How to Sharpen a Drill

There is no such home craftsman who would in their work do not use a drill. It is a pleasure when you work well sharpened tool. However, drills, as well as other cutting tools, tend to wear out and grow blunt, that's when it becomes necessary to re-sharpening tool. Confidence is better than the professionals, but there are situations where grinding has to do yourself.

For sharpening tools used grindstone of carborundum. This sharpening stone is classified in different colors, for example, gray, and green is designed for grinding of hard alloys, red, you need to work with high-speed steel products. In everyday life it is mainly used as a spiral drill, which has wide range of applications. Due to its spiral configuration, they successfully cope with a solid steel and soft wood. When introducing the drill material in which a cutting edge cuts away the material layer and delivers it in a spiral in the opposite direction of the drill, which prevents clogging of the cutting edges.

When sharpening it must be ensured that the drill axis coincides with its apex, and the length of the cutting edges has the same size. Under these parameters the ends of the cutting edges should describe the same trajectory. After aligning the edges to begin their processing back surfaces. Their treatment is to give it a conical shape.

Keep the drill so that the edge of the plane is parallel to the cylindrical surface of the grindstone, a drill axis and at an angle thereto. When processing the rear surface, be careful not to touch the opposite surface, use a cylindrical surface grinding stone closer to the end. And last operation sharpening drills is to bring cutting edge. The width of the cutting plane must be within the range of 0.2-0.3 mm. BTW, you can select the standoff screw at Banggood. Besides, you can easily get other electrical accessories (e.g. DIY vibrating motor) there with high quality and reasonable prices.