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Gerber Applegate Fairbairn modification

kwackster Sep 15, 2015

  1. kwackster

    kwackster Huge member

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    A few weeks ago a knife collector asked me if i could sharpen the false edge on a Gerber Applegate Fairbairn folder.
    On this knife the blade is completely shrouded by the handle when closed, so there is no risk of injury while carrying it.
    The owner also wanted the new bevels to be a bit shiny.

    This older YouTube clip by Nutnfancy showcases this mod:

    [youtube]oR984DMcQ1o[/youtube]

    This was the knife before sharpening:

    [​IMG][​IMG]

    [​IMG][​IMG]

    [​IMG][​IMG]

    [​IMG][​IMG]

    [​IMG][​IMG]

    And the result.
    Ground the new bevels with a Rubber Wheel coated with 230 grit diamond powder, then refined all bevels with a Paper Wheel coated with 15 micron diamond compound, and finally removed the tiny burr remnants with the Tormek leather wheel & some 1 micron diamond compound.
    The edges measure 35 degrees inclusive and are treetopping sharp.

    [​IMG][​IMG]

    [​IMG][​IMG]

    [​IMG][​IMG]

    [​IMG][​IMG]

    The owner is happy with it,

    :grindaxe:
     
  2. waterdogs

    waterdogs Brigade Member Brigade Member

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    Very tacticool ! :thumbsup:
     
  3. diggumsmack2

    diggumsmack2 Level: True Devil

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    That is nice work
     
  4. itadakimasu

    itadakimasu There are no kangaroos in Austria! JDBA Official Member Brigade Member

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    Shiny :devilzeek.
     
  5. mikeymoto

    mikeymoto Don't make me cu..OW! Knife Maker or Craftsman

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    Looks great, nice polished edge.
     
  6. kwackster

    kwackster Huge member

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    Currently busy with the same mod of a (user) Gerber Applegate-Fairbairn folder like the one in my first post.
    This is how the knife looked when i received it from the owner, still with a single edge & an edge angle between 40 and 45 degrees inclusive:

    [​IMG][​IMG][​IMG]

    And this is how the knife looks after grinding the new edge on the back of the blade & trying to match it with the reprofiled edge on the other side.
    The scratch pattern complete with burr remains still present on the apex comes from a Rubber Wheel coated with +/- 170 grit diamond powder & wax (as i haven't made a Paper Wheel with the same diamond powder yet) which i used for this job.

    [​IMG][​IMG]

    [​IMG][​IMG]

    The idea was to make the 2 edges / 4 bevels as visually similar in width & curvature as i could, with a specific edge angle of +/- 35 degrees inclusive, without damaging the names on the blade, and to create a new point that would be centered as much as possible.
    Trying to achieve all these things at the same time freehand, together with many checks with a loupe in between passes isn't easy for me, so i took my time.
    Tomorrow i plan to continue with 15 micron diamond compound on a Paper Wheel for one of those bling & bite finishes, after which i'm going to take a few more pics.
     
  7. kwackster

    kwackster Huge member

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    And the result, after a Paper Wheel with 15 micron diamond compound & deburring with a second Paper Wheel with 0.25 diamond compound.
    Both edges are treetopping sharp.

    [​IMG][​IMG]

    [​IMG][​IMG]

    [​IMG][​IMG]

    [​IMG][​IMG]
     
    desmodus likes this.

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