How to Polish Knife Blade Scratches

Are you looking for an easy way to polish scratches off your knife blade without sacrificing the sharpness and integrity of your blade? If so, then you’ve come to the right place! In this blog post, we’ll discuss how exactly you can easily bring your knife back to its original condition. 

How to Polish Knife Blade Scratches

We will cover everything from items you need, a step-by-step process on how to polish knife blade scratches, and more. Regardless of what caused these scratches in the first place – clumsy handling or excessive use, it’s time to stop worrying and start polishing!

Can You Get Scratches off a Knife Blade?

The answer to this question is yes! It is possible to get scratches off a knife blade, depending on the blade type and how deep the scratches are. To remove shallow scratches from a stainless steel blade, you can use a soft cloth and metal polish or cleaning compound to gently buff out the scratches. 

For deeper scratches, you may need to use a fine grade of sandpaper to remove the top layer of the steel and then buff out the scratches with the metal polish or cleaning compound. You can also go to a knife sharpening service for professional help removing scratches from your blade.

When attempting to remove scratches yourself, it’s important to use caution and make sure you’re using the right tools and products. If you don’t have the right supplies or don’t feel comfortable working on your own knife blade, turning to a professional sharpening service will ensure that any damage done is minimal and reversible.

No matter how deep the scratches are, it’s important to be gentle when handling your blade. Avoid using harsh chemicals, abrasives, or scrubbing tools, as these can cause further damage. Taking your time and following proper knife care procedures will ensure that your blade looks its best and lasts a long time!

With the right tools and techniques, it is possible to remove scratches from a knife blade. Whether you choose to do this yourself or take it to a professional, the best way to avoid scratches on your blade is to follow proper knife care procedures and handle your knives with care.

7 Methods on How to Polish Knife Blade Scratches

1. Use a Soft Cloth

Start by using a soft, lint-free cloth to buff out the scratches. Gently rub the cloth along the length of the blade in one direction. The goal is to use the cloth to even out any ridges and bumps in the blade caused by the scratches.

Lint-free Cloth to Buff Out the Scratches

If needed, you can use a small amount of water or oil to help lubricate the cloth. It is important not to use too much as this can damage the blade’s finish. Although it may be tempting to use a harder cloth for this purpose, it is important not to as this can cause further damage.

2. Use Toothpaste

If the scratches are still visible, try using a non-abrasive toothpaste to buff them out. Use a soft cloth to apply a very small amount of toothpaste onto the blade and gently rub it in. Use circular motions, then wipe away any remaining residue with a clean, damp cloth. Repeat this process until the scratches have disappeared.

Make sure you don’t use any toothpaste that contains baking soda or other abrasives, as these can cause more damage. Be sure to rinse the blade thoroughly with soap and water before you put it away.

3. Use Metal Polish

If you can’t get the scratches out with a cloth or toothpaste, try using a metal polish. Metal polishes are designed to fill in scratches and make metals look like new. Work a small amount of the polish onto the blade with a soft cloth and rub it in circular motions. When the scratches are filled, use a clean cloth to buff off the polish.

If you’re still not satisfied with the results, repeat the process until you get the desired effect. Be sure to keep your blade clean and dry after use to prevent any further damage. With some patience and a bit of elbow grease, you can restore your knife blade to its original luster.

4. Use Baking Soda

Make a paste out of baking soda and water and use it to buff out the scratches. Use a soft cloth or sponge to apply the paste and rub away in the same direction as the scratch. 

Baking soda contains mild abrasives that can remove minor scratches. Rinse with clean water to check your progress, and reapply the paste as necessary. Avoid harsh abrasive cleaners since they can damage the blade. When finished, be sure to rinse and dry the blade thoroughly before storing it.

5. Use Vinegar

Soak a cloth in vinegar and use it to buff out the scratches. The acid in the vinegar will help to remove any rust and oxidization. Gently rub the blade with the cloth, using circular motions. This method works particularly well on carbon steel blades. 

Soak a Cloth in Vinegar

Be careful, though, because vinegar can be corrosive and may damage some types of blade material or coatings. It’s best to test the vinegar on a small area of the blade before using it more widely. Although vinegar is an effective polishing agent, it’s not a substitute for regular cleaning and maintenance of your knife. Make sure to clean and oil the blade regularly to prevent rust and oxidation.

6. Use Lemon Juice

Soak a cloth in lemon juice and use it to buff out the scratches. Lemon juice is naturally acidic and can break down the metal to help diminish the appearance of scratches in stainless steel blades. For harder metals, such as carbon steel, the acidity helps to break down the metal at a molecular level, which can help reduce or even completely remove very light scratches.

Be sure to dry the blade thoroughly when finished and apply a light coat of oil to prevent corrosion. However, lemon juice is not recommended for softer metals, as it can cause more damage than improvement.

7. Use Sandpaper

If the scratches are still visible, you may need to use a fine grade of sandpaper to remove the top layer of steel and then buff out the scratches with metal polish or cleaning compound. Be sure to use caution when working with sandpaper, as it is easy to cause further damage if used incorrectly.

Use a Fine Grade of Sandpaper

Although this process may take some time, it is worth the effort to get your knife blade looking like new again. After sanding and polishing, be sure to clean the blade with a mild soap and water solution to remove any metal particles from the surface. You may also want to consider using mineral oil on the blade to help protect it from further scratches or damage.

Keep in mind that if the scratches are too deep or if you aren’t comfortable working on your own knife blade, it may be best to take it to a professional sharpening service. This will ensure that any damage done is minimal and reversible.

Things to Consider When Polishing Knife Blade Scratches

1. Choose the Right Polishing Material

Make sure you use the right materials for polishing your knife blade scratches. Steel wool, ultra-fine sandpaper, or a fine-grit honing stone are all good choices for most types of knives.

2. Take Your Time to Polish

Polishing your knife blade scratches requires patience and attention to detail. Take your time and be careful not to move too quickly or apply too much pressure. This can cause more damage than good.

3. Use a Gentle Touch

When polishing the scratches out of your knife blade, it’s important to use a gentle touch. Pressing too hard will only make the scratches worse and possibly create new ones. Make sure you use light, even strokes with just enough pressure to remove the scratches without leaving any new ones behind.

4. Test on an Inaccessible Area

If you’re unsure of how well the polishing material is working, test it on an area that isn’t visible. This will help you get an idea of how it is working and ensure that you don’t cause any further damage to the visible parts of your knife blade.

Damage to the Visible 
Parts of Knife Blade

5. Apply Oil After Polishing

Once you have polished out the scratches on your knife blade, make sure to apply oil or wax to protect it from further damage. This will also help to keep your blade looking clean and shiny. Be sure to use a food-safe oil if you plan on using the knife to prepare food.


Now that you know how to polish knife blade scratches, put your new skills to the test. Whether you’re trying to fix up an old kitchen knife or make a new one look its best, polishing is key to maintaining a sharp edge and gorgeous finish. 

With a little time and effort, you can bring any scratched-up blade back to its original glory.

Photo of author

Enrique Howard

Hi, I am Enrique. I started my professional life as a handyman and did a lot of external and internal repair of home and office with a little bit of electric and plumbing support. I have extensive experience in tools testing such as drilling, turning, milling, and non-conventional machining like EDM. So let me help you on your journey towards becoming an enlightened DIYer with amazing tools that you can use on your project.

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