DLT Bark River Magnacut Santoku

Richard338 said:
Matthew Gregory Matthew Gregory my 3V was treated by Peters' via their standard protocol for 3V, which I believe is tempered around 1000F. I can't get the cold blue to touch it. I've had to blacken it with FC.
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That could be. I’ve only used them once, and not for 3v. I could be mistaken, but I was under the impression that they’d standardized cryo/low temp temper for that alloy.

I have better options for blackening steels like that than ferric. Suppose we can talk about it at Ashokan.
 
Quiet said:
This sort of situation has been posted about on both the Bark River Facebook pages and the DLT Insiders group after having happened to multiple knives and customers, and usually the response is Mike Stewart getting coked out of his mind and coming into the post and screaming in all caps about how MAGNACUT ISN'T TRUUUUUULY STAINLESS!!!!, and then proceeds to berate the customer as though Bark River's multiples failures on display is actually the customer's fault. Such a gem.
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Mike hasn’t changed in the last 20 years. That’s exactly what he did when I had a BR undergo catastrophic edge failure while doing the task for which Mike had been bragging it was ideally suited.

GeofS GeofS I hope the flitz does the trick. Polish the knife and then repeat what gave it the patina the first time. But check with DLT to see if, in case of repeated staining, they will still accept a return before use the flitz.

Frankly, I would have just asked for a return and refund. DLT has admitted that they sold knives with a known problem, and they should take responsibility for that. I have purchased from DLT in the past, but if they do things like this I’m not going to purchase from them again.
 
Richard338 said:
That looks like someone's "my first knife", not acceptable for a commercial product. I'd insist on returning it and not go near that company again.
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That’s hitting a little close to home (or garage in my case). My first knife looked way worse. My last one did too, but we’re not talking about that one.

Humor aside, contamination from used tooling is possible. I’ve seen it on stainless pipe and tubing with wire wheels and sanding disks. I’d return a stainless knife that looked like that unless you were stirring boiling tomato paste or something with it.
 
For what it's worth, my first and only magnacut knife was also their first magnacut release, the bushcraft scout. I have noticed that despite it's top notch performance, how razor sharp I was able to get it and how long it's kept an edge (I haven't had to sharpen it in the 2 years since I put my first edge on it, just light touch ups here and there) it has shown very slight patina with use, though nothing like what OP is seeing. That seems to be a fairly common issue in the BRK facebook page and I've had several arguments with Mike Stewart where he claims magnacut isn't truly stainless which is just maddening.

That being said, I think Peter's heat treat service knows how treat magnacut and bark river's previous steel mix ups have always been with a knife they've made in multiple steels, which AFAIK isn't the case with the Santoku. For that reason, and since I didn't observe the above mentioned awesome edge retention and toughness that one might expect from magnacut until after the factory edge went dull very quickly and I sharpened the knife myself, my own personal hypothesis as a certified non-metallurgist is that BRK may be overheating the surface of the knife in the grinding process after heat treatment (which is another thing they're known for doing, even though Mike insists it isn't possible I've had arguments with him about that as well) which could possibly lead the surface steel having worse stain resistance than it should.
 
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me2 said:
That’s hitting a little close to home (or garage in my case). My first knife looked way worse. My last one did too, but we’re not talking about that one.

Humor aside, contamination from used tooling is possible. I’ve seen it on stainless pipe and tubing with wire wheels and sanding disks. I’d return a stainless knife that looked like that unless you were stirring boiling tomato paste or something with it.
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Even if you were to stir boiling tomato paste with magnacut I doubt it would show signs of corrosion unless the steel had been contaminated with other steel. Spyderco uses magnacut on their Salt Series for a reason.
 
cbach8tw said:
Lost cause has a good point, if it was embedded steel would leave spots, not the full patina. Please someone if they know of a different result please share.
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The times I’ve seen it happen it’s pretty even. It’s not spotty. It just show wherever the contaminated sanding pad or wire wheel touched.
 
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wulfns said:
Careful! Polishing it might void the warranty/return policy because you modified it.

I'm kidding. But am I really?
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I mean DLT is already going to take the stance that they won't accept return on a used knife with patina.
 
tussery said:
I mean DLT is already going to take the stance that they won't accept return on a used knife with patina.
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Even when the patina is the result of a purchase being not as described? That would be some poor customer service right there.

"My widget broke while taking it out of the box."
"Sorry, we won't accept return on a broken widget."
 
r8shell said:
Even when the patina is the result of a purchase being not as described? That would be some poor customer service right there.

"My widget broke while taking it out of the box."
"Sorry, we won't accept return on a broken widget."
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Trust me I get it, but look at DLT's return policy it is exactly as I described. I get it DLT can take the loss, or hold the manufacturer responsible. I'm just saying most retailers are not going to take return of a used knife.
 
tussery said:
Trust me I get it, but look at DLT's return policy it is exactly as I described. I get it DLT can take the loss, or hold the manufacturer responsible. I'm just saying most retailers are not going to take return of a used knife.
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That’s not true if the knife is defective or mislabeled as another steel. I think even BladeHQ would accept it back after an email with pictures if the customer wanted to return it.
 
I ran a corrosion experiment a few years ago were I tested a bunch of different steels included low and high tempering. With high tempering a secondary hardening response happens that uses free chromium within the steel to form the secondary carbdies, across all steels tested this led to noticeably worse corrosion resistance.
 
Seedy Lot said:
I ran a corrosion experiment a few years ago were I tested a bunch of different steels included low and high tempering. With high tempering a secondary hardening response happens that uses free chromium within the steel to form the secondary carbdies, across all steels tested this led to noticeably worse corrosion resistance.
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You must be Psychic, I was Just thinking about your study that Larrin showed....that's a great comparison photo of yours. Shows alot. *should be posted

I'm glad you chimed in, and share your knowledge with us.
Thanks.
 
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