Clean a Knife




About: One of my favorite hobbies is dismantling electronics, then either combining them together to create something new, or adding components to make them better. I also like gadgets, whether it's taking them apa...

In this instructable, I will show my way of easily cleaning a hunting knife, swiss army knife, whittling knife, etc... Remember to give me a +1!

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Step 1: Long Lasting Blade

First thing, after using a knife and it gets dirty, don't close it (if its a closing knife). The reason is because stuff like dirt, tree sap, what ever is on the blade might get stuck in the base of the knife, dulling the blade every time it is closed. This will assure your knife a long happy life. The picture is of my knife after doing my other instructable, Whittle a Staff / Walking Stick.

Step 2: Hot Water

Turn a tap on hot and wait for it to heat up. Once it is as hot as it gets, place the blade under the water for 30 seconds, rotating it.

Step 3: Electric Tooth Brush

Take an old electric tooth brush, and brush all along the blade, with some pressure. Do the same thing with both sides.

Step 4: Rinse

Rinse the blade the same way you did in step 2, to make sure it's immaculately clean.

Step 5: Dry

Dry the blade with a towel making sure that the sharp edge is facing away from the towel, not towards. Any make SURE that the blade is fully dried.

Step 6: Done.

Your blade should now be as shiny as new! Remember to give this instructable a +1!

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    38 Discussions


    5 years ago

    Dear dirt action Julian so who would clean a knife well any one with common sense and who's mommy and daddy doesn't do everything for them ( no offence)


    7 years ago on Step 6

    This is kind of lame. An -ible on how to cook an egg would make more sense than this.


    7 years ago on Introduction

    I find the finger nail polish remover and a Q-tip work very well for cleaning the blade.


    8 years ago on Step 6

    Running a knife under water and using a toothbrush to scrub it? I'm seriously not trying to be negative, but I expect this kind of common sense information from, not Instructables.

    1 reply

    10 years ago on Step 6

    Nice work dude. You should take some time and apply a quantity of WD-40 or similar oil on the moving parts of the knife (pivots etc.) to make sure no moisture settles in there.

    2 replies

    Reply 10 years ago on Introduction

    And of course, seeing as WD-40 doesn't lubricate, it only displaces water(hence the WaterDisplacement), you'd need to apply a light machine type oil.


    Actually, water displacement is only ONE of WD 40's properties.........Read this from their site.........

    LUBRICATES: WD-40's lubricating ingredients are widely dispersed and tenaciously held to all moving parts.

    Sure, it is only a light lube and no where near as good as machine oil but still, WD40 will do in the field.


    9 years ago on Step 3

     i did this and it worked amazing on tree sap and that green stufff you get on your blade from wittling a fresh cut tree.
     before this i opened up all the tolls on my swiss and put it in the dish washer.


    9 years ago on Introduction

    hey thanks, im sure going to try this method because I got two old knife I found in a park ! yay !

    Thanks for the first part! But do you think that it's ugly because of the flat blade? Believe it or not, a flat blade is far better than a rounded one! It also has a wicked little curved blade on the other side...


    Reply 9 years ago on Introduction

    I have this knife and it is fantastic.  I bought it new at an army/navy surplus store.  My knife has a drop point blade on one side and the other side is a 3/4 serated blade.  The thing has a wicked locking mechanism on it.  I've used this knife for a variety of projects - wood carving, bushcraft, utility projects, work, etc and it has never failed me. 

    Nice tutorial on cleaning!  You can use a little dish detergent to help get those particularly nasty stains and grit off.  Also - after washing any knife you should use a little 3-in-1 for lube.


    Reply 10 years ago on Introduction

    Err.. I just Google imaged "Buck Sekiden", and the first image (also the only image of a Buck Sekiden knife) is the one below that I posted!