When re-assembling folders why tighten the pivot first?

[falar]

I notice in many how-tos and disassembly/re-assembly videos often it is stressed that when re-assembling the knife to always tighten down the pivot screw first before you tighten the body screws and then go and adjust the pivot to its final, perfect location (for you).

No one ever explains why though. I also feel that in almost every case in which I have done my first take down of a knife that after I re-assemble no matter how much I tinker I can never find the "sweet spot" of best action and centered blade ever again, as it came from the factory.

 

[Mo2]

I don't tighten the pivot first. I mean I usually install it first but I don't tighten it all the way. Usually it's last for me due to centering. I mean every knife is a little different though.

 

[sickpuppy1]

I'm speaking thoughts as it were, not scientific knowledge.but....... if it tighten the pivot first it should be centered between the scales and therefore less binding. Then tighten the outer screws to center the blade. I'm sure if I'm wrong, I'll be corrected.
Now to be honest, I usually do it like Mo2,lol

 

[115Italian]

I think the theory is to tighten all the hardware from top to bottom, pivot to handle end. Its suppose to make the knife square up better, in theory.

I think this method started because of Hinderer. Its how they recommend centering their folders. Then people seem to adopt it as a method for every folder.

 

[Lapedog]

I think the theory is to tighten all the hardware from top to bottom, pivot to handle end. Its suppose to make the knife square up better, in theory.

I think this method started because of Hinderer. Its how they recommend centering their folders. Then people seem to adopt it as a method for every folder.

Yeah some folders you gotta feel it out more and try all types of things to get it centred.

Honestly though as long as the blade doesn’t rub the inside of the handle when I’m opening the knife with either hand I don’t really care that much about centring anymore.

Essentially a little bit of off centre doesn’t bother me anymore. Compared to some other knife problems like lockup it is inconsequential to me.

 

[Ajack60]

I’ve never tightened the pivot first on any of my folders. That’s always been the last part of assembly for me. I’m not much of a YouTube watcher so maybe I’m doing it wrong.

 

[falar]

I don't tighten the pivot first. I mean I usually install it first but I don't tighten it all the way. Usually it's last for me due to centering. I mean every knife is a little different though.

This is really what I meant..

1st, secure the pivot "close" to the limit. Then go and secure body screws all the way. Finally, adjust pivot to preference.

 

[Sergeua]

You got it OP.
You want to secure the pivot first as there's usually force from framelock or liner or simply pivot features you just want snug before moving on to, in many cases, smaller body screws. Don't overtighten that's all and do assemble in open position.

After, do body screws and loosen the pivot if you have to. Again don't overtighten anything.
Force blade whichever direction you want and tighten body screws. Now you finally tighten the pivot.
Usually with frame or liner they push on the blade when it's in closed position. Tightening pivot area centers the blade. So when you have an issue with some of these that won't center, all you are trying to do is get the blade even a bit more so towards the lockbar while your at body screw stage. Then you still got the big nut to adjust at the very end that will put in the final squeeze on things.