Question Edge 2000 and 440C

BG42EDGE

BG42EDGE

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Lately a few people have opined that 440C with Buck's current edge specs would be an improvement over original Buck 440C.

So......the question that comes to mind is ..... if we send an old 440C knife in to Buck for sharpening--will it come back with Edge 2000?

Or what?

I've searched without success for a precise and complete definition of Edge 2000.

I understand that the specs are 13 to 16 degrees, but beyond that I'm in the dark......there must be more to it than that.

Anybody got help?
 
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fwiw
 
Thanks, gentlemen.

I tend to refer to the angle of one side of the edge, that's where I get the 13 to 16 degrees that I mentioned.

I'm concluding then.......that an old 440C blade could not get the true Edge 2000 treatment without reshaping the blade a lot higher up away from the edge.

Anybody know if all blades (meaning old and new) sent in for sharpening today are done the same way with the same equipment and edge angle or are old ones done differently?
 
I've only ever sent one old 2 dot in for a clean up,i asked Joe if the edge2k could be added to the old 440 c and his reply was NO.Thats all i can remember,i've never used that 2 dot since i got it back from buck,but it appears to have a edge like the nib 2 dots i own.I like a good convex edge on the 440 c,it seems to cut forever and is a very tough edge as well.
 
To my eye it's not just the edge that is different on the newer blades, but the grind itself seems thinner. From my understanding, and I could very well be wrong, thinner blades slice better and longer than thicker ones.
 
Razor and Sitf......what you say sounds logical and correct.

Joe hasn't posted for what seems like a couple of months.......I suppose he's very busy with his work.

It would be nice to get some info on how they sharpen the older vs. Edge 2000 knives that we send in.
 
I am watching this thread with great interest, as I have a few 2 dots to send in.
 
I agree the hollow grind is different from what I remember. I also seem to remember when touring that the final sharpening is done free hand, so maybe the hollow grind affects the final angle ?
 
It would be great to see pictures like the ones Pack Rat posted above that would show the differences in blade geometry ABOVE the edge.

That would help me get the bigger picture.

Maybe it would also explain why they can't put the Edge 2000 on the older knives we send in?

Is it really a fact that they CAN'T do it?

I want to know if it's impossible or just difficult or........do they just refuse to do it for their own unstated reasons?
 
jarheadz28 said:
I agree the hollow grind is different from what I remember. I also seem to remember when touring that the final sharpening is done free hand, so maybe the hollow grind affects the final angle ?
Click to expand...

Is it actual final sharpening or just a final polish and touch-up with softer tools?
 
I should have specified more. I think the final sharpening angle is set by a person on a belt sander. I am just speculating though.
 
I guess there's a few employees around these parts that are better at answering or perhaps it is a secret :)
 
To me, doesn't matter. What ever knife I am using, when it gets dull, I put it in the Lansky clamp system and use the 25 degree slot. Will work it to my level of sharpness and then strop it on and old leather belt. Rarely will one not shave hair, and that is all I require.

I have no dots, one liners, two liners, three liners, and post 86 stamps. Don't care about the edge as long as I can meet my requirement of sharpness. I just put one back on the Lansky if I didn't get it right the first time. Have yet to fail to get one shaving sharp.

So I just never really cared about the e2x much.
 
Yeah Buck Knives have always been sharp and sharpenable. All of the steels they've offered, heat treated and ground :)
Sharpening a quality knife is rewarding
 
Buck's current 420HC outperformed 440c in CATRA tests, I believe because the larger carbides in 440C tear out faster. Not to mention, sharpening Buck's old 440C blades was a b*itch in my experience. There's more to edges than just angles.
 
sitflyer said:
To my eye it's not just the edge that is different on the newer blades, but the grind itself seems thinner. From my understanding, and I could very well be wrong, thinner blades slice better and longer than thicker ones.
Click to expand...

Bingo. It isn't just the edge angle. It's the entire profile. Buck always used a hollow grind profile. The "edge 2000" grind is much more hollow. The blade thickness just above the primary bevel is thinner.

Alberta Ed said:
Buck's current 420HC outperformed 440c in CATRA tests, I believe because the larger carbides in 440C tear out faster. Not to mention, sharpening Buck's old 440C blades was a b*itch in my experience. There's more to edges than just angles.
Click to expand...

The post from CJ Buck was that, 420HC ground with an "edge 2000" profile outperformed BG42 with an old style profile. The further comment was that a BG42 blade with edge 2000 profile far outperformed 420HC with the same profile.
http://www.bladeforums.com/forums/showthread.php/127499-CATRA-Edge-Testing-Results

At the end of the day, edge geometry and blade profile are more important than alloy. But, if you give 440C the same profile as 420HC, then the 440C will perform best.
There is no question that a blade produced from ATS-34 with E2K will perform at a higher level than a blade produced from 420HC with E2K.
Click to expand...
 
Anyone using a Buck that has the 440c is missing out until they re-profile the edge into a full convex grind,i did one using different grits of sandpaper and a mouse pad,then i went to the leather strop loaded with compound and its given me a edge that just works through any chore and stays very sharp a long time,longer than the regular type of edge on a 110 thats for sure.Convex edges take a bit of work,but the results i've had are not even on the same page as a flat ground or hollow ground edge..
 
So........I'm having trouble understanding what you did to that old blade. Any info links that would make it easy to visualize?

Also.......it occurs to me that I could be skeptical about the virtues of 440C and Edge 2000.

Maybe such a thin cutting edge would not work with 440C?

It occurs to me that maybe Buck won't do it....not because they couldn't......but because they tried it and things didn't work out so well.

Anxiety.
 
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