Triad Lock Verticle Play??

It's a great testament to the sturdiness of the triad lock that you can use it as a throwing knife or an axe to baton trees down and the lock will only develop minimal vertical blade play. Sounds like it's time to buy another and use this one to see how many holes you can put in scrap metal before it breaks!
Well i did try stabbing a pineapple juice can (steel i think) and the pointy tip got chipped in the 2nd try haha
 
Are the two pins the same diameter...the pin at the blade, and the pin at the lock bar?

On my Lawman, the pin at the blade has one groove in it, and the pin at the lock bar has two grooves in it, so it makes me think these pins are different for a reason.
 
Are the two pins the same diameter...the pin at the blade, and the pin at the lock bar?

On my Lawman, the pin at the blade has one groove in it, and the pin at the lock bar has two grooves in it, so it makes me think these pins are different for a reason.
No the pin at the blade has a wider diameter than the one on the bar that acts as a seesaw
 
No the pin at the blade has a wider diameter than the one on the bar that acts as a seesaw

yup, most of the time the pin that contacts the blade is larger. sometime the size different is not obvious, and since the triad lockbar's hole is bigger, the bigger stop pin can still fit in it so you may not realize the stop pins are in the wrong place. you dont wanna mix them up otherwise you will have vertical blade play. been there, done that.
 
OK I thought they were different diameters. I don't think I got my pins on my Lawman mixed up when I took it apart, but there is a chance I did. Don't have any calipers to measure, and I can't eye-dog it.

Right now my Lawman is assembled with the one groove pin at the blade, and the two groove pin at the lockbar. Can anybody confirm that this is the right pin locations? I do have just a tad of vertical play, but I am pretty sure that came from me tweaking the leaf spring. I can live with that play because I can inertia open it now if need be, and the knife is a lot easier to close plus the knife stays closed good too. Had to tweak the spring twice to get the lock to my preference.
 
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If you have vertical play, most likely the pins are swapped. You can use the blade tang as a radius gauge. Just take apart the knife, rest the pin in the mating area on the blade tang and hold it up to a light source. You should see very little or no light through the contact area.
 
I took apart my Lawman last night, and I can confirm that the one groove pin goes near the blade, and the two groove pin to the lockbar. When I switched it around, there was way too much play.

Like I said earlier, I did tweak the spring, and this caused mine to have just a tad of vertical play. I mean just the very slightest of play, which is not even noticeable unless I really pull on the blade very hard, so it's a non-issue to me. I verified that the spring does control vertical play by how much force it is applying upward to the lockbar. I just gently pressed down on the lockbar nearest the blade, and then there was no vertical play. I am going to leave mine as is with the tweaked spring because I can easily close it now, and I can inertia open it too if need be.
 
The lock bar is bottomed. This means the abuse has peened the locking surfaces and all the corrective adjustment has been used up. The lock will not fail, but you won't be able to get rid of the play without replacing parts. Rotating and locktiteing the stop pin might help. It would depend what parts are damaged the most. You could just keep it as a beater and get a brand new AUS8 version for 25-30 bucks.


Yes indeed. Totally agree here. This design, once the lock bar travels all the way until the tang, it will never rid itself of slop. In fact i think the whole triad thing is a brilliant marketing ploy. The fact that the mating surfaces are slightly angled, (this is nothing innovative by him- and all good back locks should feature this in their designs) is what (and they certainly admit this in their marketing hype) actually allows the blade to take great loads upon the spine because they just want to move together, not apart from one another. The spine whacking thing is just crazy and a stupid thing now seemingly endlessly perpetuated in the social media as some sort of test to the worthiness of the product. For all folding knives, including the triad locks, once that stop pin has been damaged, the whole idea collapses (literally LOL).
 
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