rebeveling recurved blades

A

a1boy

Joined
May 18, 2010
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I see DMT has the wave sharpener with a convex and concave shape, this would work pretty good for sharpening a recurved blade but if I want to really reprofile one I'd want ideally something like the wave in extra coarse or coarse but it's only offered in fine grits :thumbdn:
I know I could use sandpaper folded over a curved surface for refining the edge but for reprofiling with something really coarse what do you people use? A sharpening stone you've shaped on the pavement?
 
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a1boy said:
I see DMT has the wave sharpener with a convex and concave shape, this would work pretty good for sharpening a recurved blade but if I want to really reprofile one I'd want ideally something like the wave in extra coarse or coarse but it's only offered in fine grits :thumbdn:
I know I could use sandpaper folded over a curved surface for refining the edge but for reprofiling with something really coarse what do you people use? A sharpening stone you've shaped on the pavement?
Click to expand...

Very simple. Use really coarse sandpaper (wet/dry type from 3M or Norton; it works very well). Might try 220 grit, maybe even lower for initial heavy metal removal. Then, move up the grit chain (220/320/400/600/etc.).

It really does work. I've convexed (i.e., reprofiled) a bunch of v-grind blades this way, in several steels, including 440C, D2 and S30V. It's my favorite method.
 
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Sorry I think you misunderstood me,
I'm not talking about reprofiling as in changing edge geometry,
but rather lowering the v grinds angle on a recurved shaped blade, like on the benchmade 630 skirmish, or karambits. So flat stones wouldn't help at getting inside the curve of the blade
 
a1boy said:
Sorry I think you misunderstood me,
I'm not talking about reprofiling as in changing edge geometry,
but rather lowering the v grinds angle on a recurved shaped blade, like on the benchmade 630 skirmish, or karambits. So flat stones wouldn't help at getting inside the curve of the blade
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Still not a problem with the sandpaper. Just lay it on a curved hard surface, such as a piece of pvc pipe, broom handle, dowel, Pringle's can, etc. It'll handle the recurve (and the V-grind) just fine.

I didn't intend to assume you wanted to convex. It's just that I've been using the sandpaper (on leather backing) for that. It works equally well on V-grinds or convex. The backing for it (hard or soft) makes the difference between the two types.
 
ok cool so I'll just use sandpaper for all of it, I'll go give it a try.

I guess reshaping sharpening stones would be my only other option if I didn't want to keep buying sandpaper.
 
It was a bit slow and painful but it worked, I ended up rounding the edge of a plank of wood and using spring clamps to hold the sandpaper I'd wrapped around the edge of the wood.:thumbup:
 
a1boy said:
It was a bit slow and painful but it worked, I ended up rounding the edge of a plank of wood and using spring clamps to hold the sandpaper I'd wrapped around the edge of the wood.:thumbup:
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Cool. :thumbup:

It's always good to see 'improvisation' in finding ways to get the job done. 'Slow and painful' isn't always a bad thing, so far as I'm concerned, because it gets my mind workin' on finding other ways to do it, the next time. That makes it fun (or, even more so). :)
 
This reprofiling thing had me confused.

I think the term you're wanting is rebeveling.

I was going to address this, but you're wanting an entirely different thing than I was going to suggest.
 
psycho78 said:
This reprofiling thing had me confused.

I think the term you're wanting is rebeveling.

I was going to address this, but you're wanting an entirely different thing than I was going to suggest.
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Yeah sorry I think it is rebeveling I was talking about, changing the bevels angle not changing the shape of the bevel (convex, V, etc)
Sorry I'll try and fix the title
 
Yeah, I'm surprised that there isn't a mainstream recurve sharpener out there by now.
 
a1boy said:
Yeah sorry I think it is rebeveling I was talking about, changing the bevels angle not changing the shape of the bevel (convex, V, etc)
Sorry I'll try and fix the title
Click to expand...

It's ok. Reprofiling to me is changing the profile of the blade, as in the blade's shape. Has nothing to do with the bevels. You don't have to change it. The terminology is accepted the way you meant it over in this part of the forum. I think there's been some heated debate if I remember correctly.
 
Talking about rebeveling a recurve. The edge pro and I had no problems getting this ZT 301 down to 36 degrees inclusive.

zt301mirror.jpg
[/URL] Uploaded with ImageShack.us[/IMG]
 
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