How to Clean Rust Off a Kitchen Knife

The Guide on How to Clean Rust Off a Kitchen Knife

Oh, wait! Why should I think about rust, when I'm using the best quality kitchen knives from KitchenSteel? More importantly, why do I need to clean rust off a kitchen knife?


For one, did you know stainless knives can rust too?


Whether you're using KitchenSteel classic handmade knives or any other knives, you need to eliminate pepper rusts and dirt off your knives. It will make your knife shine until you can see your face reflecting on the clean blade.


Without further adieu, let's dive in and explore the kingdom of Kitchen knives!


Why do Kitchen knives rust?

Rust forms when air, water, and iron react together. 

Did you know that the iron blades of your favorite KitchenSteel knives contain a secret agent known as "steel"?

Cleaver Ovest Kitchen Steel

 Handmade Chef Chopping Knife "Ovest"


The only knives that don't stain are ceramic knives. And kitchen activities using a ceramic knife isn't as easy as you think.


How to remove rust from my kitchen knives?

There are two ways of getting rid of those rust from your kitchen knives: homemade and natural.


Whichever way you're getting rid of those rusts, make sure to shape up and sharpen those exquisite handmade blades after removing the rust. You can use either synthetic or natural sharpening stone. We will talk more about it below.


Method 1: Use Baking soda

 Ingredients you will need:

  • Baking soda
  • Water
  • Toothbrush
  • Steel wool on a sponge
  • A piece of cloth


1.    Clean your knives

Clean the knife blade thoroughly and get rid of all the dust, because it can interfere in rust removal. Try to avoid water and use some cleaning solution with a cloth.


Why not use water? Because water is the reason why your knives got rusted in the first place.


2. Make a baking soda paste

 The next step is to create a thick paste of baking soda. Add water and little baking soda into a bowl. Then, mix them together to make a paste. You can also use lemon juice - in case you want to go that extra mile. Stir the mixture thoroughly until it becomes a paste.


3. Scrub with a toothbrush

You've cleaned the knife blade and got rid of the dirt. The next step is to apply the thick paste liberally all across the knife blade. Scrub it with a toothbrush only if the rust is not severe, and the bristles of the toothbrush are enough to move it from its place.

In case the rust is severe and is not quickly coming off, follow the next step.


4. Scrub with steel wool

Is your knife blade severely rusted? You will need a little more abrasion to remove the dust. You can use a steel blade to get rid of those strong rusts, but make sure you don't scrub it too hard because it can ruin the finish or even can scratch the blade.

5. Wipe the blade clean

Finally, after scrubbing the blade, use a clean piece of cloth to remove the excess baking soda.

If you want to lubricate your knife blade, spark out the shine, and protect it from future rusts. Apply some mineral oil before you use Ksteel kitchen knives to master slicing.



 Method 2. Try out Vinegar bath

 Ingredients you will need:

  • A pan or a cup
  • White vinegar or apple vinegar
  • A sponge
  • A piece of cloth.


1.    Pour vinegar into a pan or cup

Though you can use apple vinegar, white vinegar is preferable. It has a substance called acetic acid that attacks the rust, just like a lion attacks its prey.


Note: Other types of vinegar may leave a stain on your kitchen knife. So be careful!


2. Soak the knife blade into the vinegar

Soak the rusty part of the knife into the vinegar directly. If you want to avoid soaking it directly into the vinegar, use a paper towel.

Soak the towel into the vinegar and wrap it around your rusty knife blade. Leave it for around 5 minutes.


Don't forget - prolonged exposure can damage the knife blade.


3. Wipe down the blade

Once you're done soaking, wipe the blade. Try using baking soda or WD-40 in case the rust persists.


Method 3.  Did you hear about cleaning knife with WD-40?

 Ingredients you will need:

  • WD-40
  • A fine Sandpaper (not more than 400)
  • A piece of cloth

While it's the quickest and the fastest method of removing rust from your knives, we don’t recommend it for regular use. Try it only when you're trying to get rid of the dust on a larger knife - like a machete or any other knife that you won't use for food preparation.


Remember, WD-40 is harmful, and if ingested, can harm your body. It's why you never use people using it as a lubricant too.


1.    Spray WD-40 on the knife blade

Spritz the affected parts of your kitchen blade with WD-40.

2.    Gently use sandpaper to clean the blade

Before you use the sandpaper, remember to be very gentle with it. It's a good idea to use fine sandpaper. Scrub the rust off the knife blade but make sure not to touch the blade's edge, as it will ruin the sharpness.

3.    Wipe it down

This should be enough to get rid of the rusts. In case the rust is heavier, you need to use a mixture of one or two previous methods together to get rid of that firm and heavy rust.


Advice: Make sure you don't use the knife for any food preparation, if you are using WD-40.


Method 5 Use CLR

 Ingredients you'll need:

  • CLR
  • Warm Water
  • A pair of gloves
  • A piece of cloth


1. Make a mixture

If you're going for this method, make a mixture of CLR with some warm water.

Don't try to go over the top and mix it with any other cleaners because it may lead it to a reaction.


2. Dip the blade into the mixture

After preparing the mixture, dip the rusted knife blade into the mix.


If the handle isn't made of metal, try to keep it away from the mixture.


 3. Wash it off

After the blade is soaked in the mixture for exactly "2 mins", rinse off the blade with cold water. Be quick!


If the stain persists, use strong CRL without diluting it. Then, soak the blade into the solution and wash it off immediately with cold water.


Natural ways to remove rust from your Kitchen Knives

Though we don't really recommend it, if you want to use something handy, go for the following options.


The Onion Method

Onions have sulphonic acids and can get rid of the rust easily. If you stick the knife back and forth into the onion, you'll already see the rust coming off. The acids in the onion will get your blade clean.


The Potato method

Potatoes have oxalic acids and can remove the rust effectively. All you need to do is stick your knife blade into the potato and leave it for some and then wipe it off its oil. This should be enough to get rid of the rust from your kitchen knife.


 The Dirt method


Don't freak out by the name. Let us explain!

Covering your rusty kitchen knife into a rich soil over a couple of times can act as an excellent way to get rid of the rust on your knife blade.



How to prevent my beautiful set of Kitchen Steel knives from rusting?

  • When you wash your knife, make it a point to clean and dry it off before you pack it up. The oxygen in the air quickly bonds with the iron in the blade and becomes the common source of rust.
  • Never wash your beautiful Ksteel kitchen knives in a dishwasher. The heat will cause the metal to expand and contract, which may result in rusting.
  • Avoid saltwater. In case you're working in an environment where you cannot avoid saltwater, try using knives made of ceramic or titanium.


Before closing off!

Now, you may love cooking some delicious dishes – and you will need your knife for that. However, should it come in contact with water – and it will when left open in air and moisture- rusting is evitable. Though KitchenSteel knives are hand-made to make it everlasting and give an exquisite experience, we cannot avoid nature's natural process.


The best way to maintain the exclusivity of our knives, you should take proper care and protect your knives.






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