Grinding discs are not typically used to sharpen kitchen knives

Material Damage: Grinding discs are designed for aggressive material removal and can remove a significant amount of metal quickly. When used on a kitchen knife, they can remove too much material, leading to a loss of blade thickness and potentially damaging the knife.

Heat Generation: Grinding discs generate a significant amount of heat due to the friction between the abrasive material and the object being worked on. This heat can quickly temper the blade, making it softer and less effective as a cutting tool.

Precision: Sharpening kitchen knives requires precision to maintain the correct angle and edge geometry. Grinding discs do not provide the level of control needed for this task and can easily result in an uneven and jagged edge.

Safety Concerns: Using a grinding disc on a knife without the proper skills and equipment can be dangerous. It's easy to lose control of the knife, potentially causing injury to the user.

To sharpen kitchen knives effectively and safely, it's best to use specialized sharpening tools designed for the purpose, such as sharpening stones, honing rods, or electric knife sharpeners. These tools allow you to maintain the correct angle and control the amount of material removed during the sharpening process, resulting in a sharp and well-maintained edge. Additionally, they generate less heat and are safer to use for this specific application.