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How to tighten kydex sheath knife retention?

Discussion in 'Sheaths & Such' started by mountainranger, Jun 10, 2018.

  1. mountainranger


    Mar 25, 2010
    Is there a way, using heat, to tighten the knife retention of a kydex sheath? How's it done? I'd like to tighten the kydex sheath of a BRKT Bravo Necker.
  2. duramax

    duramax KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Nov 29, 2012
    I’m no expert, but I’ve had good luck with a heat gun. I just went slow and kinda push molded it by hand.
  3. Maineiac1


    May 3, 2017
    carefully with heat gun and keep moving the heat around in just the area you want to adjust, once soft hold it in place with your hands tightly with gloves and wait till it cools...
  4. Lapedog

    Lapedog Gold Member Gold Member

    Dec 7, 2016
    Put some gloves on your hand because the kydex and knife inside can get quite hot.

    Also be aware that the kydex will go soft very quickly when exposed to heat so heat a tiny bit and check. You don’t want to over heat it as it will essentially become plastic sludge very quickly.

    I used to tighten my kydex by holding it over a lighter (not touching the flame) for just a few seconds and it would go completely soft. Usually I would just heat the part I wanted to pinch very quickly.

    On this sheath I lightly pinched the part in the middle of the handle ring for added retention.

    On this one I did around the heel of the blade. Where my fingers are.

    Most importantly go slow and test a little bit at a time. It is extremely easy to overhear and over pinch.
  5. David Brown

    David Brown Kydex Sheath and Holster Artist :) Moderator Knifemaker / Craftsman / Service Provider

    Jun 4, 2001
    a great video, I have sent to some folks

    buckfynn and Lapedog like this.

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