Just like you need to sharpen the blade of a knife, it's not surprising that you might wonder if the sharp blades on your food processor also need to be sharpened, or even replaced. To find out if this is the case, we turned to the experts at Cuisinart.
"Blades and discs for our food processors rarely need to be replaced if they are cared for and used properly," says Mary Rodgers, director of marketing communications for Cuisinart and Waring. The only time you ever need to replace them is if they get damaged by improper use or if they're dropped (and indeed, the Cuisinart website sells these replacement parts, but at around $50 for a food processor blade, they're a bit pricey).
Caring for Food Processor Blades
To clean the food processor blades and discs, rinse them immediately after each use so that food won't dry on them, which will make it stick and be harder to remove. To clean blades by hand, wash them in warm soapy water. Use a sponge or a textured scrubber, scrubbing from the center of the metal blade to the edge to avoid cutting yourself.
The harsh detergent and hot water in a dishwasher aren't really good for the food processor or blender blades, even if the instruction manual says they are dishwasher safe, so we recommend always washing them by hand. But if you do clean your blades in the dishwasher, put them on the top rack. If they go on the bottom rack of the dishwasher, they could get damaged over time from the intense heat of the water. "Never use abrasive cleaners on your blades and discs," says Rodgers.
Caring for Blender Blades
To clean the blades of your blender, remove the blender jar from the motor base by lifting the jar straight up and away. Twist off the locking ring, and separate it from the rubber gasket and the cutting assembly according to your manufacturer's instructions. Wash the cutting assembly in warm soapy water, rinse and dry thoroughly. For most blenders, the locking ring can be washed in the upper rack of a dishwasher, or wash it with warm soapy water.
For blenders that do not have a removable blade, immediately after using, fill the blender jar about 1/3 full with warm water and a drop or two of dish detergent. Put the lid on the blender and run it at medium speed for about 10 seconds. Then rinse the blender well with fresh water, using a sponge to wipe any remaining residue from the blade or the interior of the jar.
So with the proper cleaning and care, your blender and food processor blades should last the life of the appliance itself.