Breakthrough: How To Sharpen A Knife Without A Sharpener

Survival News

Know how to sharpen a knife without a sharpener? Here are five innovative ways to keep your blades razor-sharp using objects you likely already have in your home or nearby!

RELATED: 5 Tricks For Better Knife Sharpening

In this article:

  1. Knife Sharpening Tips
    1. Bottom of a Mug
    2. Broken Glass Bottle
    3. Slate or Cement
    4. Another Knife
    5. Car Window

5 Ways to Sharpen a Knife with Common Household Items

Knife Sharpening Tips

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 tips on how to sharpen knives at home to make your knives good as new, and best of all, each trick only takes a few seconds.

1. Bottom of a 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.

2. Broken Glass Bottle


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


Forgot to bring your knife sharpening stone kit? 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!

RELATED: How To Sharpen A Knife At Camp [Video]

4. Another Knife


Where can I get my kitchen knives sharpened? 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


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.

Watch this video from Sierra 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 when 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!


For more awesome SHTF survival items, you can’t make at home, check out the Survival Life Store!

Check out 7 Cost-Effective Uses For Shipping Containers Survivalists Should Know at

Follow us on FacebookInstagramTwitterTumblr, and Pinterest!

Breakthrough: How To Sharpen A Knife Without A Sharpener |

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

This article was originally published on Survival Life

Leave a Reply

Your email address will not be published. Required fields are marked *