Kitchen knives can be sharpened by sandpaper sharpening and ceramic sharpening.

1. Sharpen the knife with sandpaper. To sharpen the kitchen knife, you can use sandpaper to sharpen the knife. First, lay the sandpaper flat on the table, then ensure that the kitchen knife is tilted at about 20 degrees, and then maintain a certain intensity to polish it back and forth. It takes about 2 minutes to make the kitchen knife sharp.

2. Ceramic sharpener. To sharpen a kitchen knife, you need to use a ceramic sharpener. Turn the ceramic bottom upward and apply toothpaste on the kitchen knife. The friction molecules in the toothpaste can increase the friction between the kitchen knife and the ceramic. Then proceed Sand back and forth, and you need to add salt water during the polishing process, and polish for 5 minutes.

When using a kitchen knife, you should try to minimize contact with corrosive items or liquids to avoid affecting the molecular structure of its surface. In addition, after using the kitchen knife, you should wipe it clean with a dry rag and place it aside. Store in a ventilated place to reduce oxidation of the blade surface.