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Photos CRK Umnumzaan Thumb

Discussion in 'General Knife Discussion' started by DJ&S, Jan 10, 2020.

  1. DJ&S

    DJ&S Gold Member Gold Member

    Dec 31, 2019
    Yep, I've opened that way several times and tried to flick it an equal amount. Now that's it's broken in a bit more both are pretty easy. Those first few days are what gave me the well deserved self inflicted damage to the thumb.
  2. DJ&S

    DJ&S Gold Member Gold Member

    Dec 31, 2019
  3. V-1


    Apr 14, 1999
    I'd say cuts, nicks and scrapes are a part of the hobby.
    DJ&S likes this.
  4. DJ&S

    DJ&S Gold Member Gold Member

    Dec 31, 2019
    Ha yeah I'd say I'm ok with that as a trade off. Slide bite and casing burns never kept me away from guns either.
  5. BD_01


    Jun 9, 2016
    The two times I’ve acquired a new Umnumzaan my thumb has become quite sore.

    This is my (unoriginal) break in routine.

    1. Follow the instructions BB posted above.
    2. Remove the pocket clip (it adds a bit of tension to the lockbar)
    3. A fresh light coat of grease, including the detent ball tract.
    4. Adjust the pivot.
    5. When your thumb hurts, carry another knife for a few days.

    In less than two weeks your Umnumzaan will be transformed from a thenar torture device into the Boss it’s destined to become.

    Then of course you can put the clip back on and add a wisp of purple LokTite to the pivot.

    Last edited: Jan 11, 2020
    jkwithawave and DJ&S like this.
  6. DJ&S

    DJ&S Gold Member Gold Member

    Dec 31, 2019
    Very nice, the tanto version is impressive. Thanks for the input, I wasn't sure if the ceramic ball was supposed to be left dry or it was ok to lube it a bit. Also hadn't considered removing the clip..I appreciate it.
    Last edited: Jan 12, 2020

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