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cpm3v wow

S

shawn242010

Joined
Sep 14, 2013
Messages
28
I recently bought a north star edc from brkt in cpm3v steel.I only had a2 until I got it and loved a2 for its easy sharpening.I had actually avoided certain models because they only can in 3v.but I just loved the shape and style of that knife .To my dissapointmeant the 3v came a bit dull which has never happened to me with any of my brkts.So I tried to sharpen it with no luck.I put it in my draw and there it sat,until today when I got out the wet dry paper and strop .I really concentrated on angle pressure even strokes and such.It took me the better part of three hours but holey crap this thing is silly sharp now .I tree toped a hair on my leg for the first time ever. Wasn't even attempting to tree top I was just moving the blade into position to try and shave a little to test it and it cut a hair in had while still being a quarter inch above my leg.I was extactic. I am certainly gonna consider more blades in this steel now.Has anyone else had this much trouble getting a sharp edge on this steel 3 hours is a while even though I do enjoy sharpening 3 hours is a while
 
Enjoy. I have had similar experiences with their 3v. Even though they say they do not come with a microbevel, call it what you want, but I have always had to rough the shoulders down a bit on the 3V knives (a few of the A2, but not as many as 3V) to get them to perform decent. After that, and they are closer to a "zero" degree convex, they are much easier for me to sharpen and maintain.
 
"tree topping" experience. It's so cool the first time ;-) Very cool when new benchmarks are achieved, a nice reward for diligent effort. Thanks for posting. :-)
 
I've bee . Wondering about the zero convex thing .I am fairly new to this but at first I was under the impression that brkt knives were zero ground convex blades .Then I saw in a post on a knife forum MR Stewert say they do not convex to sharp.So I have been thinking lately that my brkt blades are convex ground with a convex edge.If they are convex ground with a convex edge how wide should that edge be cause the ones I have had for a year or more and have been sharpens are at least an eight of an inch wide ,but when I recently got two new Brkts they certainly look zero ground convex to me?I have never had a performance issue with one new or old just wondering why the. Ones I sharpen look so much different from a new one?
 
3 hours? What kind of paper were you using? Mine sharpen up in 3 min on DMT or silicone carbide, but I'm not using a convex edge either.
 
3V is IMO absolutely fantastic steel. For me, it checks all the right boxes. It is amazingly tough, holds on edge plenty well, and is easy to sharpen.

I have never found it to be difficult at all to sharpen 3V to a very sharp edge. It isn't overflowing with Vanadium like the S90V and S125V's are. It really will not micro chip due to its toughness, so I have found that a few passes on the grey/ brown ceramic sticks on my Sharpmaker bring it right back to life.

I have seen Bark Rivers with some incredibly thick edges. Tons of metal behind the primary edge. Perhaps you were having to remove some of that to get the clean, sharp edge you were looking for?

Shouldn't take that long with 3V. The carbide volume isn't there.
 
@shawn242010
It sounds like when you are sharpening, you are adding a secondary-bevel that is effectively steeper than the factory edge (changing from a zero grind to a totally differing performance). Good if that's your goal, otherwise not as it's totally changing the blade geometry.

Bark River knives I have seen come in all varieties if bevels. Full convex bevel all the way to cutting edge (sometimes fat sometimes thin near cutting edge). Sometimes a micro-bevel on one or both sides, sometimes a secondary (wider than a micro-bevel). In general it is my impression folks expect a Bark River to be full convex to the cutting edge, am I for one would be disappointed to receive in with a micro-bevel or a secondary as I would like to be the one to determine if "I" feel the edge needs more structure/strength for intended usage. Much easier to steepen up an edge, than to thin one out.

The edge geometry typically should be dictated by the intended usage if the tool.
 
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I was just using some wet dry sand paper i got from my local auto parts store.I usually get it at the same place .I have noticed though that the last time i got some it just seems to be of a lesser quality than it used to be,thinner than before ,would get worn out from one blade.When before it would do more than one.I do not know weather its a diffrent brand or the same brand changed theirs.It could b what Vegas Blade says and it had a thick edge and i just had to remove that metal.I sharpen all my convex edges the same way with sand paper on my strop idk if i do it correctly or not but it has always worked for me.Sometimes i get a blade that gives me grief but i keep at it and usually get it done i dont know if some of the experts around here would say its the right way but most of my knives shave hair or paper with ease and preform how id like.Is there a better type of wet dry? or some other way to sharpen convex edges mabey water stones?
 
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