Would you call this a pinched washer?

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Friction wear and if it's really over tightened galling. Open up your folder and you will see the wear on the blade and the corresponding wear on the washer.
 
JustinFournier said:
Friction wear and if it's really over tightened galling. Open up your folder and you will see the wear on the blade and the corresponding wear on the washer.
Click to expand...

If you are considering the polished area of the blade that rides on the washer, I would point out that this polishing done by CRK before you receive the knife.

Unless you are somehow cycling the pivot fast enough to generate considerable heat, I am not sure how you are going to get a soft washer to wear or gall a hardened steel blade.
 
I have to agree with unit, there is no danger at all of the washers wearing the blade or handles. The washers are the softer sacrificial element between the two.
 
Ok, both of you go open your 21s etc or whatever you have and show us a pic :)

Please confirm you are telling me that CRK "polished" the blade like this:

maxresdefault.jpg
 
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JustinFournier said:
Ok, both of you go open your 21s etc or whatever you have and show us a pic :)

Please confirm you are telling me that CRK "polished" the blade like this:

maxresdefault.jpg
Click to expand...

Unit is right..It's not wearing the blade, but polishing the blade in the axis of rotation.
You are not going to wear a blade with the washer, which really is the point of the washer.
 
OK so maybe wear is not being used the same by all parties involved.

From what I remember of what I was taught this is not polishing but burnishing which is definitely a type of plastic deformation or wear in which a rough surface is smeared making it shinier. Maybe I'm wrong. Either way it probably doesn't matter and I'll leave it be.
 
Decided not to send it in. The action of the knife is basically flawless now. I think it just needed some more break in, particularly getting the detent track worn in. I have about as minimal grease, almost none, in there as you could have since I wiped off the blade and scale before putting it back together. I have zero play and it's butter smooth, probably as smooth as my small micarta, just not a free dropper like it is.

I think my pics made it look worse than it is due to reflecting light. The two nearly microscopic indentions on those inside corners don't seem to be affecting anything. I gave them a light polish on a strop to hit any high spots, although I never really had any, and couldn't ask for a better action now. Extremely smooth, perfectly centered, and rock solid lockup like a CRK should be.
 
Nope, not even closed. Couldn't be more pleased now. I think people used to 21s just need to be patient with these conventional pivot models. Give it a week or so. After I figured out the loctite I've opened it probably a couple hundred times since and still rock solid and so smooth. I love this knife.
 
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