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Cracked blade?

Discussion in 'Chris Reeve Knives' started by Ironbut, Dec 11, 2017.

  1. Ironbut

    Ironbut Gold Member Gold Member

    Mar 1, 2016
    7A1437D2-887F-45D4-95FE-1BCE7047A0F3.jpeg C1518E16-2F9B-4485-AE73-E9C8EC93CC7A.jpeg Anybody ever have this happen? My blade is cracked behind the thumb stud. It’s barely visible, but goes the whole way through & you can just feel it when you run a fingernail over it. I just noticed it yesterday & I shot an email to the mother ship, but they don’t have business hours on weekends.
     
  2. Lapedog

    Lapedog

    Dec 7, 2016
    Never seen this before or even heard of it. How bizzare. One has to wonder how long it has been like that undetected?
     
  3. Ironbut

    Ironbut Gold Member Gold Member

    Mar 1, 2016
    I know! I was switching out my Inkozi for this one yesterday & I tried to wipe what I thought was a piece of lint or hair off the blade. Only it wasn't lint, and it was on both sides. Like the thumb stud was too big for the hole or something & cracked the blade. But why hasn't anyone else's cracked? Weird!
     
  4. Steel_Addiction

    Steel_Addiction Gold Member Gold Member

    Jun 10, 2011
    Heard of it, Yes
    Seen it, No

    It is entirely possible, as the thumbstuds are friction fit, so they are slightly oversized to the hole they need to go in.

    I believe this is one of the main reasons behind not being able to get new thumbstuds in discontinued blades, such as regulars, as it risks the possibility of cracking the blade.
     
    Thin-Slice likes this.
  5. Josh K

    Josh K Platinum Member Platinum Member

    Sep 29, 2008
    I've seen one or two threads about this happening. It seems very rare and CRK replaced the blade.
     
    Mo2 and HST like this.
  6. Birdhunter1220

    Birdhunter1220

    Aug 3, 2011
    I had it happen once on a BG-42 serrated blade. It was old 97 if I remember right. CRK replaced it very fast. You will have no problem if you send it back I am sure.
     
  7. Ironbut

    Ironbut Gold Member Gold Member

    Mar 1, 2016
    OK, glad to see I'm not the only one this has happened to. I've had the knife for almost two years & I think the crack just appeared in the last two or three months, because that's when I got my Inkozi & put this one in the gun safe for a well deserved rest. If it was there before I'm pretty sure I would've noticed it when I wiped it down with oil before putting it away.

    I'll just wait for instructions from Idaho now.
     
    HST likes this.
  8. Peter Hartwig

    Peter Hartwig Gold Member Gold Member

    Feb 29, 2008
    Not had it happen with CRK, but with other brands. If a blade is going to crack it is the likely spot to do it.
    I have had 2(again other brands ) land up with cracked blades(at the stud) after shipping to the new owner. I certainly didn't notice either before selling and have to wonder if it could have to do with temp change on the flight-or course it could be I just need better glasses:) One was a sell back to the original owner and I had just had a couple weeks and never used or carried.
     
  9. JenWrath

    JenWrath

    29
    Aug 30, 2016
    Seen it on a very heavily used Large 21. The owner wasn't even aware it was cracked until I pointed it out - he wasn't sure if it had come that way, formed later or how it happened. z

    Definitely a very rare occurrence on a CRK of course. Usually I only see/hear about it when a new model and usually new steel to a company is first being run.
     
  10. mlamb

    mlamb Gold Member Gold Member

    210
    Feb 12, 2006
    First time I've seen it.
     
  11. Ironbut

    Ironbut Gold Member Gold Member

    Mar 1, 2016
    I filled out a Service form on CRK website & uploaded pics. Customer Service replied saying that it certainly appears to be a warranty issue, so I'll get it in the mail tomorrow. I'm glad I picked up the Inkozi a few months ago, so I'll have one to carry until the 25 gets back. I have "several" very nice knives that I can carry, but the CRKs just feel right.
     
  12. slamer

    slamer

    82
    Mar 26, 2001
    Wow,
    Thanks for showing me the problem..
    Had to look close at my Inkoski.
    All good...
     
  13. DavidABQ

    DavidABQ

    21
    Jul 31, 2017
    I am sorry this happensd to you but it makes me feel better about EDCing a Mnandi.

    No thumbstud.
     
  14. hermit dave

    hermit dave Gold Member Gold Member

    639
    Jul 19, 2011
    That is an interference fit thumb stud. If the hole is to big it falls out, too small and you get a through fracture.
     
  15. blanco112

    blanco112 Gold Member Gold Member

    520
    Nov 1, 2016
    Happens infrequently, but more than you think. Shows up once a month or two on the Facebook page with similar issues. But they take care of it via warranty.
     
    bhyde likes this.
  16. mlamb

    mlamb Gold Member Gold Member

    210
    Feb 12, 2006
    I'm wondering if a heat treat issue? or just a stress fracture.
     
  17. Peter Hartwig

    Peter Hartwig Gold Member Gold Member

    Feb 29, 2008
    Heat treat is certainly a possible cause, but I would think it could also happen when putting in the thumb studs. If I remember correctly they won't replace thumb studs on the regulars-in case they are damaged they can't replace the blade.
     
  18. jumpstat

    jumpstat

    236
    Mar 9, 2007
    Thanks for sharing.

    I am looking at my 21L and the area is so minute that, one can bypass if there is a crack in that region. I can't really remember how many times my folder has dropped and hit hard surfaces but so far apart from snail trails, no big issues.
     
  19. bhyde

    bhyde UNNECESSARY EVIL Staff Member Super Mod Moderator Platinum Member

    Mar 19, 2002
    Possible I think..but also may have something to do with a tenth of a thousandth or two more on the diameter of the thumbstud than needed or maybe even a bit of axial misalignment when being pressed in. Probably a bunch of factors..but as @blanco112 said, it comes up about 1x a month on FB and I am sure a few other places.
    CRK will take care of business though :)
     
  20. Ironbut

    Ironbut Gold Member Gold Member

    Mar 1, 2016
    I've only been on the CRK Facebook page for about a month, so this was the first I've ever heard of it happening. As I mentioned before, I'm fairly certain that the blade wasn't cracked when I put it away a couple months ago. I normally wipe the blade down & oil the pivot at least once a week on my carry knife, and I would've seen it. I can understand a stress crack from the thumb stud being pressed in, but I would think it would've shown up long before now. Damned if I know! Maybe the good folks in Boise can tell me after they get it. Until then, I'm carrying my Inkozi again & I'll keep checking it for cracks.
     

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