Cracked blade?

Never seen this before or even heard of it. How bizzare. One has to wonder how long it has been like that undetected?

 

Heard of it, Yes
Seen it, No

It is entirely possible, as the thumbstuds are friction fit, so they are slightly oversized to the hole they need to go in.

I believe this is one of the main reasons behind not being able to get new thumbstuds in discontinued blades, such as regulars, as it risks the possibility of cracking the blade.

 

I've seen one or two threads about this happening. It seems very rare and CRK replaced the blade.

 

I had it happen once on a BG-42 serrated blade. It was old 97 if I remember right. CRK replaced it very fast. You will have no problem if you send it back I am sure.

 

Not had it happen with CRK, but with other brands. If a blade is going to crack it is the likely spot to do it.
I have had 2(again other brands ) land up with cracked blades(at the stud) after shipping to the new owner. I certainly didn't notice either before selling and have to wonder if it could have to do with temp change on the flight-or course it could be I just need better glasses One was a sell back to the original owner and I had just had a couple weeks and never used or carried.

 

Seen it on a very heavily used Large 21. The owner wasn't even aware it was cracked until I pointed it out - he wasn't sure if it had come that way, formed later or how it happened. z

Definitely a very rare occurrence on a CRK of course. Usually I only see/hear about it when a new model and usually new steel to a company is first being run.

 

First time I've seen it.

 

Wow,
Thanks for showing me the problem..
Had to look close at my Inkoski.
All good...

 

I am sorry this happensd to you but it makes me feel better about EDCing a Mnandi.

No thumbstud.

 

That is an interference fit thumb stud. If the hole is to big it falls out, too small and you get a through fracture.

 

Happens infrequently, but more than you think. Shows up once a month or two on the Facebook page with similar issues. But they take care of it via warranty.

 

I'm wondering if a heat treat issue? or just a stress fracture.

 

Heat treat is certainly a possible cause, but I would think it could also happen when putting in the thumb studs. If I remember correctly they won't replace thumb studs on the regulars-in case they are damaged they can't replace the blade.

 

Thanks for sharing.

I am looking at my 21L and the area is so minute that, one can bypass if there is a crack in that region. I can't really remember how many times my folder has dropped and hit hard surfaces but so far apart from snail trails, no big issues.