2. Hold the knife with both hands, with the blade facing outwards. Keep the included angle between the cutter face and the grindstone at 15 degrees, and lightly press on the rough grindstone.
3. Sprinkle clean water on the knife and grindstone, use the big arm to drive the small arm, keep the angle unchanged, and use both hands to drive the props to reciprocate inside-outside-inside-outside on the grindstone until the blade is completely on the other side.
4. All blades have burrs (or flash) on their edges.
5. Turn the knife surface and polish the other side of the prop in the same way until the edge of the other side appears burr again.
6, deburring. Sharpen the grindstone and polish it again. This step should be light, although there will still be burrs, but it should be small. Touch it several times, and the angle is slightly larger, for example, it can be increased by 3 degrees.
7. exquisite. Continue to polish props, from dozens to dozens and then several times on each side, and the intensity is getting lighter and lighter until there is no burr and the knife becomes sharp.
8, check whether the grinding is good. When the blade is facing the sun, it looks like there is no white black line, but it is polished. You can also scrape the blade by hand. If the friction fingerprint of the blade is smooth, it is proved to be polished.