Can the CPK K20, when used with proper chopping angles, chop through large pig bones without chipping, rolling, or developing a white line on the edge

[未知艺术家]

I’ve used a modified FR28 with a reduced edge angle to chop pig trotters and large pig bones. Since the FR28 is also made of 3V steel, and even after the modification the edge angle remained quite large (around 45 degrees) with a thick bevel behind the edge, it was able to chop bones and coconuts without any edge damage. Now I'm curious whether the thinner V-ground edge on the K20 can also handle bone chopping without damaging the edge.I’d appreciate it if anyone with real-world experience could share their insights. Thanks!

 

[toker]

If someone brings pig bones and coconuts to the Outlaw Cut and lets me use their K20, I'm your Huckleberry.

 

[on_the_edge]

I’ve used a modified FR28 with a reduced edge angle to chop pig trotters and large pig bones. Since the FR28 is also made of 3V steel, and even after the modification the edge angle remained quite large (around 45 degrees) with a thick bevel behind the edge, it was able to chop bones and coconuts without any edge damage. Now I'm curious whether the thinner V-ground edge on the K20 can also handle bone chopping without damaging the edge.I’d appreciate it if anyone with real-world experience could share their insights. Thanks!

Why don't you try it yourself?

 

[toker]

Why don't you try it yourself?

I don't think they own a K20.

 

[DrBC]

Now I'm curious whether the thinner V-ground edge on the K20 can also handle bone chopping without damaging the edge. I’d appreciate it if anyone with real-world experience could share their insights. Thanks!

I haven't used a K20 on bone before, but did abuse the hell out of one when I first got it. It was battoned through a gnarly Y shaped knot/log without any damage to the blade or edge. Also don't use a K20 like shown, this was excessively stupid But I would wager it would glide through a coconut with no problem. My guess is, it would take a very thick/dense bone to slightly damaging the edge, and even then, probably not much.

I've hit a rock embedded in a tree with a behemoth before while using a full swing and it only caused a tiny chip that didn't go even half way up the edge bevel. I've also hit some very large bolts directly head on at funky angles (by accident) with my K18, again with no damage that went above the edge bevel.

 

[未知艺术家]

Why don't you try it yourself?

don’t know how long it will take for it to be available in my country. If I had it, I would definitely try it myself instead of asking you.

 

[未知艺术家]

如果有人带着猪骨头和椰子来到 Outlaw Cut 并让我使用他们的 K20，那我就是你的哈克贝利。

 

[未知艺术家]

我以前没用K20砍过骨头，但刚拿到的时候确实狠狠地用了一把。它砍断了一个粗糙的Y形木节/木头，刀刃和刀刃都毫发无损。另外，千万别像图中这样用K20，这太蠢了。：竖起大拇指： 不过我敢打赌，它砍断椰子应该没问题。我猜，只有非常厚/密的骨头才会对刀刃造成轻微的损伤，即使这样，可能也不会太严重。

我以前用一把巨型斧子全力挥动，击中了嵌在树上的一块石头，结果只留下了很小的缺口，甚至不到刀刃斜面一半的高度。我还用我的K18以奇怪的角度（不小心）直接击中了一些非常大的螺栓，同样没有造成超过刀刃斜面的损坏。

我以前没用K20砍过骨头，但刚拿到的时候确实狠狠地用了一把。它砍断了一个粗糙的Y形木节/木头，刀刃和刀刃都毫发无损。另外，千万别像图中这样用K20，这太蠢了。：竖起大拇指： 不过我敢打赌，它砍断椰子应该没问题。我猜，只有非常厚/密的骨头才会对刀刃造成轻微的损伤，即使这样，可能也不会太严重。

我以前用一把巨型斧子全力挥动，击中了嵌在树上的一块石头，结果只留下了很小的缺口，甚至不到刀刃斜面一半的高度。我还用我的K18以奇怪的角度（不小心）直接击中了一些非常大的螺栓，同样没有造成超过刀刃斜面的损坏。

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View attachment 2923117	View attachment 2923118
View attachment 2923119	我以前没有用 K20 砍过骨头，但第一次拿到它时，我确实用它砍得很厉害。它穿过了一个粗糙的 Y 形结/圆木，而刀刃和刀刃都没有任何损坏。另外，不要像图中这样使用 K20，这太愚蠢了。：竖起大拇指：但我敢打赌，它砍断椰子也没问题。我的猜测是，只有非常厚/密的骨头才会轻微损坏刀刃，即使那样，可能也不会严重。 我以前用一把庞然大物全力挥动时击中了一块嵌在树上的石头，只造成了很小的缺口，甚至没有达到刀刃斜面的一半。我还用我的 K18 以奇怪的角度（意外）直接击中了一些非常大的螺栓，同样没有超过刀刃斜面的损坏。 View attachment 2923117 View attachment 2923118 View attachment 2923119 View attachment 2923120

I haven't used a K20 on bone before, but did abuse the hell out of one when I first got it. It was battoned through a gnarly Y shaped knot/log without any damage to the blade or edge. Also don't use a K20 like shown, this was excessively stupid But I would wager it would glide through a coconut with no problem. My guess is, it would take a very thick/dense bone to slightly damaging the edge, and even then, probably not much.

I've hit a rock embedded in a tree with a behemoth before while using a full swing and it only caused a tiny chip that didn't go even half way up the edge bevel. I've also hit some very large bolts directly head on at funky angles (by accident) with my K18, again with no damage that went above the edge bevel.

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Your reply was very helpful to me. Thank you so much!

 

[Nathan the Machinist]

I’ve used a modified FR28 with a reduced edge angle to chop pig trotters and large pig bones. Since the FR28 is also made of 3V steel, and even after the modification the edge angle remained quite large (around 45 degrees) with a thick bevel behind the edge, it was able to chop bones and coconuts without any edge damage. Now I'm curious whether the thinner V-ground edge on the K20 can also handle bone chopping without damaging the edge.I’d appreciate it if anyone with real-world experience could share their insights. Thanks!

Green bone and dry bone are different.

I've never cut up a pig.

I used a K20 to disassemble a cow without problem.

Head:

Leg:


The wakizashi is a weapon that is intended to be able to cut through bone. I'm confident anyone here could take an arm with a single hit because it removed a bovine "arm" rather easily. Someone like Dan or Ben might even be able to cut a person in half with one.

Dry pig bone might be a different story, I'm not familiar with it. The wakizashi is not a "hard use" camping tool, it is designed as a weapon and it performs very well in that application. It might be too thin for something that's very hard and dense.

 

[Nathan the Machinist]

The K20 is not some heavy sword shaped object, it is a real and proper sword.

It is a weapon, I would not use it to process firewood.

That would be like plowing a field with a Ferrari instead of a Lamborghini.

 

[cmcampbell]

Dry bone and dry bamboo are both much harder than living examples and may damage an edge.

My understanding is that Katana, Chisa Katana, Wakazashi are all intended for a pull cut or in some cases a push cut.
You are not chopping.
There is somewhat of a sliding motion to the cut. Watch Tamashigeri with rolled mats etc….

There is a reason swords and choppers are differently designed.

 

[cmcampbell]

The K20 is not some heavy sword shaped object, it is a real and proper sword.

It is a weapon, I would not use it to process firewood.

That would be like plowing a field with a Ferrari instead of a Lamborghini.




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Michael “Tinker” Pearce in discussions and his book THE MEDIEVAL SWORD IN THE MODERN WORLD, talks about center of percussion and related matters. I found it helpful to my understanding.