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Video - How to sharpen knife to "whittling hair" sharp.

Discussion in 'Maintenance, Tinkering & Embellishment' started by nozh2002, Apr 16, 2008.

  1. Morrow

    Morrow Don't make this weird Staff Member Super Mod

    Apr 11, 2007
    cool vids. what angle is your base?
     
  2. nozh2002

    nozh2002 Banned BANNED

    Jun 9, 2003
    15 degree. So edge will be 30.

    Thanks, Vassili.
     
  3. theonew

    theonew

    May 16, 2006
    Vassili,

    I think its really cool that you took the time to make those. I use a different approach, which probably isn't as efficient, but there is no doubt in my mind that if people follow your instructions they will end up with a scary sharp knife. Well done, nice contribution
     
  4. chanwahyaoh

    chanwahyaoh

    459
    Mar 15, 2008
    Great videos! Thanks for sharing these.
     
  5. David in FL

    David in FL

    90
    Feb 14, 2008
    Ok, I'm exactly the type of guy you made that for. Couple of dumb questions.....

    Those were diamond stones, right? Couldn't see on the video's, what grits did you progress through?

    How did you make the strop?

    If I'm sharpening a blade without any curve to it, like a wharcliffe, I just move the blade straight up the ramp, right?

    I really like the idea of using the ramp and just keeping the blade parallel to the table top. That has to be easier to maintain a consistent angle!

    Thanks for the help!
     
  6. nozh2002

    nozh2002 Banned BANNED

    Jun 9, 2003
    Each video has comment where I write about grits - it is DMT Extra Extra Coarse, Coarse and Extra fine.

    Here more about stand-base

    http://www.youtube.com/watch?v=EP9tII6Tp7s

    and here some details of leather tool

    http://www.youtube.com/watch?v=3WY8rhecws8

    For straight edge you move it straight - much easy.

    Thanks, Vassili.
     
  7. thesurefire

    thesurefire

    39
    Jul 15, 2007
    Vassili, of all the things I've seen posted on bladeforums, I've found this to be the most helpful, thank you.
     
  8. Guyon

    Guyon Biscuit Whisperer Staff Member Super Mod Gold Member

    Mar 15, 2000
    Great set of vids. :thumbup:
     
  9. David in FL

    David in FL

    90
    Feb 14, 2008
    Got it, didn't know about the additional comments.....I guess I'm not very youtube savvy!

    I'm going to build a ramp today..... Thanks!
     
  10. SaguaroKid

    SaguaroKid

    296
    Jan 20, 2008
    Wonderful and thanks for posting!!!
     
  11. kelbro

    kelbro

    245
    Mar 13, 2008
    Nice job. Should help a lot of folks.
     
  12. JurT

    JurT

    Feb 4, 2006
    Great vids! That edge looks scary sharp:eek:
     
  13. Bucktool_02

    Bucktool_02

    144
    Nov 11, 2005
    Thanks for your videos, Vassili. Without them I wouldn't have been able to get to hair splitting. I'm now trying to get to hair whittling.

    What I love about your videos is the silence. These informative pictures can make sense on any continent. The information it conveys crosses every language barrier. The only thing I can hear is a ticking clock, which is a nice touch--so I know my audio is still working.
     
  14. nozh2002

    nozh2002 Banned BANNED

    Jun 9, 2003
    Well, I do not think many will be able to understand my speaking English and I also target Russian audience as well. So let it be like 100 years old movies... everybody will understand.

    Thanks, Vassili.
     
  15. bobofish

    bobofish

    Nov 22, 2006
    Very interesting, thanks for these.

    On a related note, I hope this isn't too stupid, but these super sharp edges will not last very long, right? In other words, is this a challenge to yourself and your knife, or will you be able to cut, let's say a dozen tomatoes with little to no pressure?
     
  16. Dog of War

    Dog of War

    Sep 4, 2004
    Nice work, Vassili. Particularly with the stropping, I think many will find your videos useful, studying both the angle and pressure being used ... IMO much, much better than the technique HandAmerican (for example) recommends, which stands a very good chance of actually dulling the edge.
     
  17. nozh2002

    nozh2002 Banned BANNED

    Jun 9, 2003
    Of course hair whittling will not remain for long time - this is more like criteria to see that edge is not rolled (most people doing when polishing) and it is not wire edge.

    But it will stay sharp for much longer then so called "working edge" - it will take some time for it to get to the same dullness as "working edge" has initially and then from that зщште they will dull side by side same way. No really magic here of course.

    Again if you are not able to whittle hair - your edge is rolled out (dulled by polishing) or you have burr not removed. Usually people can not see it and this is why we have all those conclusion about it not staying sharp for long (wire edge) or about not aggressive cut (rolled edge) etc... Not too many able to sharpen edge to this point, but everybody ready to give you advise and raze opinion...

    Thanks, Vassili.
     
  18. bobofish

    bobofish

    Nov 22, 2006
    But if you can roll the edge while polishing, won't you roll the edge while cutting things? I'm not criticizing, I'm genuinely curious.
     
  19. nozh2002

    nozh2002 Banned BANNED

    Jun 9, 2003
    Of course this is exactly what happen when you use knife. And this is expected and this is happen to all kind of edge. However rolling out edge on leather loaded with chromium carbide or diamond powder is bit faster then when you are cutting.

    Now let not mix different thing. After let say Extra Fine DMT you have edge as fine as 9 micron abrasive on this stone. Then if you polish it wrong - you will dull this edge rolling it out and it will be equal to let say - 20 cuts of manila rope or may be as good as like 40 microns edge but toothless. So it will stay behind on 20 cuts or bring your ede back to previous stone - Coarse DMT (just for example).

    If you actually sharpen and not roll it out it will be edge as fine as 0.2 microns. Which will require 20 manila rope cuts to bring it to same level as 40 microns edge.

    So if you have not roll edge - you are 20 cuts ahead, if you will roll out edge - you are 20 cuts behind.

    This may be bit simplistic and did not count tooth which any edge has after proper sharpening and burr removed, but with some degree of approcsimation this is what happening IMHO.

    Thanks, Vassili.
     

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