This was sent to me by a fellow member in response to a post from another member that mentioned "stress risers"

You will notice in the photo from Ron's post there is in fact a radius at the tang, albeit a small one, but a radius nonetheless. This indicates to me that RMK is aware that a sharp inside corner is detrimental to the durability of a knife, but is it enough? It doesn't appear the knife broke at the radius, but actually snapped beyond the radius possibly indicating another issue. Comparing the photo to the representations in the diagram, you be the judge.

Too bad that we do not have the other side of the knife to look at.

Randall Made Knives has the knife now and they know the failure mode.

Tom Vaught

ps My main question would be: Why post this "failure" on a international website vs just sending the knife back to Randall Made Knives to be replaced? Why not deal directly with the shop in the first place? Let it go, Joe.

Maybe he posted here because he thought there was some RMK expertise here. If you want to see the other side of the blade or want to know why they did what they did with his knife just call and ask them. Otherwise let's drop this whole witch hunt. If we want to limit what we can post lets all just head on over to the other forum that has all of the rules.
Lets just move on, his knife broke, the shop replaced it and why they did is RMK's choice and not any one's here on this forum.

Guys,

I think this has been discussed enough now.

Let's move on.

Thanks,

Rick

Uhhhhh, Tom, I think you must be confused. You may want to review the threads. So you are clear, this is NOT Rainy Day's knife, but a copy of one of the photos Ron posted of a different knife.

And Rick, this is a legitimate subject and thread. Perhaps you also mistook the intent as well as the content of my post like Tom did.

I think it is pretty clear the purpose of the post and the content of same. In case you are not getting it, it illustrates in the diagram where sharp inside corners create the identified stress risers. In layman's terms, weak spots prone to fracture.

The photo illustrates that at least on this particular knife, RMK did not have a sharp inside corner and the fact that the tang did not break at the transition from tang to blade, but the tang itself broke.

....

Ron that beast looks like he could take care of business.

Ron...'Serious' statement from a cat that look's like CNN host Anderson Cooper.

Thought this thread and subject was ORIGINALLY about Rainy Day's knife failure, Joe. I guess I missed the part about the "Stress Risers" discussion. Agree, if you put a "Stress Riser" in a part you can have a potential failure. As an Engineer for 36 years+ I can usually spot a stress riser situation without looking at a picture. We all know that Randall has an excellent design and the knives are created by skilled craftsmen with years of experience. It is possible to have a flaw in a piece of material from a steel manufacturer or a "One in Ten Thousand" manufacturing flaw when "all of the stars in the universe line up".

Most people understand this deal, Joe, and move on. So why don't we "let it go" and "move on" as I said before. You are not buying the steel, you are not making the knives, so you are an observer, just like me in these discussions.

I am done.

Tom Vaught