Operating tools: scissors, grindstone, detergent.

1. First, clean the scissors and wash them with water.

2. Then you can add some detergent.

3. Then check the knife edge and find out the part to be ground. This pair of scissors has three angles and needs to be ground according to angle ①. When the other side is made by itself, generally don't grind it.

Put the millstone in a stable place and add enough water on it. Lack of water on the grinding disc will hurt the blade.

5. When grinding the scissors blade, stick the blade surface of ① above on the grindstone and flatten it. There are two points to note here: First, keep your hands steady and press ① to polish the edge surface. If you don't shake it well, the edges will be rounded and the scissors will be scrapped. The second is to follow the knife sharpening (according to the direction of the yellow arrow). The choking knife sharpening will make the blade overturn.

6. Grind the center and tip in turn.

7. If the plane (the other side) needs polishing, it must be leveled and polished as little as possible.

8. Then check, gently rub the blade with your fingertips, and the feeling of scraping your hands indicates that the sharpening procedure is no problem.