How to Sharpen Blender Blades at Home

Blender Tips & Advice

How to Sharpen Blender Blades at Home
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When it comes to keeping your blender blades durable, you’re going to have to do some maintenance. Depending on what type of blender you’ve got and materials the blades are made of, you may have to sharpen the blades yourself.

However, doing this alone can be risky as the blades are sharp and can easily cause injury. If you’re worried about the process on how to sharpen blender blades and your warranty doesn’t cover blade sharpening or replacement parts, we’ll walk you through the process.

How to Sharpen Blender Blades

This is an effective method for sharpening blender blades. You will need the following:

  • Blender
  • Soap
  • Water
  • Multiple towels
  • Sharpening stone
  • Protective gloves


1. Determine If You Can Disassemble the Blender

Different models of blenders exist, and some of which don’t allow you to take apart the pieces. If you can’t separate the blades from the container, then it’s possible you won’t be able to sharpen the blades on your own. If this is the case, we recommend that you purchase a new blender or contact the company to see if they can help refer you to replacement parts or help solve your problem.

In case you can disassemble the blender, begin doing so after you’ve unplugged the device, as this can help prevent injury. From there, you’ll want to take each section apart. Although we don’t recommend unscrewing any of the blender’s part since this can lead to damages.

2. Wash Each Section Carefully

It’s best to always work with a clean blender, as this will prevent any issues from occurring. Sticky food residue not only makes it harder to sharpen but can also cause it to slip and cut your hand while working.

Firstly, take apart the blender and wash each section which can be placed in water. This likely includes the glass container, blade section, and the lid. The motor can easily be wiped down with a damp paper towel, or at most, use a bit of soap before wiping it dry. But we recommend cleaning it with a sanitary wipe.

The blades are the main section you’ll be working with, so it’s best to inspect every nook and cranny to get all of the dirt and grime out. After you’ve cleaned each section, pat it dry with a clean paper towel or kitchen cloth.

3. Remove the Blades

Now we’ve reached the dangerous part of sharpening the blades. At the base of the device, you will see the blades attached. You’ll want to thoroughly inspect the base and see if they can twist out of the base. If they can’t, you won’t be able to sharpen the blades yourself.

If they can, you’ll want to carefully twist them counterclockwise to help separate the blades from the base. Using cooking mitts or even protective gloves can help prevent injuries while doing so. Do not grip the blades with your bare hands, as you can seriously injure yourself.

After you’ve separated the two, you should have the base of the device, a protective ring or seal, and the blades. All of these parts should be separate from the bottom. Handle these with care and place everything down carefully on a folded towel.

4. Wash Blades Again

Now that you’ve separated the blades, you’re going to need to wash underneath the blade section. It’s possible that there is food residue leftover from months to years of use.

Be very careful when washing this section as you’ll want to use a minimal amount of soap and rinse the blades. Once they are sufficiently clean, you can begin sharpening the blades.

5. Sharpen Blender Blades

Once the blades are dry, position the blade’s sharpest side away from your body and on top of a sharpening stone. From here, begin to run it against the stone, keeping the blade at a slight angle and pushing it away from your body. Once you’ve run the edge across the stone several times, flip it over and do the same to the opposite side.

Each blender blade should have approximately four sides to sharpen. Two located in the black of the blades and two located in the front; although it’s going to be highly dependent upon what type of make and model you have. Either way, repeat the process with all of the blades until you’ve got a sharpened edge on every side.

You can quickly tell when the blades are sharpened as they will have a slight glint to them and appear to be sharper. Don’t be tempted to touch the edges with your hand since if they are sharpened, they can easily slice. We recommend waiting to assemble the blender and testing it out to see if the blades are truly sharpened.

6. Put Everything Back Together

Now that you’ve sharpened the blades, it’s time to put everything back together. Place the protective ring back into the base of the blender and then screw in the blades. Ensure that everything is locked in place before attaching the glass container and securing it back onto the motor of the blender.

Once everything is in place, you can do a test run by attempting to make a simple smoothie or chopped vegetables. If the blades work efficiently, then you’ve completed the process of how to sharpen blender blades. However, if they still seem dull, then we suggest repeating the process until you get the desired results.

Are There Any Possible Complications?

As we’ve stated, not all blenders can be taken apart. Most high tech blenders or recent models will allow you to take apart each section. However, lower grade blenders usually are stuck together and won’t come apart.

If you can’t sharpen the blades yourself, the company you’ve bought it from may be able to assist you. Contact their customer support, and sometimes you’ll be able to get replacement parts or a whole new blender if the warranty covers it.


As you can see, sharpening the blades of your blender is a daunting and dangerous task. We don’t recommend this method unless you’re comfortable working with sharp objects. If you haven’t used a sharpening stone before, we suggest getting help from someone who does.

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