How to sharpen the knife and make it durable

A sharp and durable sharpening method;

1, don't grind it too fine.

The greater the blade angle, the more durable the knife is, but the sharpness is insufficient; On the contrary, the smaller the blade angle, the sharper the knife naturally. So many people will make the blade extremely thin in order to pursue the ultimate sharpness, but when you are really practical, you will find that such a blade is not easy to curl and crack, and it is extremely durable.

Therefore, according to your purpose, you can open a suitable blade angle without pursuing the effect of blowing hair and breaking hair. Efficient work efficiency and retention are the truth.

2. The oilstone may be unqualified

Many people ignore the importance of sharpening stones, and often just look for a big bluestone or the bottom of a bowl. First, it is difficult for this rough grindstone to sharpen a sharp blade. Second, its contact area with the cutting edge is not tight enough, and the grinding speed is uneven, which will produce serious virtual edges, and the cutter body and cutting edge are covered with scratches.

Therefore, using a smooth, soft, light, delicate and sharp whetstone as far as possible can increase the actual contact area with the blade, and then gradually polish it according to coarse, medium and fine, which can greatly improve the grinding speed and weaken the grinding marks. In addition, when sharpening the knife, remember to lay a towel under the oilstone to reduce the impact.

3. Reverse the blade in time

If the two sides of the blade are asymmetric and the edge line is irregular, the cutting resistance of the blade will increase and the blade will be easily deformed.

4. Don't grind it into horizontal ribs or X ribs.

In the wear marks, the horizontal edge pattern and the X edge pattern are harmful, especially the horizontal edge pattern, which is perpendicular to the cutting resistance of the blade and the blade is easy to break or curl along the edge pattern. However, the longitudinal edge grain is in the same direction as the cutting resistance of the cutting edge, which has strong supporting ability and is beneficial to improve the retention rate.

5, leather swinging knife, can prolong life.

Using the leather pendulum knife can remove the residual burrs and serrations of the blade and repair the micro-cracks of the blade. This kind of blade strengthening or passivation can usually prolong the tool life by two times or more.

6. Keep your hands steady and don't be impatient.

Finally, in addition to the above skills, the most important thing is to keep your hands steady and control the sharpening strength, pushing speed and sharpening angle. Because, for the grinder, no matter how good the technology is, it can't save a short-tempered heart.