Sharpening a Fallkniven F4

[YoungGun]

Ladies and Gents,

I have taken a few nicks out of the above knife going through sternums in a rush.

Any tips on getting theses out ?

I have the usual collect of stones and steels, but a bit scared of this blade as it is not the Mora's/victorinox I normally do.

Best,

Mike

 

[sh1kar]

Buy a Lansky set and stop trying to cut bone with a knife. Buy a small field saw

S

 

[deerstalker.308]

If it’s convex ground don’t try using a lansky, you’ll need to do it on a stone

 

[zimtrout]

There are a few on here who offer a sharpening service???

 

[baguio]

Buy a large field saw. What's the point in getting a small one? You save about 5 grams in weight and they're useless on anything bigger than a roe. Buy once, cry once!

 

[YoungGun]

If it’s convex ground don’t try using a lansky, you’ll need to do it on a stone

What is the difference (pardon my ignorance) ?

 

[YoungGun]

Buy a large field saw. What's the point in getting a small one? You save about 5 grams in weight and they're useless on anything bigger than a roe. Buy once, cry once!

Hi Baguio, can you recommend a saw? I have larder saws, but don't fancy carrying that around

 

[Bandooki]

Casström No.11 Field Saw - Hunting Saw with orange handle

Opens the chest cage and pelvic bone on large game without puncturing the gut or causing other unintended damage. It can even be used as a saw to clear branches

casstrom.co.uk

Use this, they also do a smaller one
As far as the Falk use stones and strop

 

[baguio]

Casstrom No.11 field saw as above. Will do what you need with ease and they have fixed the old fault where the blade used to break.

 

[Selous]

The Lansky sharpeners work to a fixed angle so basically create a flat bevel on each side. The Fallkniven have a convex grind that is best managed using diamond stones and a strop. I was in a similar position with a Fallkniven PHK and sent it to @Longstrider here on SD for sharpening. I cannot recommend his services highly enough as it came back razor sharp. I now just maintain the edge with a leather strop and Smurf poo compound at his suggestion which keeps the edge nice.

 

[Feugh]

What is the difference (pardon my ignorance) ?

 

[Utectok]

The Lansky sharpeners work to a fixed angle so basically create a flat bevel on each side. The Fallkniven have a convex grind that is best managed using diamond stones and a strop. I was in a similar position with a Fallkniven PHK and sent it to @Longstrider here on SD for sharpening. I cannot recommend his services highly enough as it came back razor sharp. I now just maintain the edge with a leather strop and Smurf poo compound at his suggestion which keeps the edge nice.

I’m not sure I agree with this most knives concave convex or flat ground have a small flat grind final cutting edge. I use 25 degrees and a couple of different diamond stones or lansky sharpeners. On hollow ground, scandi and or flat ground knives

 

[Utectok]

A Japanese folding pocket saw is handy for bones or branches in shooting lanes. Axminster one is good.

 

[Selous]

I’m not sure I agree with this most knives concave convex or flat ground have a small flat grind final cutting edge. I use 25 degrees and a couple of different diamond stones or lansky sharpeners. On hollow ground, scandi and or flat ground knives

Others will know more about this than me but I cannot see a secondary bevel on my Fallkniven and using a flat fixed angle sharpener like a Lansky seems contrary to the notion of a convex grind

 

[Utectok]

Others will know more about this than me but I cannot see a secondary bevel on my Fallkniven and using a flat fixed angle sharpener like a Lansky seems contrary to the notion of a convex grind

You can sharpen flat grind at the angle of the blade but the resulting edge is too fine to be useful. The blade is profiled to give a fine edge to sharpen which is usually done between 30-20 degrees. This sharpening part of the blade is very small and often less than a mm.

 

[Utectok]

Shitty sketch but this explains the principle

 

[deerstalker.308]

Shitty sketch but this explains the principle View attachment 229599

So you’re suggesting adding a micro bevel to every blade regardless of its intended design…. This is fine, entirely up to you but makes a mockery of the intended design of the blade with the grind it was given. Structurally they all offer different benefits, doing this to them kinda undoes that!

 

[Utectok]

So you’re suggesting adding a micro bevel to every blade regardless of its intended design…. This is fine, entirely up to you but makes a mockery of the intended design of the blade with the grind it was given. Structurally they all offer different benefits, doing this to them kinda undoes that!

This is not my idea it’s how nearly all knives are sharpened. This is because to shallow an angle results in an edge that won’t hold for practical use. The grind profiles of the blade provide an edge to sharpen. All knives work this way. Chisels and planes do not but that’s a specialist application.

 

[Utectok]

Sometimes you almost can’t see the second sharpening angle if it’s a fine blade. And some scandi blades are sharpened initially at the grind angle as it’s already very close to the 20-30 degrees of a normal sharpen bevel. But you have to remove a lot of metal to sharpen it compared to a flat grind or hollow ground knife.
Its fine if you don’t believe me I have only been making knives on and off for 40 years so I could be wrong ?

 

[deerstalker.308]

This is not my idea it’s how nearly all knives are sharpened. This is because to shallow an angle results in an edge that won’t hold for practical use. The grind profiles of the blade provide an edge to sharpen. All knives work this way. Chisels and planes do not but that’s a specialist application.

But this is categorically not how fallkniven convex ground blades are, and certainly not how they are intended.