the drill bit as new
DIY HOW TO SHARPEN THE DRILL BIT
To properly sharpen a drill, you need to pay attention to three main points:
1. Angle of sharpening of the drill.
2. The angle between the cutting edges of the drill.
3. It is necessary to remove the metal that is behind the cutting edges in the direction of rotation of the drill, so that nothing interferes with the cutting edges of the drill to do their job. This video shows how to make a simple device that allows any vertically moving abrasive plane (angle grinder disc, grinder belt, grinder side, etc.) to obtain satisfactory sharpening angles of the drill. You can, of course, do without such a device, but if you do not have extensive experience in sharpening drills, it is unlikely that you will be able to sharpen the drill correctly.
There are many devices available to help you sharpen a drill, but they are usually difficult to use. It takes only a piece of wood and very little time to make a simple device for sharpening drills, as a result, you get a simple tool that will justify its purpose 100%.