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Reassembling a knife - order of washer operations?

Discussion in 'Maintenance, Tinkering & Embellishment' started by David Mary, May 26, 2019.

  1. David Mary

    David Mary KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    177
    Jul 23, 2015
    Hobby time question: In knives that use both nylon/teflon and phosphor/bronze washers, I've always wondered if it matters which one is against the tang and which against the liner, and if so why.
     
  2. jpm2

    jpm2

    Nov 19, 2014
    I've never had a knife that used both, wonder what the purpose is?
     
  3. David Mary

    David Mary KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    177
    Jul 23, 2015
    Spyderco does it in the Resilience, Cold Steel does it in the Voyager. Maybe other knives as well. When I first saw it I wondered if it was a way to further reduce friction. Both are pretty slippery materials, as is steel, so I kind of doubt it matters which goes in first, but I have noticed that all units of a certain model are assembled the same way. I seem to have the impression that the synthetic washer is always against the liner and the metal one always against the blade tang. "There must be a reason", or maybe there isn't...
     
  4. soc_monki

    soc_monki

    171
    Apr 5, 2019
    The resilience has both? I'll have to disassemble mine and see. Both my Tenacious and persistence have 2 pb washers (with holes) on each side. Would be interesting if the resilience had 2 different materials.

    I would say pb on blade side, nylon on liner side though.
     
    David Mary likes this.
  5. razor-edge-knives

    razor-edge-knives Moderator Moderator Knifemaker / Craftsman / Service Provider

    Apr 3, 2011
    it doesn't actually really matter which goes against which... either washer will slide against whichever surface has the lowest resistance/coefficient of friction.
     
    David Mary likes this.
  6. jpm2

    jpm2

    Nov 19, 2014
    Are both type washers the same size?
     
  7. Mo2

    Mo2

    Apr 8, 2016
    Put the washer on the scale and put a tiny drop of lube on the top. Spread it along the washer. Avoid it getting under it. Then apply the blade. This will help avoid getting lube all over and attracting dust etc, it will also help keep the washer spinning more than it should.
     
    David Mary likes this.
  8. David Mary

    David Mary KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    177
    Jul 23, 2015
    Diameter, yes, thickness, no. The nylon washers in the Resilience are definitely thicker than the thin bronze washers they are paired with, but the teflon washers in the Voyager are thinner than their bronze counterparts - or at least their flimsiness makes them seem so.
     

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