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Thread: The knife that never needs sharpening

  1. #1
    Join Date
    Dec 2008
    Near Hammonasset Beach, CT

    Exclamation The knife that never needs sharpening


    Saw this in a Cornwell tools magazine at work today. Who wants one! Lol.

  2. #2
    Join Date
    Sep 2006
    San Francisco
    I have a Kyocera ceramic kitchen knife that also claims it doesn't need to be sharpened. I've used it for 3 years now and while it can still cut it's definitely duller than before. They have a crazy high HRC of 90 or something.

  3. #3
    I have several ceramic blades, they do need to be resharpened, and I don't like them... Too light, considering they are SOOO brittle it's no impresive at all...

  4. #4
    Join Date
    Jan 2011
    Canada, Earth
    Ceramic knives are not for me.

  5. #5
    Join Date
    Apr 2007
    central ohio
    they all more or less say that they never need sharpened. i have a ceramic boker knife that was sent to me duller than a butter knife so yes they do go dull. i was able to get a good working edge on it with some diamond disks i have.
    I offer professional knife sharpening 40 years of experience, 22 with the paper wheels. $1. per inch for a v edge, $2 for a convex. I sharpen all edges & "Ti" knives, serrations. plus i do regrinds. Check out my website.

  6. #6
    Oh my! I wish there were such a thing!

  7. #7
    Join Date
    Oct 2002
    Never needs sharpening. That is because they are so freckin brittle that the blade will break before it needs sharpened.
    I am always ready to learn although I do not always like to being taught.
    Winston Churchill

  8. #8
    Join Date
    Aug 2008
    Reno, NV
    Where is a good Ginsu when you need one?

  9. #9
    Join Date
    Oct 2011
    Impossible to sharpen without diamond anyway.

  10. #10

  11. #11
    Quote Originally Posted by manowar669 View Post
    That certainly is a neet idea but for the cost of the replacement blades- you'd be well served learning how to sharpen a knife.

  12. #12
    Join Date
    Dec 2010
    North Eastern PA
    Gotta love adds that you can't believe. Ceramic blades do come sharp but they are so brittle, don't drop it on the floor! The only blade that never needs sharpening is a light saber!

  13. #13
    Join Date
    Nov 2006
    I've stayed away from ceramic blades as most ads I have seen for them states:

    "It is brittle and cannot be used for chopping, cutting bones or frozen foods, or prying..."

    "...blade will break if dropped on a hard surface..."

    That leaves me out. I imagine for kitchen knives this might be ok, but not for one of my edc's. I also don't like to send stuff back unless absolutely necessary - can't see having to send one back for sharpening.

    "I'm normally not a praying man, but if you're up there, please save me Superman" - Homer Simpson

  14. #14
    Join Date
    Nov 2010
    Surrey UK
    Quote Originally Posted by RATlover View Post
    Oh my! I wish there were such a thing!
    There is, just don't use your knife, Renwax and keep it in a drawer and it'll never need sharpening.

  15. #15
    The knife that never needs sharpening is the knife that's never used.

    Baryonyx Knife Co. ~Condors, Moras, Deluxe Tramontinas, and More!

    "To live at all is miracle enough."
    — Mervyn Peake

  16. #16
    Join Date
    Sep 2004
    balto to philly
    In about '98 or so, I thought about trying out a ceramic blade from Boker, but decided against it because of how brittle the blades reportedly can be. And, if course you don't have to sharpen them as often, but eventually they WILL get dull, which means I'd have to buy some completely different sharpening tools just to care for one blade. No thanks.
    formerly known as alex_111
    (August 2000 - September 2004)

    Always looking for Italian stilettos. Send me a PM if you've got one that needs a new home!

  17. #17
    Since it says they never need to be sharpened and you guys' ceramic knives are going dull, can we get a lawsuit for false advertisement going or are you guys over the problem at this point?

  18. #18
    Join Date
    Oct 2010
    New York City
    This thread must have been a bad omen. I've been using a Stone River ceramic blade ti "demascus" folder since NYCKS (about three months). Its been a fine user for me. I've been using it relatively hard and its remained razor sharp. After reading this thread, I went to cut something for my dog and the tip of the blade snapped off. I guess we will learn how good/bad their warranty dept is.

    I have badly taken pics below:

  19. #19
    Join Date
    Oct 2007
    BC, Canada
    I'm a very light user, but I recently picked up a Boker Anti-Grav (2oz) for my new dress knife. Super thin, deep carry clip, carbon fiber handle, and ceramic blade; not bad for $60.

    It came very sharp, and I doubt it will get enough use to ever need sharpening.

    It's very cool, and a total bargain for the materials that you get. But I probably wouldn't use it for EDC.

  20. #20
    Join Date
    Sep 2005
    Quote Originally Posted by drillsgt71 View Post
    Gotta love adds that you can't believe. Ceramic blades do come sharp but they are so brittle, don't drop it on the floor! The only blade that never needs sharpening is a light saber!
    Yeah, but they eventually need to be refocused and we all know what a PITA that is!

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