Head knives

Head knives for cutting & skiving leatherwork.
knoba - head knives

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Made from spalted silver birch, brass & medium carbon steel alloy, mirror polished with beeswax finish.
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Donor steel from old saw blade (old non tct blade). Took 2 teeth off to see if the metal could be hardened.
knoba - head knives

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Heated both teeth to cherry for 3 min, quenched one & left other to cool.
knoba - head knives

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My quenching bucket. Spark tests (grinding) on the 2 teeth gave good results.
knoba - head knives

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Cleaned up both sides with abrasives (flap wheels, silicon carbide discs, etc.).
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Stuck my templates to the blade…
knoba - head knives

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Cut them out with angle grinder.
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Centre marked a sharpening pivot point…
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Drilled that mark…
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Took off paper & made a sharpening jig for the belt sander.
knoba - head knives

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That’s how this is going to go…
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Sharpened & polished.
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Heated to cherry for 3 mins (12mm = 30mins soak time). Had to keep the torch moving to keep the blade hot over its entire surface.
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After quenching the blade but not the tang.
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Re-polished.
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Seasoned birch from my garden…
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Turned some handles for my blades…
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With thanks to Cap’n Eddie Castelin for his superb wood turning videos (link below).
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knoba - head knives

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knoba - head knives

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Machined up some brass ferrules and epoxied on.
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Tangs were tapered (4° included angle) to common machine taper specs (see link below)
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Very pleased with results, they feel great, strop well and hold a good wire!
knoba - head knives

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knoba – Leather Head Knives – xcf files – 2015.zip (link below)
knoba - head knives

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knoba – Leather Head Knives – xcf files – 2015.zip (link below)
knoba - head knives

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You tube – Cap’n Eddie Castelin

knoba – Leather Head Knives – xcf files – 2015.zip

Wiki – Machine taper

Wood Database – Silver birch

Colron – Refined Finishing Wax

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