KR Rasul - rope cutting test

Discussion in 'LionSteel knives' started by morganleah, Nov 8, 2011.

  1. morganleah

    morganleah

    67
    Aug 10, 2008
    The test was conducted in 2 different days because the arm could not stand the physical effort.
    The first day I did about 3000 while the other cuts I've made ​​on two days later. After a thousand cuts still have thrown in the towel and decided to stop the test because it seemed that the rope had no appreciable effect on the wire. In fact, after almost 4000 cuts, the Rasul has no difficulty in cutting the paper. The only uncertainty has it only to the curve that has rubbed several times on the chopping bamboo. The cutting board has also ruined a lot ...

    [​IMG]

    cuts have been made to creep even if the thickness of the rope (20mm) is not allowed to make the cut easily.
    at some point in the video I found a kind of plastic a little hard that I could not cut ... had to be a sort of junction of the inside ...
    The fact is that I've had a bunch so much and the wire was still able to do its job.
    Were enough to bring him razor 2 (and I say TWO) past a stick of ultrafine ceramic :cool:

    the video is a bit longish ... hour and eleven minutes ...

    http://www.youtube.com/watch?v=vYcvz8RfsCg&feature=youtu.be
     
  2. David Martin

    David Martin Moderator Moderator Gold Member

    Apr 7, 2008
    What type of steel and rope? How was the edge sharpened? How were the cuts made? DM
     
  3. morganleah

    morganleah

    67
    Aug 10, 2008
    Steel is Vanadis23 hardened at 63hrc
    the rope is a 20mm synthetic polyester
    the Rasul has been sharpened convex and the cuts are done for friction
     
  4. David Martin

    David Martin Moderator Moderator Gold Member

    Apr 7, 2008
    What is a friction cut? ie. Were the cuts made, push cut, draw cut, ect.. What was the grit of the final sharpening stone and the type? Thanks, DM
     
  5. Ravaillac

    Ravaillac

    Feb 14, 2005
    I think he means draw cut
     
  6. David Martin

    David Martin Moderator Moderator Gold Member

    Apr 7, 2008
    Ok. On a cutting board or held in what manner? DM
     
  7. morganleah

    morganleah

    67
    Aug 10, 2008
    The cutting board is bamboo and the rope was leaning on it.
    The thread that consumed the cutting board at the end of the test looks like this
    [​IMG]
     
  8. David Martin

    David Martin Moderator Moderator Gold Member

    Apr 7, 2008
    This appears to be more of a rocking push cut manner. ? DM
     
  9. Ravaillac

    Ravaillac

    Feb 14, 2005
    One test that would be interesting to see is lateral flexion: seeing how much load it would take and how much it would flex before breaking (assuming it breaks).
     
  10. morganleah

    morganleah

    67
    Aug 10, 2008
    @ david martin
    I did not understand what it means: "rocking push cut manner"
    lateral flexion will do it in some time ... must reach me an instrument to measure the force applied
     
  11. crafty

    crafty

    212
    Jan 15, 2010
    I really like the design. I'm curious how the handle fits larger hands (size large).
     
  12. DL Robin

    DL Robin Gold Member Gold Member

    587
    Dec 1, 2007
    Impressive so far, and I see they are available now in U.S. Still would like to see some lateral strength testing before pulling the trigger. Incoming Amature question: Wouldn't a blade w/ a 63 rockwell readily take a "set" when flexed or more likely to "snap"?
    Thanks
     
  13. morganleah

    morganleah

    67
    Aug 10, 2008

    We are adding to the catalog the spacers
     
  14. morganleah

    morganleah

    67
    Aug 10, 2008
    when the dynamometer comes again I'll know to give accurate info on the force applied before failure.
     
  15. Ravaillac

    Ravaillac

    Feb 14, 2005
    That's what I was asking for. With ordinary steel I'd say it would be likely to snap. Now "advanced" steel like Vanadis23 might work differently, sometimes that's what they are for.
     

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