A dull knife can be more dangerous than a sharp kitchen knife. Because you need to use more force in order to cut a dull piece of metal, this is why it is so dangerous. Instead of the blade becoming dull, what happens is that the sharp edges begin to fold over themselves when cutting or chopping. There are many other reasons that a knife can become dull over time.
For example, your cutting board could be making your knife duller over time. The best way to maintain the knife's edge is to use wood cutting boards that show the end grain. A dull knife blade can happen even if you use a wooden cutting board. Many households have moved to other materials. You can also buy a blade sharpener from Aussie Outback Supplies.
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Your knives are an important part of being a great chef. Sharpening knives is an important skill. It can be done at home with the right tools. The best knife sharpeners are the two-stone models.
Two stones are inside an electric knife sharpener. They spin around. The best way to sharpen a knife with a two-stone electric razor is to hold it up to the handle and place the blade edge away from you. You should draw the knife handle towards you with a smooth, not jerky motion. Smooth firm motions provide an even result, as the knife can be used on both sides simultaneously.