PM 2; S110v or K390

BMCGear

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I just got a Cruwear PM2 (not the micarta version) and I'm excited to see how it performs. Kudos to Spyderco for releasing production models in these great steels.
 

Lenny

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Could somebody please tell me about Cruwear and how it compares to other steels? I’m all about a PM 2 in Micarta.
 
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Could somebody please tell me about Cruwear and how it compares to other steels? I’m all about a PM 2 in Micarta.

I'm not an expert.
Cruwear is a favorite of mine.
It's Tool steel comparable to rex 45.
A little less edge retention than rex.
 

bdmicarta

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Could somebody please tell me about Cruwear and how it compares to other steels? I’m all about a PM 2 in Micarta.

Cruwear and K390 are both carbon steels that will patina, maybe rust, under certain conditions. They are pretty far off in terms of performance- Cruwear is prioritized for toughness but is not the best for edgeholding, K390 is prioritized for edge holding but isn't very tough. I think the properties of Cruwear are good for the PM2. I've read of several people who have broken blades in S110V and Maxamet- they would be better off with Cruwear.
 

johnnytoxin

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Cruwear and K390 are both carbon steels that will patina, maybe rust, under certain conditions. They are pretty far off in terms of performance- Cruwear is prioritized for toughness but is not the best for edgeholding, K390 is prioritized for edge holding but isn't very tough. I think the properties of Cruwear are good for the PM2. I've read of several people who have broken blades in S110V and Maxamet- they would be better off with Cruwear.

Id say you’re pretty off with your assessment of k390. It’s plenty tough.

 

BMCGear

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K390's toughness is fine. Mine is reground to somewhere between 8 - 10 thousandths behind the edge. Cut some cardboard and popped zip ties with it the other day and it didn't flinch.
 

yoko

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After my current running with maxamet is getting a bad reputation

This shit is fantabulous... factory it had flaking on first sharpening I couldn't replicate, I've dropped it on its tip no issues

Tomorrow I'll take it to my work where it'll see plenty of zip ties followed by having to be able to cut thin plastic/ paper non stop where I think it will excel

I'll get a k390 and cru pm2 to test next
 
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yoko

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Both. May be a while before the Micarta comes out. I have mine on preorder.

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Is that lagunitas??? Great drink !
 

The Mastiff

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When people say "give it a patina to protect against corrosion", that's a really vague statement. You can use a chemical agent or vinegar to promote the formation of black oxide on the blade surface, which is a stable oxide that gives a little bit of protection from rust (red oxide) to the steel underneath. Some "patinas" are not black oxide but just mild forms of oxidation that are not really protective.

Yeah, or you can just paste wax it before it patinas or rusts. I keep all mine looking just the same as my stainless knives. It takes about 3 or 4 minutes to coat the knife and another minute to wipe it off. It looks better than when it was new because the wax micropolishes stuff off you couldn't see and it gets shiny and pretty. It looks better to me than any rust/patina.
 
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