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Question about Folders

Discussion in 'KA-BAR Knives' started by GeofS, Feb 10, 2019.

  1. GeofS

    GeofS Gold Member Gold Member

    Mar 9, 2018
    Does anyone know if these two use celluloid?

    [​IMG]

    Thanks! :)
     
  2. 1066vik

    1066vik Gold Member Gold Member

    Nov 28, 2009
    my guess is delrin - but that's all it is, a guess.
     
    GeofS likes this.
  3. GeofS

    GeofS Gold Member Gold Member

    Mar 9, 2018
    I hope you’re right. I was reading about celluloid degradation in knife handles. What a nightmare.
     
  4. 1066vik

    1066vik Gold Member Gold Member

    Nov 28, 2009
    yeah - when it goes, it's a mess and can damage other steel objects stored with it.
     
  5. zzyzzogeton

    zzyzzogeton Gold Member Gold Member

    Feb 17, 2013
    If either of them have model numbers on them, then it/they are definitely Delrin, as model numbers on the blades would not have happened until after 1966.
     
    Xr6x likes this.
  6. GeofS

    GeofS Gold Member Gold Member

    Mar 9, 2018
    No, they do not have model numbers on them.
     
  7. zzyzzogeton

    zzyzzogeton Gold Member Gold Member

    Feb 17, 2013
    With no model numbers, we have narrowed the time frame to 1952ish, when the stamp went to UC/LC Italics, and 1966, the end of the no model number era.

    The earliest date that a knife can have Delrin is 1961, when Dupont first made it in commercial quantities. So time to do a celluloid test. One such test is to take one of the knives (closed of course) and briskly rub it between your hands to warm it up. If you can smell camphor coming off it, it is celluloid. Wash your hands between knives to prevent a false signal. Presence or absence of camphor will indicate which time period each is from.
     
    Xr6x and Revhardheaded like this.
  8. David Nowlin

    David Nowlin Gold Member Gold Member

    911
    Jan 17, 2018
    Interesting. I can hardly wait for the results! :thumbsup::thumbsup:
    DN
     
  9. GeofS

    GeofS Gold Member Gold Member

    Mar 9, 2018
    Thanks for the tip, I’ll try it when I get home. :thumbsup:
     
    Xr6x likes this.

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