Breakthrough: How To Sharpen A Knife Without A Sharpener

Know how to sharpen a knife without a sharpener? You might not have one in a survival situation, so finding other ways to sharpen knives is an essential survival skill. If you have an old coffee mug or a broken glass laying around, chances are you won't even need an expensive sharpener. We found a few easy knife-sharpening tricks and tips to make your knives good as new, and best of all, each trick only takes a few seconds. Here are 5 innovative ways to keep your blades razor-sharp using objects you likely already have in your home or nearby!

5 Ways to Sharpen a Knife with Common Household Items

1. Bottom of a Mug

Bottom of a Mug Photo by Oh My Mug

No knife sharpener? No problem. Find a ceramic coffee mug with a rough surface on the bottom. Hold the knife at a 20-degree angle, and rub the blade against the bottom of the mug. Your dull blade will be sharpened in no time.

Before we get any further, consider these 5 Tricks For Better Knife Sharpening and sharpen your knife perfectly, whatever tool you're using to sharpen your knife.

2. Broken Glass Bottle

Broken Glass Bottle | Breakthrough: How To Sharpen A Knife Without A Sharpener
Broken Glass Bottle Photo by Induced

Any glass edge will work for this one! Hold your knife at a slight angle against the edge of your broken glass, then swipe it in the same direction a few times. It's surprisingly easy and a great way to sharpen a knife quickly.

3. Slate or Cement

Slate or Cement | Breakthrough: How To Sharpen A Knife Without A Sharpener
Slate or Cement Photo by Total Survival

This is a great option if you're outdoors and have access to slate or concrete. Find a flat surface and wipe your blade back and forth a few times. Try this survival skill the next time you're camping!

4. Another Knife

Another Knife | Breakthrough: How To Sharpen A Knife Without A Sharpener
Another Knife Photo by Printovete

A pretty obvious idea, but a great one nonetheless! It turns out that you can use another knife as a sharpener for a dull knife. Well, we've seen this one too many times in some cooking shows and butcher shops, so you probably get the idea. Learn how to sharpen a kitchen knife with another knife safely, though.

5. Car Window

Car Window | Breakthrough: How To Sharpen A Knife Without A Sharpener
Car Window Photo by Off Grid Web

If you are out car camping, you can head straight to your can window if you can't find any of the household items listed here within your reach. The idea is to use the uncoated part of your car window, like you would on a broken glass bottle.

You might also want to check out: How to Sharpen a Knife at Camp!

Check out the #1 Tactical Folding Knife In The World

Watch this video from Sierra Trading Post for the detailed tips and tricks to sharpening your knife using everyday household items:

There's nothing worse than a dull knife. In fact, a dull knife is actually MORE dangerous than a sharp knife. If you've ever tried to cut an onion with a blunt blade, you know how risky it is: the build-up of force can lead to a deadly slip. It's important to take care of our survival tools, but you don't always have the right tools nearby. Eventually, you'll need to know how to sharpen a knife even if you don't have your trusty sharpener within reach. Anyone of these ways to sharpen a knife using ordinary objects will do the trick!

Do you have tricks of your own up your sleeves to sharpen knives? You can share it in the comments section below!

Up Next: Emergency Survival Kit From Everyday Household Items

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Editor’s Note: This post was originally published on February 8, 2017, and has been updated for quality and relevancy.

Breakthrough: How to Sharpen a Knife Without a Sharpener

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