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Kukuri failure.... It broke...

Discussion in 'Non-Firearm Weapons' started by Dontkillbill, Mar 30, 2013.

  1. Dontkillbill

    Dontkillbill Well-Known Member

    Here is a video of me with my Kukuri. The damn thing broke

    I was not impressed but the knife was replaced and the replacement is in "testing"

  2. JShirley

    JShirley Administrator Staff Member

    Sorry. Guessing it wasn't a Himalayan Imports...
  3. USAF_Vet

    USAF_Vet Well-Known Member

    Watched the video and for some odd reason I have a hankering for some bacon.
  4. hso

    hso Moderator Staff Member

    Where'd you buy it?

    Who was the manufacturer?

    Common problem to improperly heat treated big knife that was over hardened or was two pieces of metal joined together at the guard.
  5. JShirley

    JShirley Administrator Staff Member

    It would be a lot easier if you included some substantive text, rather than just two or three short sentences, and a link to a video.

    I almost never follow any video links, and some members are unable to for work or bandwidth reasons.
  6. Slamfire

    Slamfire Well-Known Member

    Well it looks to be a Nepalese khukuri, it did break in the tang, and that is most unfortunate.

    I don’t know why, either defective steel or the tang was overheated and the steel was burnt. These things are made over charcoal fires, the makers use scrap steel, don’t have pyrometers, the process controls are taste, smell, touch, visual.

    This is always a risk with “handmade”. Quality varies quite a bit. You are lucky you were not injured.

    I purchased a number of khukuris over the years, I take them out and wack them against wood to test integrity. For a good number the handles became loose. The glues the Nepalese use are inadequate, I call it a glue, but the stuff was dried tree sap. I removed the cap ends, boiled the glues out of the handles, pored in modern two part epoxies, let dry, install cap, and the handles have stayed put.
  7. JShirley

    JShirley Administrator Staff Member

    HI usually uses truck leaf springs, which are 5160- great for large knives.
  8. DDeegs

    DDeegs Well-Known Member

    I have an Atlanta cutlery kukri that I got about 20 years ago, for about $19.00, I've beat the snot out of it and no worries so far. Sheath leaves something to be desired but the knife is solid and I would/have used it in place of a hatchet.

  9. Sam Cade

    Sam Cade Member

    TTBOMK, that is exactly correct.

    Laha=Refined tree sap.
  10. Dave Rishar

    Dave Rishar Well-Known Member

    This was a tang failure, not a glue failure. Laha was not at fault here.

    Freeze the video at 0:04. The ricasso area is scribed with OKACG or OKAGG - it's hard to make out with the poor video quality and lack of focus, but that's what I see. I'm not familiar with that mark. Anyone seen it before?

    EDIT: And this was a very serious failure. Someone could have been killed. I hope that whomever made this khukuri understands the gravity of the situation.
  11. JShirley

    JShirley Administrator Staff Member


    Great to see you.

    Guys, Dave has done more cutting with large knives than I have.
  12. Dontkillbill

    Dontkillbill Well-Known Member

    It was a terrible tang failure. The replacement blade is being tested and not going to be trusted for awhile. After taking it down further it is a tempering issue. The blade and tang was hardened and the tange and the back of the blade should have been a lot less hard/brittle. The labeling is GK&CO the blade was replaced when I first received it as the blade was cracked at the spine I hoped it could still be used but was wrong.

    This knife is suppose to be 5160 as well, however its what part of the blade is hard and what is left with springyness that makes or in this case breaks a blade.

    Hope everyone enjoyed Easter :)
  13. hso

    hso Moderator Staff Member

    Makes perfect sense.
  14. JShirley

    JShirley Administrator Staff Member

  15. Slamfire

    Slamfire Well-Known Member

    I have seen videos of kami's cutting leaf springs to use. But, suspension manufacturer’s are under no obligation to guarantee nor warranty to kami’s that their leaf springs will always be made from 5160. Suspension manufacturers are free to buy whatever lot of steel meets their needs and is the lowest cost for that day. Typically they buy in the lot size that the steel mill produces and they buy from trusted makers, but what they use is their business and no one else’s. Since the kami’s are lucky to have electricity, it is reasonable to assume they don’t have the arc blast test equipment to test steel for composition.
  16. JShirley

    JShirley Administrator Staff Member

    I'm guessing that Mercedes doesn't change their leaf spring steel very frequently. :cool:
  17. Fiv3r

    Fiv3r Well-Known Member

    The last time I inquired to Yangdu, HI was still very picky about what kind of steel they used. The Maoists cracking down on the country have made it a little more difficult to get the most choice of choice, but the kamis know what kind of steel makes a good knife.

    I think the truck springs reasoning is that they are already leaf in shape that is of a quality steel and easier to forge than a blob or hunk of random metal.
  18. rondog

    rondog Well-Known Member

    I have a gigantic kukri that I bought from a local guy for $40, has the massive sheath, smaller knife and steel. I have no idea where it came from or who made it, but it's huge and heavy, and scary sharp. Wish one of you experts was in Denver and could tell me if it's decent quality or just a tourist souvenier.
  19. Sam Cade

    Sam Cade Member

    You could do a vinegar soak to check for a temper line.
    Last edited: Apr 10, 2013
  20. JShirley

    JShirley Administrator Staff Member

    Or, start a thread here with pics. Or join Bladeforums.com, and start a thread in the Himalayan Imports sections.

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