Pivot Screw

Joined
Jul 17, 2014
Messages
44
I'm new to the Emerson family, having recently purchased my first – a CQC-7BW which I'm very happy with (especially now that I've figured out how to keep it sharp :) ). Curious about one thing. As most of you know, the pivot screw on most folding knives impacts how quickly the knife can open and the stability of the blade when it's open. Tighten the screw too much and the knife can be difficult or even impossible to open. Loosen the screw too much, however, and you'll find the knife opens very quickly, but is "wobbly" even with the best lockup. Emersons are no exception (at least the new CQC-7s (can't speak to any others, but assume they are essentially similar). This isn't necessarily a bad thing, or even a design flaw. It's just the reality – there are costs and benefits to anything. With folding knives, you usually have to balance ease of opening with open blade stability.

So here's a question: How tight/loose do y'all like to keep pivot screws on your Emersons? I've had mine long enough to break it in – with the help of some ballistol and my obsession to needlessly open and close my blades. I set the screw by tightening it untii I can't open the blade using the thumb disc. From there I loosen the screw slightly less than ⅛ of turn. In this position, I cannot "flick" the knife open like I can on, say, my Benchmade Triage, but I can easily open it if I keep my thumg on the disk. On lockup, the blade is about as tight as I've ever exerienced with a folder, even when compare the BM Axis locks.

Interested on everyone else's preferences.
 
I keep it only as tight as is necessary to prevent blade play. On some Emerson models it's tighter than others. Usually between 1/4 and 1/2 of a turn backward from fully tightened down.
 
As tight as I can comfortably crank it with my thumbnail. This is usually enough so it's still smooth with no blade play.
 
I like the thumbnail method on older thin-slot Emersons, it's like a built in torque wrench. I prefer the old thin-slot screws, but the new one's work fine with a coin (which is also convenient).
 
I also tighten the pivot enough so there is no bladeplay. The smoothness of the opening can be made better by simply opening and closing the knife.
 
I know people (not Emerson owners) who loosen pivots because they're convinced that the blade has to fly open. Then they complain about the bladeplay.
Tokerblue – I agree completely.
 
There is a sweet spot that you have to find all on your own. You'll know it's right because it'll be just the way you want it. When I find that spot I count the revolutions all the way back out and then add a dot of blue loctite to the threads. I then count the revolutions back in and check the awesomeness. It's usually right on.
 
Whenever I get a new Emerson, I immediately disassemble it & clean all the parts with denatured alcohol.

I then carefully reassemble it with a small amount of Finish Line Extreme Fluoro grease.

At that point, I add one drop of blue Loctite to the pivot threads and tighten it just to the point where there is no side to side play.

I then reprofile it and sharpen to a mirror finish hair splitting convex edge (I do leave them all as chisel grinds however)

~John
 
I don't care for the blade flying open, so always tighten it to a point where my thumb can crank it open a bit less comfortably, and then continue the open-close-open-close... cycle. At some point, it becomes very smooth. From what I know, the nitrolon washers are self-lubricating, and do not require any lubrication to be added, so I don't.
 
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