Poll: CPK Dream Knife

What type of CPK would you be most excited about?

  • 5" Dagger Boot Knife

    Votes: 21 21.2%

  • 18" Machete

    Votes: 20 20.2%

  • 9" Shiv Classic

    Votes: 11 11.1%

  • 9" Chefs knife, thick enough to split light wood, thin enough to peel fruit

    Votes: 18 18.2%

  • Folding knife

    Votes: 44 44.4%

  • 20" CPK Notta-Katana

    Votes: 13 13.1%

  • 9" Chefs knife super thin edge

    Votes: 20 20.2%

  • 12" Machete

    Votes: 10 10.1%

  • 9" Rambo knife, saw on the back

    Votes: 12 12.1%

  • 12" American Style Kukri

    Votes: 16 16.2%
  • Total voters
    99
madcap_magician said:
Also I mean, I love Nathan and I trust him, but I am so deep in the hole for knife money I am gonna have to start picking and choosing what to get and accept I can't catch them all.

I have $2,094.00 in partially paid AIM Industrial invoices on more than $4,200 of pending-delivery knives. 😬
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😊 Just pokin' fun.
 
For me, the K20 is the most desirable, lust-worthy knife (sword) on the list. While there are many swords in this general/broad class, I think it will be unique in its combination of attributes- lightweight, modern design and materials, superior quality.

I would also love to see a dagger available. There was a lot of combined interest in this- in the recent 4 polls. An integral dagger would be another dream knife, but seems like unobtanium.
 
No one wants a pack tomahawk? Just me?

Decent size blade with either a spike or hammer. Can be thrown and carried easily. Think Pathfinder or Little Bird 2015 but Delta 3V.
 
Just do a collaboration with Spyderco and put a Delta 3V blade in the new Military 2 and sell thousands of them. It would be as hyped as the pending Manix 2 in 15V.
 
murat1983 said:
I am not sure what you are referring here. If possible, could you please elaborate on this?
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The best edge stability I have seen was in relatively hard W-2 tool steel. No chromium to speak of, not a lot of carbide, a straight clean plate martensite with a tad of vanadium in it. Best edge stability I've ever encountered.

When I was a kid I once made a knife out of mild steel. Dead soft mild steel was the worst edge stability I've ever encountered.

One of the challenges we face with some of the modern steels, higher alloys, lots of chrome, a ton of carbide, perhaps some slight imperfections in the compaction of the particle metallurgy and things like retained austenite reduce edge stability. You can have a high hardness steel with a ton of abrasion resistance from all of the carbide, but it still goes dull quickly in your use because of chipping and rolling mushy edge.

My company is based on making knives that stay sharp in rough use. Edge stability is very important in normal use. It is the ability of a narrow geometry to resist chipping and rolling and mushing in normal rough use. Edge stability, the ability to retain geometry, is often more important than wear resistance in its role in retaining the sharpness of a knife edge in normal use. Knives don't just go dull from abrasive wear. That is frequently a secondary mechanism.
 
Don Hanson is a W-2 guy. If I recall correctly, there were one or two Scandi makers that used it as well. I have one of Don's knives in W-2. (His "Blues Trapper").
 
Nathan the Machinist said:
The best edge stability I have seen was in relatively hard W-2 tool steel. No chromium to speak of, not a lot of carbide, a straight clean plate martensite with a tad of vanadium in it. Best edge stability I've ever encountered.

When I was a kid I once made a knife out of mild steel. Dead soft mild steel was the worst edge stability I've ever encountered.

One of the challenges we face with some of the modern steels, higher alloys, lots of chrome, a ton of carbide, perhaps some slight imperfections in the compaction of the particle metallurgy and things like retained austenite reduce edge stability. You can have a high hardness steel with a ton of abrasion resistance from all of the carbide, but it still goes dull quickly in your use because of chipping and rolling mushy edge.

My company is based on making knives that stay sharp in rough use. Edge stability is very important in normal use. It is the ability of a narrow geometry to resist chipping and rolling and mushing in normal rough use. Edge stability, the ability to retain geometry, is often more important than wear resistance in its role in retaining the sharpness of a knife edge in normal use. Knives don't just go dull from abrasive wear. That is frequently a secondary mechanism.
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Thanks for the reply.

I am afraid, perhaps, I got misunderstood in my message as your reply is pretty much inline with what I was thinking (and hopefully saying?). And that's why I have suggested that you can beat the soft steels in a machete application with the increased edge stability as a result of your processes and steel selections. So, it is still not clear to me what aspect of my initial message come across as I was defending higher toughness but lower edge stability steels in machete use.

The reason I recommended CPM 1V is because as you suggested we do not need much wear retention but increased stability in a machete. CPM1V has 3 % vanadium carbide (no chromium carbide). For reference CPM 3V has 5 %. Also, the carbide sizes in CPM1V is significantly smaller compared to 3V. You can see the micrographs in https://knifesteelnerds.com/2019/06/03/the-history-of-3v-cru-wear-and-z-tuff-steel/

I expect that you can get even better edge stability with 1V compared to 3V. At 61-62 HRC CPM 1V seems to has twice the toughness of 3V https://knifesteelnerds.com/2021/01/25/matrix-steels-yxr7-cpm-1v-caldie-and-more/ Of course you might not necesarily need to go to that hardness in a machete (perhaps you might want to for increased the edge stability if it does take the abuse?) but it is a good indicator showing how tough 1V is at high hardness indicating a huge potential for edge stability which is great as long as you do not need much of a wear resistance. As for another reference, the wear resistance of 1V is comparable even or might be even better to AEBL according to knifesteelnerds tests. So it is not all that bad.
 
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