Modified Production Knives (traditional only)

I was sharpening some kitchen knives for a local customer and one was a Furi Rachael Ray Santoku. It was a little bit bent so it tried bending it slightly with my hands. Nothing extreme, right? I’m not The Hulk. But this happened:

D25C7BCB-45D2-4271-B424-8744B9A27C52.jpeg 6CF4FAF2-22F5-4518-972C-103AC7375543.jpeg

I tried to call the customer to see if he wanted a replacement knife or just the cost, but I haven’t heard back yet. Have any of you knife makers and modifiers had this happen when straightening a blade?
 
Unfortunately yes I have
JTB_5 said:
I was sharpening some kitchen knives for a local customer and one was a Furi Rachael Ray Santoku. It was a little bit bent so it tried bending it slightly with my hands. Nothing extreme, right? I’m not The Hulk. But this happened:

View attachment 1383595 View attachment 1383596

I tried to call the customer to see if he wanted a replacement knife or just the cost, but I haven’t heard back yet. Have any of you knife makers and modifiers had this happen when straightening a blade?
Click to expand...
 
JTB_5 said:
I was sharpening some kitchen knives for a local customer and one was a Furi Rachael Ray Santoku. It was a little bit bent so it tried bending it slightly with my hands. Nothing extreme, right? I’m not The Hulk. But this happened:

View attachment 1383595 View attachment 1383596

I tried to call the customer to see if he wanted a replacement knife or just the cost, but I haven’t heard back yet. Have any of you knife makers and modifiers had this happen when straightening a blade?
Click to expand...

:eek::eek::eek::poop:

That's some horribly brittle stuff, imagine it happened while you were chopping :D
 
Was it a quench issue? something during production to have made it so brittle? Once upon a time, I was modding a one arm gec blade and Bob had warned me about affecting the heat treat.
 
JTB_5 said:
I was sharpening some kitchen knives for a local customer and one was a Furi Rachael Ray Santoku. It was a little bit bent so it tried bending it slightly with my hands. Nothing extreme, right? I’m not The Hulk. But this happened:

View attachment 1383595 View attachment 1383596

I tried to call the customer to see if he wanted a replacement knife or just the cost, but I haven’t heard back yet. Have any of you knife makers and modifiers had this happen when straightening a blade?
Click to expand...
That was an existing crack in the blade. See how there is the different color at the spine, it was already there, only the lighter stuff is a new break.
 
at least you get to see a really nice cross-section of the blade grind...

Go back and watch the old western series "Branded".... might give you some ideas.....:cool:
 
mrknife said:
Was it a quench issue? something during production to have made it so brittle? Once upon a time, I was modding a one arm gec blade and Bob had warned me about affecting the heat treat.
Click to expand...

I couldn't speak to the manufacturing, as I was only tasked with sharpening it (I wasn't even that far!).

jsdistin said:
That was an existing crack in the blade. See how there is the different color at the spine, it was already there, only the lighter stuff is a new break.
Click to expand...

I wondered about that discoloration. I'm assuming the coloration is rusting from water seeping into the crack? I wish I'd have examined it a bit closer beforehand. Next time I will be more meticulous.

jsdistin said:
JTB_5 JTB_5 If it’s a good company it should be a warranty issue.
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That particular model of knives are no longer produced by Füri, so I'm guessing any limited warranty will have expired. I'd be surprised if it has any sort of lifetime warranty, but I can ask the owner.

Will Power said:
I did a little investigation. FüRI sounds German but of course it's not a German name...Designed in Australia using Japanese steel...made in PRC.
Click to expand...

I noticed that as well. In fact, as I was looking at some other companies for possible replacements, I noticed that Henckels has blades made in Spain, China, and Germany (just from the Santokus I perused). At least they gave the country of origin.

hornetguy said:
at least you get to see a really nice cross-section of the blade grind...

Go back and watch the old western series "Branded".... might give you some ideas.....:cool:
Click to expand...

I've never seen that, but now I'm going to go check it out.
 
JTB_5 said:
I wondered about that discoloration. I'm assuming the coloration is rusting from water seeping into the crack? I wish I'd have examined it a bit closer beforehand. Next time I will be more meticulous.
Click to expand...
It’s probably from the heat treat, cracked in the quench and then was tempered. My guess is that it wouldn’t have been visible. If you read the warranty stuff for falkniven about broken blades the only way they will cover it is if it has a discoloration like that because they can tell it was a manufacturing defect.
 
jsdistin said:
It’s probably from the heat treat, cracked in the quench and then was tempered. My guess is that it wouldn’t have been visible. If you read the warranty stuff for falkniven about broken blades the only way they will cover it is if it has a discoloration like that because they can tell it was a manufacturing defect.
Click to expand...
On closer inspection I can see some of the other hairline fractures on the spine of the knife. It has to be heat treat or later heat damage. It is like the steel was disintegrating.

310FD454-7AA4-4A7C-90A0-82DAF8517516.jpeg
 
On a related note, I once was at GEC to get some modified blades recentered and William had warned me about the possibility of the blade snapping. Now some folks when they take a part a knife for blade deletes manage to get the centering just right, so I have a question regarding attempting to recenter a blade. Another member had suggested using two 2x4s and sort of hitting it, but at a certain point where the blade is placed on one piece and held flat and the other is used to strike the blade. Is there any truth to this? Or am I misunderstanding the process. Thanks all
 
Update: the customer couldn’t have been kinder. Apparently the knife was part of a two piece set given as a gift at least 7 years ago. The other knife had already been thrown out. They didn’t even want a replacement. I offered a discount and they ended up paying me a little extra on top of that discount and asked for me to keep up their sharpening needs in the future as they needed them. Pretty awesome.
 
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