sharpest edges?

[230grains]

She's a beauty. But I'm guessing rust is an issue with that type of finish.

Well it is a satin finish done on my belt grinder, not a porous bead blasted one, but sr77 rusts like crazy when not protected.

 

[ikiddp9]

There's a Japanese guy in you tube, "virtuovice" check out his videos on sharpening...

 

[Ankerson]

I just want to know how ban does that sand blasted satin look, I drool every time I see it.

Jim, I agree. I don't really think we can get any sharper unless the edges were chipped away atom by atom with a laser.

Yeah there is a point that it just can't get any sharper.

 

[DennisStrickland]

from the factory i go with spydie. from members: ankerson, knifenut1013, so-lo, & unit.
dennis

 

[230grains]

From the factory, to mimic Dennis, spyderco hands down.

 

[black mamba]

Right on with Spyderco, but Blackjack's convexed A2 comes incredibly sharp for factory done.

 

[Noctis3880]

I put a little extra something, something on that bad boy for you before I sent it back. :thumbup:

I just managed to get my Lionsteel SR-1 to pop, whittle, split, and tree-top(not sure if one or more or those are the same) my leg hairs. It does take a few tries, but I turned the edge up, put it under my hair(on my head, which is getting pretty long), and popped quite a few of them into the sink.

Edge was done up to 12000AO belt on my Work Sharp, then stropped on 1, 0.5, and 0.25 micron abrasives.

Aren't you proud of me?

 

[230grains]

How do you like that worksharp? Seems like a good little gadget if you want a belt sander convex edge without having to worry about holding the knife even. You should be hair popping at 1200, at 1 micron you should be hair splitting and at .25 micron you should be able to cut by just barely touching.

 

[Noctis3880]

How do you like that worksharp? Seems like a good little gadget if you want a belt sander convex edge without having to worry about holding the knife even. You should be hair popping at 1200, at 1 micron you should be hair splitting and at .25 micron you should be able to cut by just barely touching.

Hmm, seems like I still have a lot of practice to do then. I can barely get hair to whittle after the 0.5 Micron strop.

 

[harkamus]

So who do you think is making the sharpest edges these days?

That's easy. Resident forumite knifenut1013 makes the sharpest edges.

 

[me2]

I just want to know how ban does that sand blasted satin look, I drool every time I see it.

Jim, I agree. I don't really think we can get any sharper unless the edges were chipped away atom by atom with a laser.

FIB (focused ion beam) machining has been used for at least a decade for making STEM (scanning tunneling electron microscope) probes. Doing a knife on one might be asking a bit much though.

 

[Jason B.]

FIB (focused ion beam) machining has been used for at least a decade for making STEM (scanning tunneling electron microscope) probes. Doing a knife on one might be asking a bit much though.

Imagine a knife so sharp when you feel the edge with your finger, you finger falls off

 

[unit]

from the factory i go with spydie. from members: ankerson, knifenut1013, so-lo, & unit.
dennis

I am flattered.

Here is one I have been flogging around the web lately...I like this one a lot!

 

[marknett1]

That blade amazes me unit .. It's incredible. I can only imagine how much time you have in it ... :thumbup:

 

[230grains]

Hmm, seems like I still have a lot of practice to do then. I can barely get hair to whittle after the 0.5 Micron strop.

You might be jumping ahead too fast. I can shave arm hair (albeit, roughly) in the 200+ grit range if I knock off the burr.

 

[Noctis3880]

You might be jumping ahead too fast. I can shave arm hair (albeit, roughly) in the 200+ grit range if I knock off the burr.

Still confused about shaving sharp and hair popping sharp. When I run the blade along my leg, it's not like I have a lot of hairs popping off all along the way. Maybe just one hair per two passes. Though I can "feel" the edge scraping along the hairs, and I do end up having some (skin?) gather up along the edge and some small bits of hair.

As far as the belts are concerned, I'm pretty sure I'm moving along at a good pace at about 5-10 passes per side per belt, and the mirror polish is excellent. Last belt 12000AO ought to be between 2-3 microns according to the conversion table, so I typically move onto the 1 micron strop from there.

Thing I'm not clear on is how much to strop. So-Lo's video showed maybe 10-15 passes per side or less on what looked like CrO strop directly after a Spyderco Ultra-Fine ceramic(which I assume is about 3-4 microns).

 

[marknett1]

when i call sharp , My knives will remove all hair and a thin layer of dead skin in 1 pass

 

[230grains]

"shaving sharp" is what I consider a knife that when held against the skin like a razor and brought against hair, the hair is removed. "hair popping" is when with a little effort moving the knife against the hair/skin literally makes the hairs jump out of the way. Tree topping is a newer level of sharpeness, if you can tree top, you can probably split hair. Drag the blade through the hair without touching skin, the hair should cut free hanging. At .25 micron you should be able to tree top hair and split most except the finest hair. Don't always go by the bevel finish as a true testament of sharpeness. Remember, its the very edge of the bevel thats doing the cutting, the polished bevel decreases resistance, but the very edge is opening up the material. I can round the hell out of an edge while convexing it on a belt sander but shine it up like a mirror.

As far as stropping, I probably strop 100x per side per strop. So 200 total for the 1 micron, 200 for the .5 and so on. After 1 micron I don't notice any real difference in final sharpness after a few cuts as the .5 and .25 edges won't stay that sharp after the first piece of cardboard.

At 1 micron if done right you should have an edge sharper than you can imagine. Wittling hairs and being downright scary. At .25 we're well beyond the realm of useful and just showing off, but it is fun to do.

 

[unit]

That blade amazes me unit .. It's incredible. I can only imagine how much time you have in it ... :thumbup:

Thanks. I am truly flattered to even be mentioned among the names in this thread.

 

[Ankerson]

At 1 micron if done right you should have an edge sharper than you can imagine. Wittling hairs and being downright scary. At .25 we're well beyond the realm of useful and just showing off, but it is fun to do.

Exactly what I have found to be true also.

I can get them down less than .25 micron the way I do it and can whittle VERY fine hair like fuzzy sticks but that level of sharpness is gone the 1st time I cut anything with it.

I remember at a knife show I was at here Phillip Jones looked at my S90V Para 2 that I sharpened, all he could say was S**T......