A drill bit is a tool that rotates and has the cutting ability at the tip, so you will see one or two at home, especially wood auger drill bit . Many novices who are grinding drills for the first time, always feel that their drills are not standardized. So today we will talk about the correct posture for grinding the drill.
The cutting edge of the drill must swing up and down, and the tail of the drill must not be warped. This is a standard drill grinding action. The main cutting edge must swing up and down on the grinding wheel, that is, the hand holding the front of the drill must evenly swing the drill up and down on the grinding wheel. However, the hand holding the handle cannot swing, and the rear handle must not be tilted upwards, that is, the tail of the drill bit cannot be tilted higher than the horizontal centerline of the grinding wheel, otherwise the cutting edge will be blunt and unable to cut. This is the most critical step. The quality of the drill bit has a lot to do with it. When the sharpening is almost done, start from the edge of the blade and rub it lightly towards the back corner to make the back of the blade a bit smoother.
Regardless of whether it is an HSS cobalt drill bit or a wood auger drill bit, the posture during grinding is still very important. The quality of the drill bit is determined by this to a large extent, so it is still necessary to learn.