Carothers Performance Knives, Use & Abuse

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He mentioned the CS AK47 a few times, so I watched that one too. Not sure if I should be impressed that the AK47 performed similarly, or a bit disappointed that the BFK didn't do better than the AK47 🤔 . Either way, they took way more than I would ever dish out.
 
jlauffer said:
He mentioned the CS AK47 a few times, so I watched that one too. Not sure if I should be impressed that the AK47 performed similarly, or a bit disappointed that the BFK didn't do better than the AK47 🤔 . Either way, they took way more than I would ever dish out.
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JMHO, but I think it is important to consider the thickness of the blades if making a comparison.

That ‘little’ knife would get me out of any scenario I can imagine, and I look forward to getting one. Meanwhile I will smile while using my SDFK.
 
jlauffer said:
He mentioned the CS AK47 a few times, so I watched that one too. Not sure if I should be impressed that the AK47 performed similarly, or a bit disappointed that the BFK didn't do better than the AK47 🤔 . Either way, they took way more than I would ever dish out.
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Not sure how much of a difference it makes, but the CS AK 47 is slightly thiccer at 5mm.
 
jlauffer said:
He mentioned the CS AK47 a few times, so I watched that one too. Not sure if I should be impressed that the AK47 performed similarly, or a bit disappointed that the BFK didn't do better than the AK47 🤔 . Either way, they took way more than I would ever dish out.
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I make a few knives that are designed to be more unbreakable but the Field Knife is a practical tool knife designed first and foremost to be a useful cutting tool. The AK47 is a little bit thicker, has a reinforced point, more obtuse primary grinds, and I think it is thicker behind the edge. I would wager it is also sharpened at more than 20 DPS.

After an enormous amount of extremely rough use, the BFK broke at a damaged area of the edge that we know from experimentation here would be more severe at 18 DPS and less severe at 22 DPS. I don't know where Cold steel sharpens theirs, but a Busse that I have here came at 24 DPS and I wouldn't be surprised if the Cold Steel were similar. Most manufacturers sharpen their knives at an edge angle more obtuse than we do.

We have made some heavy duty knives that were sharpened at 22 DPS and were also thicker behind the edge but they weren't as popular because they didn't cut as well. The majority of the people who use our knives are pursuing performance.

I found on the internet that the Cold Steel has a rockwell hardness of 58.

It has never been my goal for the BFK to be unbreakable. I'm completely satisfied with its performance in that demonstration and the fact that another knife made of the same alloy with some similar dimensions did not break doesn't bother me because the design elements on the blade geometry that allow it to be more durable work against the cutting performance that I'm after, and the softer more ductile steel that is less prone to crack propagation is not going to have remotely the same edge retention that we have. The person performing the test may not have noticed the difference in cutting performance and edge retention between our knife and the AK-47, but his use of knives might be a little bit different than some of us.

I have never said that my knives are the most unbreakable knives. I have said that my knives are extremely durable and have the best edge stability and edge retention of knives of their type. My intention is to make a hard use cutting tool that you don't have to worry about. And I believe that this demonstration aligns very closely with my demonstrations of the same knife. The fact that another knife withstood even more insane rough use, at the expense of cutting performance and edge retention, does not seem weird to me. I already have more than enough durability baked into that design.
 
Nathan the Machinist said:
I make a few knives that are designed to be more unbreakable but the Field Knife is a practical tool knife designed first and foremost to be a useful cutting tool. The AK47 is a little bit thicker, has a reinforced point, more obtuse primary grinds, and I think it is thicker behind the edge. I would wager it is also sharpened at more than 20 DPS.

After an enormous amount of extremely rough use, the BFK broke at a damaged area of the edge that we know from experimentation here would be more severe at 18 DPS and less severe at 22 DPS. I don't know where Cold steel sharpens theirs, but a Busse that I have here came at 24 DPS and I wouldn't be surprised if the Cold Steel were similar. Most manufacturers sharpen their knives at an edge angle more obtuse than we do.

We have made some heavy duty knives that were sharpened at 22 DPS and were also thicker behind the edge but they weren't as popular because they didn't cut as well. The majority of the people who use our knives are pursuing performance.

I found on the internet that the Cold Steel has a rockwell hardness of 58.

It has never been my goal for the BFK to be unbreakable. I'm completely satisfied with its performance in that demonstration and the fact that another knife made of the same alloy with some similar dimensions did not break doesn't bother me because the design elements on the blade geometry that allow it to be more durable work against the cutting performance that I'm after, and the softer more ductile steel that is less prone to crack propagation is not going to have remotely the same edge retention that we have. The person performing the test may not have noticed the difference in cutting performance and edge retention between our knife and the AK-47, but his use of knives might be a little bit different than some of us.

I have never said that my knives are the most unbreakable knives. I have said that my knives are extremely durable and have the best edge stability and edge retention of knives of their type. My intention is to make a hard use cutting tool that you don't have to worry about. And I believe that this demonstration aligns very closely with my demonstrations of the same knife. The fact that another knife withstood even more insane rough use, at the expense of cutting performance and edge retention, does not seem weird to me. I already have more than enough durability baked into that design.
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I handled one and it felt thinner than I expected, was a delightful surprise.
 
Crag the Brewer said:
Not bad, the pipe kills Most of them!
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I'll bet it wouldn't if he started with the pipe.

The spine was dented up and beat to shit at that point.

Mine is pretty hard and it has chamfers, which reduced the damage that mine took, but I'll bet a lot of them have pretty serious stress risers started in their spines before they get to the pipe. And that pipe is a good way to whack the blade pretty hard.

Again, overall I think it was a very good demonstration of my knife and any other knife that's going to get subjected to extended extremely rough use.
 
I’am not someone who care about this forum. If the maker of those famous knives don’t care about those results it’s his thing. Those who follow blindly are whores…simply
 
Godbout1987 said:
I’am not someone who care about this forum. If the maker of those famous knives don’t care about those results it’s his thing. Those who follow blindly are whores…simply
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You may express your opinions regarding the knives and / or the tests, but what you can't do is be rude and insulting to the membership.

You've received the only warning you will get.
 
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