grinders come with two grinding wheels, one fine, and the other coarse wheel. That’s why you need to examine your drill bit to decide how much metal you need to remove. Removing too little metal will not sharpen it while removing too much metal will make it wear out faster. Sharpening a drill bit involves removing just enough metal to get a sharp edge. How to sharpen a drill bit with a grinder STEP 1 - Check Your dull bit Otherwise, it may slip and causes an accident. You need to hold the drill bit firmly while grinding. All the other items listed above are necessary. If you find that it impairs your ability to hold the drill bit safely, you can do away with it.
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