What is tumbler knife sharpener?

A tumbler knife sharpener is an electric sharpening tool that uses rotating abrasive wheels or belts to sharpen knives. The knife is placed in a slot or clamp, and then the abrasive material grinds away the dull edge of the blade, sharpening it to a razor-sharp edge. These sharpeners are popular among home cooks and professional chefs as they are easy to use and can quickly sharpen dull knives. They are also a cost-effective option and typically require minimal maintenance. However, using a tumbler knife sharpener requires caution and attention to detail, as it is possible to over-sharpen a knife and damage the blade.