https://www.malknives.com/best-performing-knife-sharpeners/
When sharpening your kitchen knives or any other knives it is important to remember three key things.
First and foremost electric knife sharpeners utilize spinning discs which can create localized heat along the edge of the blade. This can cause damage to the temper of the steel. This translates to inconsistencies in the hardness of the steel along the cutting edge making the blade susceptible to chipping, premature dulling, and corrosion.
By using a manual knife sharpener or sharpening system you can eliminate this possibility. Sharpening systems utilize shoes that are pushed along the edge at a speed that creates very little if any heat, thus protecting the tempering of the steel.
The second consideration is creating a consistent bevel along the entire length of the blade. Because electric knife sharpeners require you to drag a knife through the spinning discs, a uniform bevel edge is difficult to achieve. Th
