Folding knife breaks

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Wow. This marks the very first time I have ever "dinged" a user and reported an entire thread and the person who started it to the supermods for trolling.

I suppose that's sort of an accomplishment.

For goodness sakes, FFK, give it up already. You've tried this time and again in General and ShopTalk and Tech Support, and you've gotten the exact same feedback every single time. No one is buying your concept, or your thinly-veiled attempts at promoting your concept. It's just getting embarassing now.

Build your idea and pass it around for testing. Put up or shut up. Otherwise, you're the absolute epitome of a troll.
 
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Look. As I've said already.

You want to produce a knife that solves the problem of weak lateral strength in the pivot area.


Step 1. Before ANYTHING else. Before brainstorming. Before designing. Before modeling. Before FEA. Before prototyping.

Step 1. You need to establish the boundaries of the problem you are trying to solve.

It isn't enough to just say: "ah ha! Folding knives are weak at the pivot so I shall design a stronger one".

You need to show that there is a problem that needs to be solved FIRST before you go about solving it. You should have broken a few knives. Tested out what does exist and found it needing improvement.

Finding one obscure Polish forum post about a decades old knife snapping at the pivot is not enough.

Show me a modern folder design with two titanium slabs held together with a bull pivot coming apart before the blade snaps under pressure attainable by a human, and then we can talk about fixing it.

Nobody else sees the problem you see.
 
Is anyone even remotely interested in the knife anymore?

I remember there was at least a couple people interested in the beginning at the thought of a new locking mechanism even if they didn't care about the whole lateral stress strength mumbo jumbo. But as time goes on it seems like FFK is just annoying more and more people and pushing away further potential customers with all the thinly veiled advertising posts and threads on a knife that's not even out or tested to do what it's being marketed to being able to do.
 
FFK said:
pnsxyr,
"Looks like the knife fell apart exactly like I thought it would. Washers to blade tang clearance created the space needed to turn blade tang into a lever that pried the

knife apart. Duh.... The G10 compressed, liners deform, pivot pin breaks, simple ! Looks like he needed to do more with the only knife he had at the time. Probably not just a

video on how to make kindling from a 2x4 in your back yard. Idk....a doohickey might have helped".

Lateral strength is not important to you and that's fine. It might be to someone else. Computer simulation is not an important tool to you and that's fine. It might be to

someone else. If you don't agree with the design or premise and that's fine. Someone else may. I have not brought up the FFK on this thread unless it was brought into it.

Right now we are fine tuning the FFK via FEA testing. streamlining the design....that's where money is best spent. Yes eventually we will have to break FFK prototypes.

Ok........so there was a post about using a larger pivot pin. Does anyone think that would help ? I guess if you increase the pivot pin diameter you will also decrease the blade

tang steel around it ?
Click to expand...

Lateral strength is an integral part of the design and one among many features. It is one of the least important design aspects as far as I believe now, as I think you have done a good job proving that it is not an important aspect and that virtually no knives lack lateral strength relative to the rest of the knife. When such emphasis is placed on strength, things like practicality and edge geometry go the way of the dodo.

You have been told by knifemaker after knifemaker and knife owner after knife owner that you need more than a computer simulation to make some of the statements you have made and certainly to improve your product. Digital rendering is extremely limited in terms of real-world usefulness, very expensive, and really don't conclude much at all because "in theory" and "in practice" are almost never the same. Continual "refining" based on a computer simulation only without any real-world testing is not only expensive, but not good R&D.

In another thread, you mentioned you spent something like $30,000 on a few prototypes and significant digital modeling. While it is your money, I can't say I understand that being money "best spent" when most makers are producing actual knives for R&D testing for dramatically less money, not to mention you are continually refining a knife that lacks the real-world testing and field usage that is the critical element to design.

As for your statement about computer simulations being "necessary", that's almost laughable. I have numerous high-quality knives that have not spent even a second in a digital sandbox and they are some of the finest knives I own. Again, because they are tested using actual real-world data and findings.


Until you have this real world testing or have it done by a neutral party, these threads are just armchair debates on hypotheticals and in which there is zero grounding to speak on actual capabilities (or lack of). You have made claims. You have claimed other products as weaker/less capable than yours. You have not supported these claims whatsoever. Instead of creating more threads or running up another 10 grand in digital testing, prove to us your claims.
 
He can't prove a thing and this merry ride you're all being taken on will continue untill it is stopped for him or you walk away......
 
stabman said:
Bigger pivot.
Simple as that, and many, many, many knife companies have already done so.

The issue that usually isn't an issue has already been solved.
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Also, bigger screws and hardened steel liners as opposed to titanium liners.

But, even with titanium liners, based on the translated text, it sounds like it was very difficult to break it like that. It doesn't sound like this could be a problem during normal use -- you'd have to intentionally try to break it. I think most folder blades with normal thickness (Up to 0.20".) would break before bending the liners or breaking the screws.
 
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Went through the entire thread. Painful to say the least.

I have come to only one conclusion.

I will NEVER buy any FFK knife.
 
Lateral stresses? What about those folding knives that break when you repeatedly beat them with a sledge hammer? I'm running computer simulations now to address this issue.
 
I gave FFK the benefit of the doubt in the previous threads, more to support the underdog than anything else. Even asked him some polite and pertinent questions to (obviously) no response. But at this point, it's just entertaining watching the FFK knife and account crash and burn.
 
FFK

could you name just one situation where the added lateral stability (over a knife like a hinderer, strider...) would be useful?
 
knife to a gunfight said:
So Mike (FFK),
How ARE you coming on those "real life" tests you promised us?
Click to expand...

FFK said:
Right now we are fine tuning the FFK via FEA testing. streamlining the design....that's where money is best spent. Yes eventually we will have to break FFK prototypes.
Click to expand...

That was from part of what he said last night earlier in this thread. So I guess no where, but I guess there are more computer simulations of it being broken.
 
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This thread and all the other "Lateral Strength" threads have me feeling like a rubbernecker. You know passing the horrible accident, you're gonna see something disgusting, you will learn nothing, by slowing down and looking you're feeding into more of the chaos, but for some reason, you can't stop looking.
 
jac_solar,
What current production folding knife has hardened steel or Ti 6Al-4V(HT) liners and stainless or Ti 6Al-4V bolsters ?
 
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