The "Ask Nathan a Question" Thread

Nathan the Machinist said:
In light use it's probably better because of the higher wear resistance. In my normal use it's probably better because it seems to have better edge stability. In rough use it comes apart where D3V doesn't.

This is not just the case for my own special heat treat that I developed. I think people are going to be well served with Magnacut, with a quality heat treat, regardless of the maker.
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Very cool, looking forward to trying out my dek in magnacut!
 
Nathan the Machinist said:
Cruwear is coming
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That is good to hear. I think most of your models would be better off with Cru-Wear,4V and MagnaCut. I do not imagine majority of the CPK owners chopping cinder blocks with their knives. It might be more appealing (for people like me) if you make the knives thinner and harder with steels like Cru-Wear at 61-62 HRC or 4V at 63+ or with MagnaCut for those who wants absolute corrosion resistance. 3V would be better for anything from SDFK to Behemother size.
 
Nathan the Machinist said:
2023 is intended to be a year of CPK classics. We are dusting off the Shiv, a field knife, a dagger, a light chopper and the EDC.

There is also a fireman's breaching tool, a K20 sword and a folder in process that are going to roll over into 2023.
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This is very exciting to hear!

Will you offer magnacut on any of the classics? I have always dreamed of a stainless EDC
 
unwisefool said:
Someone school me on what makes Cruwear good compared to say magnacut or 3v.
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That's going to be an interesting discussion since when Larrin came out with it...one of it's major selling points was Cru-Wear like toughness in a stainless steel. Cru-Wear being less tough than 3V, and only slightly less corrosion resistant...but holding an edge longer.

Now, I don't know what fearless leader can and will do to optimize Cru-Wear...but that is the thumbnail picture as I have understood it.

I am looking forward to the answers as well.
 
unwisefool said:
Someone school me on what makes Cruwear good compared to say magnacut or 3v.
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Here is my gut feel .... Cruwear will be a little tougher than magnacut, and a little harder than 3V. But who knows what the grad master can do :)

Winter is heat-treatment optimization season I was told, so I'm hoping for some Cruwear and Magnacut BFKs (mules) early next year :)
 
Comparing Magna Cut to CPM 4V at the same hardness, the 4V was noticeably more durable, but had the same failure mode. Optimized 3V at the same hardness was considerably more durable than either and did not fail in a brittle fashion but took a dent rather than a fracture, after about three times more hits than the 4V and about six times more hits than the Magna cut. (I'm sorry, that isn't very scientifical, but I did not do this test for you or for publication, I did it for my own personal experience)

If I had to stake my life on it, or did not want to be bothered with nuisance corrosion, it would be Delta 3V all the way.

For a competition chopper, 4V. No question. (Those knuckleheads over on that other thread that are arguing about who designed what comp chopper and they're both talking about using 3V for a comp chopper, obviously don't know very much about comp choppers.)

For an application where I want gross edge stability similar to 4V and fantastic corrosion resistance, Magna cut. It's not exceptionally tough but I think it's still more durable than most stainless steels.

I think there is some potential in Cruwear that I have not yet tapped.
 
Blues said:
That's going to be an interesting discussion since when Larrin came out with it...one of it's major selling points was Cru-Wear like toughness in a stainless steel. Cru-Wear being less tough than 3V, and only slightly less corrosion resistant...but holding an edge longer.

Now, I don't know what fearless leader can and will do to optimize Cru-Wear...but that is the thumbnail picture as I have understood it.

I am looking forward to the answers as well.
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Now would that be edge holding, or retention?! 🤣🤣 Sorry.
 
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