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Last Resort Knife Sharpening Hack

Easily Sharpen Your Knife Anywhere

I’ve got a real quick knife sharping tip for you. Many times you need to touch up the edge on your knife when you aren’t at home and don’t have quick access to a sharpening stone. In those situations, the rounded edge on a car window can actually do a pretty darn good job. Check it out below:

Easy, Huh?

As you saw in the video, this actually works pretty well. Don’t use this technique on a knife with a big burr or chip in the blade because it could scratch the window. But if the edge is simply dulled and needs some slight honing, this does the trick and it’s a lot better than using a concrete sidewalk (that works too but much riskier for your knife).

I hope you enjoyed the tip! If this helped you, let me know by dropping a comment down below.

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98 thoughts on “Last Resort Knife Sharpening Hack”

  4. Another thing that can be used is the bottom of a coffee cup – not a paper or plastic cup, but stoneware or bone china. Just use a circular motion across the bottom of the cup on each side of the blade.

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    1. That’s an awesome point. Necessity is the mother of invention. When your knife is dull look around. There are so many common items that can be used to hone an edge. I’m going to try the coffee cup later today! I’ve even seen guys hone an edge on the smooth side of a glass cup. More of a polishing than a sharpening but it works. Warning it will scratch up the surface, so don’t try this on your wife’s prized Waterford crystal!!!

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  7. Preciate the tip I have a knife that needs sharpen that video just taught me something new. Thanks a lot,/ Monte Rucker

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  8. Weve all been there, and a dull knife is almost a useless knife. Thanks for the tip. Tought a past Army Ranger somethin new today..

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  12. how can i put a NEW EDGE on the CERAMIC KNIVES?
    THOUGHT were supposed to LIFETIME Sharp – have several that SMUCH instead of Cutting Tomatos etc.

    thx

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  14. I learned this sharpening “trick” while in the Boy Scouts. Our Scout Master was a pre-WWII grad of Hudson High, and he knew all sorts of neat tricks for just about anything you can think of.

    Here’s another: You can sharpen any sort of scissors, with the exception of your wife’s pinking shears, by simply cutting up some aluminum foil.

    Yes.

    Aluminum foil. Try it. It works.

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  18. I suppose that it would be typical of an ex British Army Sgt who is prone to dry cynicism, to point out that it would be far more efficient and effective to get into the car, drive into town and buy an oil stone.

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  19. Cool trick/ tip. I always take very good care of my knives, but, once in a while, I find I’ve neglected 1 for too long and it’s always hunting, fishing, or camping when I do. Thanks.

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  21. Cool, I have not seen that before. I knew of ceramics, and this is exactly what ceramics does. Thank you!

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  22. Being in my mid- 70s , didn’t always have modern methods of sharpening knives… Used glass coke bottles and mason jars. Top of the lip on the mason jar excellent for honing and the coke bottle body used for removal of small burs. Sometimes used the lip of an old tin can for the removal of burs. Also, the coke bottle sharpened scissors by placing the blades in the notch just below the top and drawing them back with a slight squeezing motion. always kept 2 jars and a bottle with a cork stopper in my knapsack for snacks and drinking water whenever out hunting. The knapsack/Hunting pack was also useful for carrying small game.. after- thought —– didn’t need bug out bags back then….

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  23. In my 3o yrs. in the pipe trades I always kept a keen edge on my knife using a welding rod, the flux coating the different grades of rod did a nice job of keeping the blade sharp.

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  30. Sweet. I showed this trick to my grand kids and showed them how to sharpen on a hard rock if you have no windows handy. Worked great!

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  31. A great tip for honing! Here’s another VERY old tip for getting an excellent edge on a steel knife – which my grandfather showed me when I was a boy – and I’m now 80 years of age! – simple use the back of another knife as though it was a knife-sharpening steel. This
    temporary sharpening trick is amazing – and dare I say it – it might be even better than using the rolled edge of your car window! (Which I am yet to try!)
    But the point is, as you correctly said in the article, MUCH better than the risky way of getting an edge by using the concrete side-walk!

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  32. Kozmo – CO
    after the blade is razor sharp, you can strop the blade with a leather strip, or even on your jeans. Be careful not to snap the back of the tip on you pants!

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  33. Another trick for sharpening a knife: do the same thing with 2 knives to each other; either toward you or away from you. I learned that from my husband after he had gone to cooking school. Similar to using a sharpening steel.

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  34. Clever idea, I would not have thought of it. I have used the back ring of diner plates to sharpen my knives. Try it and you will see.

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  37. My forte in life is metal. To make a cheap blade good. Use a baked potato wrapped in aluminum foil, shiny side in, just removed from oven, have cheap steel sharpened to desired sharpness, stick blade in to hilt into baked potato and potato will temper blade making it good steel. Email me to find out how to make good steel great. Coke or any glass bottle helps hone blades too.

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  41. Nice I have a couple of cars which means I have a lot of windows to sharpen my TRS 325S on. thanks

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  44. WOW! THANK YOU!! I LOVE IT WHEN THIS OLD EAGLE SCOUT GETS TO KEEP LEARNING PRACTICAL, USEFUL AND WELL PRESENTED INFORMATION.

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  46. Did not know this but is very nice trick to know how to sharpen your knife in the field in a pinch I tried it and it works very well

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  47. His comment about putting a curl on the blade edge That applies to any type of sharpening tool. Whether it be a sharpening stone. A hand held draw thru kitchen knife sharpener. Even a diamond dust sharpening stone. To get rid of the curl on the edge out the blade is not that hard. U have to know what you’re doing and be smarter than what you’re doing. It’s not complicated. So why make it that way. The best thing to do is just go buy a small folding extra fine diamond flake stone and put it in your glove box/center console. Those are the best sharpening stones there is if u want a razor sharp edge. If you’re serious about your knives, do it the right way it don’t do it at all. A DULL KNIFE WILL ONLY GET U HURT!!!!!!! SOMETIMES VERY BADLY HURT. If you’re not serious about em, don’t even mess with em. Knives are tools. Take care of em right and they’ll take care of u right. PERIOD!!!!!!!!!!!!!!!!!

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