Strongest folder lock

Maybe you should end all this hard decision making about which lock and just get you a smaller fixed blade with a nice horizontal sheath made for it by Bob Dozier making it as convenient to carry and use as any folder. Then you don't have to worry about all this lock question stuff.

On the locks though there are some things I want to point out with more clarity for you since you seem confused. This may backfire though and confuse you even more and if so my apologies. I believe in being thorough. Strength is irrelevant if the lock is so unreliable it slides to defeat way before the lock even begins to reach any kind of stress point testing its strength. It can be as strong as a bank vault but it doesn't matter if reliability is low. Any lock must be seen as an individual. You cannot judge the rest of them by one but after seeing many you can get a better idea of where each may stand. Any lock that is new and untried must be tested out and used slowly at first to get to know it.

In my experience:

Liner locks typically are not as reliable as frame locks, axis locks or lockbacks. Frame locks rarely defeat the same way a liner lock does by sliding off the contact from light pressure and when they do its often times for reasons other than those associated with liner locks. Frame locks have a bare side so the main thing that can happen is the lock can be hyper extended to lose its spring to make it move in adequately behind the blade to support it. Reduce the spring tension and you make it unreliable and also easier to defeat by possible slide off of the contact since there is less resistance AKA 'spring tension'. Some locks of this type on rare occasions are not properly tensioned from the factory. In other words the locks are not traveling in far enough to make adequate contact to support the blade under load. This can of course be related to a weak spring or just a tight tight contact that will require some care to break it in properly to get the lock in there adequately for use. This is done on your part either by noticing right away its precariously sitting too close to the edge of the contact and sending it back to be looked at or by replacing it or using it to break it in slowly. In these cases its a quality control issue from the makers stand point because when done right the frame lock is the better choice for reliable performance IMO.

Lockbacks as has been mentioned are largely based on a trust issue. You have to feel good about it and unless you can take it apart to examine how it works, well, you'll never really know just how good or how bad the contact is. When done right the lockback offers both a high strength and a high reliability rating.

Axis, ball, liner and frame locks all allow you to see at a glance just how the lock up is. You can see clearly to know where you stand with it each time you use it. For this they are probably better in my mind for the average user that isn't comfortable taking a knife apart to examine it. On some knives taking it apart will void the warranty.

Once the hand is wrapped in behind a good frame lock where your grip supports the lock and proper contact is there with proper spring tension its hard to beat that for everyday ease of use and reliable performance. Even if the lock cut is thin its still going to exhibit a very high reliablility rating. Strength may not be its forte` but it will certainly be strong enough to use regularly and even heavily. I've seen some lock cuts taken down to extreme thinnesses and the knives have obvioulsy been well used and even abused in some cases. Most folks are not going around stabbing their knives in a tree to use them as a leg up. So unless thats what you want any of the mentioned lock types will probably suffice.

When the locks mentioned work as they should the Axis is the strongest. It also has a high reliability close to the top I'd say.

The ball is also strong but since this is usually done without liners of metal I'd still give the lead to the Axis here personally. Reliabilty is also high.

Lockbacks offer about as good a balance for both strength and reliability as can be found I'd say. I would not rate the lockback as the strongests for most made out there. I would say for normal and even into most heavy usage they'll offer more than adequate strength though and a more reliable lock.

Liner locks and frame locks are both sometimes problematic but both have a lot of good things going for them. Its a tough call. There are issues of the 'gravity knife' that come up many times with many of these where the blade is not properly kept shut. If the point can raise up out of the body of the knife by flipping it upside around and flicking it its going to be an issue more and more as we get into the 21st century. The detent ball that is supposed to keep that point down for you is often times not doing its job. This can be a safety issue as well as a legal one. There are reports here on these forums of people losing knives by the gravity knife law that makes it illegal. Each state varies. If you live in New York. I'd avoid the Dejavoo just for this reason. I've never seen one that the detent ball worked properly on.

STR
 
Since I began this thread a few days ago, with the great info you have all provided, I have tried to come up with a list of possibilities. By the way, I usually have a RAT designed Tops fixed blade with me when camping, but I always have a pocket knife, up till now a Buck Ranger. Way too heavy but built like a tank. I just want something a little lighter that I can open with 1 hand and has a pocket clip. So here goes:
Spyderco Para-Military or Endura
Benchmade Kulgara or Dejavoo
Lone Wolf T2
Who knows, by tonight the list may change. I wish there was a huge knife shop where I could see and touch everything.
 
imho the Paramilitary is your best bet of these options. Strong, thin and light, the lock is easily cleanable and extremely reliable and strong, and the blade geometry makes the Para an excellent cutter and versatile in the field. I prefer the Military for its size more, but the Para had been my favorite for a long time before and I would consider the compression lock stronger and more reliable by far over the liner lock.
 
All are suficient when properly manufactured and maintained. Each has their own favorite. Personally, I prefer the frame lock or the stud lock, but the two knives I carry most are liner locks...I've never had a problem out of them. Here's an interesting post by Ken Onion regarding the stud lock...
 
All are suficient when properly manufactured and maintained. Each has their own favorite. Personally, I prefer the frame lock or the stud lock, but the two knives I carry most are liner locks...I've never had a problem out of them. Here's an interesting post by Ken Onion regarding the stud lock...

I agree, it's clear that in all\most categories of locking systems there are bad and good examples. If you stick to a 'quality' manufacturer then it is highly likely that whatever locking mechanism you get it will be more than satisfactory for your use.

I'm not sure how they test folding knife locks but one approach could be to cut down a small tree (or a trunk of a fallen tree). It is likely that you may do some chopping, carving, etc. and exhibit forces in all directions on the pivot. If the knife lock hold up by the end of the process then it's pretty good.

It's a little more difficult to test of long term durability...
 
Quite frankly, the axis lock on the (first and only) Benchmade I have (a 556 minigriptilian) has blown me away in terms of its solid lockup. Granted, although my other knives are lockbacks, I have no other folder that shows no blade play at all. It just doesn't move at all, I suspect due to the combination of inner liner slabs and the lock design. I've pretty much stopped looking at any more folders.

This has left me with two favorites: the 556 Minigriptilian and the Fallkniven U2. I'm not finding any desire to buy any more. For now :D

P.S. there's a video in a post somewhere in this forum showing the owner digging soil with his minigriptilian closed and using the back end, with no clogging or failure to lock or stay locked. It's kinda fun to watch it when you realize that the dog standing in the background started digging the ground too (obviously watching his owner). So cute :D
 
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Quite sure. Locks don't break, they slip. That is they do not fail due to being broken, but because they fail to engage properly.

Therefore the first sentence of mine that you quoted.
"Strength vs. reliability".

I agree on the axis and lockbacks being quite reliable. But then again, in almost 50 years of using lockbacks, I've never had any failures. I've not used the other locks as long as I've used lockbacks.

Folks talk a lot about "strongest lock" and sometimes about "reliable lock", but I don't hear much about lock failures of knves from high quality manufacturers. You have to wonder how much theory is involved here vs. how much real life failure. Hence my last sentence in the first post, "Buy a knife from a good manufacturer and don't worry about "strongest lock.""

I agree with knarfeng. I have a 30 year old Buck 110 lockback that is still reliable and strong. I have Spyderco Militaries using liner locks that have never failed and Benchmade Axis locks that operate with uncanny smoothness. The common denominator in all of these knives is that they are well made examples of their kind and that I trust them all. Right or wrong, my favorite lock for security is still a lockback. My favorite locks for ease of use for one handed closing are the liner lock, compression lock, frame lock and Axis lock.
 
You need to differentiate between "reliable" and "strong".

The weakest point of a folder is not usually the lock but rather the pivot.

What most folks are actually after is the most reliable lock. There have been more reports of reliability problems with linerlocks than with others, but part of that is that many cheap knives are linerlocks. A well made linerlock is quite reliable. And there have been reports of failures with almost all lock types.

Bottom line: want a reliable lock? Get one from a reliable maker.


Although I didn't read all the posts in this thread I just had to take this one and say that it just about sums it all up. Good post knarfeng!:thumbup:


Btw, I'm going to throw out a couple more that are in the price range you have, well maybe a small bit over on one of them. They are a couple of the ZT Zero Tolerance models. One is the ZT0200, which is a liner lock, but one of those that is built correctly, and the other knife should make a great camping knife and it is the ZT0500 MUDD, a Gavin & Grant Hawk design, that has a unique lock called the linear sliding lock. It sorta works like the Axis lock but on one side only. The lock and the pivot area are sealed with neoprene gaskets which should be a real advantage in wet and/or dusty conditions. This is a well built, hefty, and tough piece of cutlery that deserves a looksee!
 
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What about torque on locks? I have torqued liner locks to failure (lock bar just slips off). I imagine frame locks will have the same issue?
 
If a 5.6 oz Ranger is too heavy for you ?? (great knife BTW)
You're going camping right, like in the woods?

Go with a Spyderco Para-Military 3.75 oz strong Lockback
Benchmade Mini-Skirmish 3.96 oz insane vault-like Ti Framelock
Benchmade Grip 3.25 oz or Mini-Grip 2.6 oz Axis Lock

But I'd take the Ranger and use the extra money on gas & power bars..
 
Well vote me in for the axis or frame lock. I have both, used both hard, and never had one fail on me.

Excranium - The benchmade dejavoo is a well made, very smooth, good looking knife, and while i have never had mine fail on me the liner lock is fairly thin so its not at the top of my list for camping or harder use chores.

I would recommend picking out the most useful design for my intended purposes made by spyderco or benchmade. These are two companies that make quality knives in that pricerange that I have never had any problems with.
 
Shouldn't any locking folder be used with the realization that the lock could fail. Then, incorporate that mentality into what you are using the knife for and use extra awareness and caution.
 
As long as you're buying a quality knife, the lock should be the last of your issues. I have an axis lock benchmade which I love, a lock back spyderco which I love (although it did fail to lock on my the other day due to lint, but that could happen to any knife), and I have a titanium "modified" liner lock on another benchmade I own. People seem to be giving liner locks a bad rap, but like my first comment, if you buy a quality knife, the lock should be quality as well, regardless of the type. My Benchmade 905 with the liner lock is now my main EDC, and it locks up like a bank vault.

Bottom line: Good knives most always come with good locks, no matter what type.
 
If a 5.6 oz Ranger is too heavy for you ?? (great knife BTW)
You're going camping right, like in the woods?

Go with a Spyderco Para-Military 3.75 oz strong Lockback
Benchmade Mini-Skirmish 3.96 oz insane vault-like Ti Framelock
Benchmade Grip 3.25 oz or Mini-Grip 2.6 oz Axis Lock

But I'd take the Ranger and use the extra money on gas & power bars..
Paramilitary is a compression lock.
 
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