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2 Swedish Air Force survival knives

kwackster Feb 18, 2021

  1. kwackster

    kwackster Huge member

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    Recently acquired these two fixed blades made by Swedish manufacturer Pontus Holmberg.
    According to this website the model was once used as a survival knife for the Swedish Air Force: http://www.gotavapen.se/gota/artikla.../1survival.htm

    [​IMG] upload_2021-2-18_15-47-20.gif [​IMG] upload_2021-2-18_15-47-20.gif

    I'm in the process of giving each one a bit of TLC, and will post some pics later on.
     
  2. snache

    snache Should be a custom title here

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    That makes sense, they look similar to WW II US knives of those type.
     
  3. kwackster

    kwackster Huge member

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    Blade hand reground to it's original full convex blade shape on a Foss 7205 black/green silicon carbide stone used with oil, then refined on 400 grit and 1000 grit SiC wet & dry paper used with oil on glass, and the tiny burr stropped off on hard cardboard with 1.0 micron diamond paste.
    The new apex measures between 20 and 22,5 degrees inclusive.
    Very hard (guesstimate 64-65 HRC) and also very wear resistant steel.
    Handle reassembled, now with all washers glued and pommel repolished, then treated to a few coats of warm Granger's wax.
    Sheath waxed and hand restitched.

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    Rio and snache like this.
  4. Rio

    Rio Como un angel JDBA Official Member Knife Maker or Craftsman Brigade Member

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    nice work.
     
  5. kwackster

    kwackster Huge member

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    The second knife is a bit worse, also due to the handle's leather midsection which had rotted over time together with a pommel stuck in place.

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  6. kwackster

    kwackster Huge member

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    Both Pontus Holmberg knives are made from iron ore from the Dannemora mine, which resulted in very pure steel due to it being rich in manganese.
    In earlier centuries it was known as "oregrounds iron": https://en.wikipedia.org/wiki/Oregrounds_iron
    However i don't know if that name was still being used by the time these knives were made in the late '40's or early '50's of the 20th century.

    Sheffield also used a lot of this same ore to make their famous crucible cast steel from ~1740 up until ~1960.
    These two Swedish knives however are noticeably harder as well as much more wear resistant when compared to the vintage English crucible steel knives that i've hand reground/sharpened over the years.
     
  7. kwackster

    kwackster Huge member

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    Currently busy with making a new leather midsection for the handle of knife # 2:

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    seandavid55 and snache like this.
  8. kwackster

    kwackster Huge member

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    The new leather midsection after rough machine sanding with a cheap Parkside linisher (which i modified so it can do slack belt sanding):

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    BowtownBlade likes this.
  9. BowtownBlade

    BowtownBlade Brigade Member Brigade Member

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    Nice work !!
     
  10. spookyse7en

    spookyse7en Huge member

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    That's dope!
     
  11. kwackster

    kwackster Huge member

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    Busy fine sanding the handle surface:

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    Rio and BowtownBlade like this.
  12. kwackster

    kwackster Huge member

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    The blade has been hand reground on the Foss 7205 combination stone (burr is partly visible), and a few refining steps on wet & dry SiC paper will follow later.
    Now regrinding the swedge with 300 and 600 grit diamond files.

    [​IMG]
     
    Rio likes this.
  13. Rio

    Rio Como un angel JDBA Official Member Knife Maker or Craftsman Brigade Member

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    Really cool.
     

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