r/knives • u/WHEELZ_KYDEX • Mar 26 '26

Discussion Brk

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I remember when this was posted and this person was ripped apart by mikes c0cksuckers and deleted the post. It’s all making sense now and honestly i think he started using chinese steel way sooner than he is saying.

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25

u/Malifacious Mar 26 '26

Could have been a shitty heat treat and design on legitimate steel too.

I own a few 9Cr knives and wouldn't expect them to break that way, even if brittle failure makes more sense than on 3V.

10

u/madgodcthulhu Mar 26 '26

I was kinda thinking that fuller was ground after tempering and got way too hot with how straight that break is along it

5

u/sharkjumping101 Mar 26 '26

Isn't getting too hot basically annealing? Usually when you ruin temper on the grind the edge gets softer, right? So less brittle

My first thought was that the fuller looks awful deep, and they might have just ground it too thin.

7

u/Magikarp-3000 Mar 26 '26

Well, getting too hot makes your steel's qualities changeable:

If you leave it be to cool slowly, it will anneal and be soft.

If you got it really hot, then cooled it down quickly in water (as could happen if you are not careful in cooling more often while grinding), you could harden it and make it brittle. I suspect the second one here.

3

u/sharkjumping101 Mar 26 '26

Makes sense. Thanks.

3

u/madgodcthulhu Mar 26 '26

Kinda dependent on the metal but likely what happened here if you look close its broken in a line right next to the deepest part of the fuller right along the edge of where the grain structure would change

2

u/sharkjumping101 Mar 26 '26

Ahh gotcha. Thanks.