It is common to own a food processor, and it is an instrument that can last a lifetime. After some time, it may start to malfunction, which is usually related to blades that are no longer cutting properly. There’s no need to buy another one; a simple sharpening can restore its original function and add a few more years to its lifespan. The blades must be sharpened with care as they are curved and have a cutting edge on one side only, unlike a regular knife.