2. Attention should be paid here: recognize the switch button of the grinder in the grinding wheel room, the red light stops and the green light goes. For the sake of safety, we can react quickly in an emergency and make the right choice. If the grinding wheel rotates quickly and is used incorrectly, it is very likely that the grinding wheel will break down, so the simpler it is, the more cautious we should be.
3. When the grinding wheel is seriously worn, replace the grinding wheel piece as much as possible, so that the grinding of the new grinding wheel piece will not be too laborious.
4. Then we can start grinding the edge of the drill bit. We can use a diamond pen to repair the surface of the grinding wheel first, so that the drill bit will not rebound when attached, and it will have a very smooth feeling. Only in this way can the grinding look better and the grinding wheel be repaired more finely.
5. When the horizontal blades on both sides are ground, comb the blade groove at the corner again, and pay attention to the fact that the drill tip being used cannot be too large, otherwise it will have an impact.
6. Remember to grind both sides of the drill evenly, so that the force will be uniform and the duration will be longer. You should know that all the cutting edges that need to be used need to be polished, and all standard drills are the same. Finally, when we apply it to different places, we will grind it according to actual needs.