![]() ![]() You’ll know you’ve done it correctly when you inspect the drill bit tip. To ensure each side of the cutting edge gets equal treatment, turn the drill bit through 180⁰ after two or three goes and repeat the process the same number of times. Rotate the drill bit slightly as you grind away to get a curved surface on the tip. Look for any unevenness in the surface and correct this on the next go. Check the tip of the bit to see how it’s going – a magnifying glass helps with this. Overheating will anneal the steel, making it unsuitable for cutting more challenging materials such as metal.ĭo this in 5-second bursts and then dip the end of the bit in the water to cool it down. Keep checking for any change in colour (red or blue). The intention is to remove the worn material, not reduce size. I know that sounds very precise, but basically, keep the sloping tip parallel to the face of the grinding wheel.Īpply slight pressure as you engage with the wheel. The drill bit should be 60⁰ for a wood/metal bit and 67⁰ for a masonry bit (roughly equal to half the original point angle). Start up the grinder and offer the drill bit up to it, using the tool rest to support the head. But first, let’s look at the tools and materials you need.Įnsure you have all the tools below before you start. In the step-by-step instructions below, I show you how to sharpen a drill bit freehand using just your bench grinder. What is important is that the two sides of the bit head are equal in width and angle. However, I don’t regard 118⁰ as essential in creating a sharp drill bit. If you have a bench grinder, the Sealey grinding attachment represents good value at less than £30, and you can use it on an extensive range of bit sizes. One of the best on the market is the Drill Doctor, but at a cost ranging from £110 to £230, you need to sharpen a lot of drill bits to make this worthwhile. ![]() hold the drill bit at the correct angle while an internal grinder does the sharpening. Others attach to a power drill and act as a grinding wheel. Most of these gadgets work by holding the drill bit at a precise angle (118⁰) to the grinder. Many gadgets are available to help you sharpen a drill bit, some better than others. Masonry bits are often tungsten carbide tipped, making them tough to sharpen with a standard grinder, but you should still tidy up the cutting edges from time to time.īefore we get into the step-by-step instructions, let’s look at the parts of a drill bit and the various sharpening aids available. Manufacturers typically make drill bits out of carbon steel or high-speed steel. The most common materials drill bits have to deal with are: There are many drill bit types because each has a specific way of drilling a hole. So if you want to save yourself some money, read on. I tried a few of them, but the most straightforward process I found is the one I will show you in this guide. I researched how to sharpen a drill bit and found several methods using various tools and gadgets. Then a friend told me how easy it was, and since then, I haven’t purchased a new drill bit. The DD750X also adds increased capacity, sharpening 3/32" to 3/4" bits.Until recently, I had never sharpened a drill bit, as I thought it was a job for experts. The DD750X shop model is designed for durability and has the flexibility required to sharpen the largest range of dull or broken bits, including split-points and masonry bits. Custom Point angle sharpening allows choice from any angle between 115 degree to 140 degrees. Sharpens High-speed Steel, Carbide, Cobalt, TiN-coated and Masonry bits. ![]() A permanent magnet motor produces consistent power, regardless of speed or load. Cast aluminum point angle shuttle for added durability. Includes standard 180 diamond grit sharpening wheel that is easy to replace. Adjustable material take-off allows flexibility in the amount of bit material that can be removed to further extend bit life. "Push to Stop" design on the drill point splitting port prevents over or under-splitting. Long chuck jaws and guides hold bits precisely and eliminate twisting on small diameters. ![]()
0 Comments
Leave a Reply. |