D2 toothy?

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May 24, 2009
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So, I got a bone collector 15030 the other day and just got around to sharpening it. Due to the low profile grind benchmade does, I decided to to a 30 dia on it. Long story short, it won't cut clean through receipt or computer paper (my normal tests...I have found that to be enough for my daily tasks) but it barely caught my hand it it bled like a mofo. Is that common of D2 at that angle to be so toothy and grabby? If not, any help would be much appreciated. I even tried a micro bevel, but that only seems to dull it.

Steve
 
D2 can be about as toothy or as polished as one chooses to make it. It takes a while to get it polished, because of the abundant chromium carbides in the steel. They're pretty hard, but will still polish up nicely using diamond, silicon carbide or aluminum oxide abrasives. I like setting bevels using diamond on this steel, but then I follow that with silicon carbide wet/dry sandpaper, for refining and/or polishing up through 2000 grit or higher. As the edge becomes finer, care needs to be taken to proceed more slowly (lightening pressure), to refine the edge as much as possible without rounding or blunting it. At that slower & lighter pace, the carbides will be a bigger factor, and it can seem like measurable progress comes much more slowly, than with simpler steels. Demands a good bit of patience, in taking it that far, and that was my biggest impression of the steel. But it can definitely get there.

BTW, the first blade in D2 that I re-bevelled (using a DMT diamond in 'Fine' grit) also bit me quite viciously, while working the edge on that diamond hone. This steel can get wickedly sharp at almost any grit level, and that's something that impresses me about it. At finer/polished finishes, it will give up a lot of that 'tooth', but will instead get shaving-sharp with some TLC, and hold that edge a good while.


David
 
So, I got a bone collector 15030 the other day and just got around to sharpening it. Due to the low profile grind benchmade does, I decided to to a 30 dia on it. Long story short, it won't cut clean through receipt or computer paper (my normal tests...I have found that to be enough for my daily tasks) but it barely caught my hand it it bled like a mofo. Is that common of D2 at that angle to be so toothy and grabby? If not, any help would be much appreciated. I even tried a micro bevel, but that only seems to dull it.

Steve

My BK24 is similar. I leave it at about a 600 grit edge and it holds that for a loong time. It can be worked finer, but in my experience this doesn't make best use of the large carbides and edge longevity will suffer somewhat. I work the edge down enough that it can do some pressure cutting, but it really excels when drawn into a cut. Makes for an almost raspy edge - just three finger sticky but if you go over a certain pressure threshold it changes character in an instant and cuts with serious authority.
 
Sounds like you have a burr on the edge. You can remove it through a few stops on a leather belt.
 
Sounds like you have a burr on the edge. You can remove it through a few stops on a leather belt.

Yup, probably a burr. I have one, takes a nice polished edge...

fdc334785fa74340215509fcdee989cb_zps972343cd.jpg


(Also got rid of the "hump" on the spine). :)
 
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