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  1. finnish is offline

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    Jun 2012
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    1

    Posted On:
    6/23/2012 12:09pm

    Bullshido Newbie
     Style: selfdefence

    --
    Hell yeah! Hell no!

    Teflon coated knifes

    Hello all of you who know better,

    It's about "teflon" coated fighting knives.

    I am intrigued by those suddenly serious sounding stories and rumours I've heard that the fluoropolymer coating is applied on a combat blade for two main reasons:

    1: Less friction than bare steel with body tissue, easier in, easier out even with some bones on the way.
    2: Less neural "twitching" during the stab due to the fact that teflon coating is electrically insulating, wouldn't shortcut nerves into erratic muscle movement that much as with bare steel.

    The very tip and the very edge of the knife would certainly be bare steel and sharp.

    Honestly, how it is for real? I myself can't even guess.
  2. wetware is offline

    Senior Member

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    May 2007
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    Posted On:
    6/23/2012 12:46pm


     Style: BJJ/MT

    --
    Hell yeah! Hell no!
    We'll assume blood counts a lubricated environment. In such an environment steel has a friction coefficient of 0.16 and teflon has a friction coefficient of 0.04. What this means is that force against the forward movement due to friction on a teflon coated surface is four times less than untreated steel.

    Now really... the force opposing the movement of the knife due to friction is pretty much negligible. Even with untreated steel.
  3. slamdunc is online now
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    Extraordinarily Ordinary

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    Posted On:
    6/23/2012 2:32pm

    supporting member
     Style: TKD, CMA & American Kenpo

    --
    Hell yeah! Hell no!
    Quote Originally Posted by wetware View Post
    What this means is that force against the forward movement due to friction on a teflon coated surface is four times less than untreated steel.
    So technically, point 1 is true, even though you would need instruments to measure it.
    We probably wouldn't need a neurologist to confirm that point 2 is total crap.


  4. mike321 is online now

    Senior Member

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    Posted On:
    6/23/2012 3:37pm


     Style: kenpo, Wrestling

    --
    Hell yeah! Hell no!
    I would avoid the Teflon since it scratches off metal very easily. An exposed scratch can be worse for corrosion than an uncoated surface. Look at Teflon cookware after somebody cooks with metal utensils in it.
  5. hungryjoe is online now
    hungryjoe's Avatar

    Light Heavyweight

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    Posted On:
    6/23/2012 7:10pm

    supporting member
     Style: judo hiatus

    --
    Hell yeah! Hell no!
    Just say no to teflon. As pointed out by mike321, it scratches off easily.

    Additionally, if you're like me, you keep a keen edge on your knives. You don't want teflon loading up you sharpening stones/hones.

    Who cares about 'twitching'? If you want to do some real damage you're going to pierce, twist and pull on the way out. Bone obstruction is another matter.

    I know it sounds kind of evil, but we're taking life or death situations.
  6. jspeedy is online now
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    Senior Member

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    Orlando, FL
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    Posted On:
    6/24/2012 3:18am


     Style: FMA

    --
    Hell yeah! Hell no!
    People have been stabbing and chopping each other for thousands of years without teflon. So I question the need for a teflon blade.
  7. Wounded Ronin is offline
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    ...is THE PENETRATOR

    Join Date
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    Posted On:
    6/24/2012 9:05am

    supporting member
     Style: German longsword, .45 ACP

    --
    Hell yeah! Hell no!
    Teflon would be a gimmick.
    Best Vietnam War music video I've ever seen put together by a vet: https://www.youtube.com/watch?v=oDY8raKsdfg
  8. 3moose1 is offline
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    United States Marine.

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    San Clemente
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    Posted On:
    7/04/2012 9:09am

    Join us... or die
     Style: MCMAP, BJJ

    --
    Hell yeah! Hell no!
    But it keeps things from sticking!

    PROOF that I'm not a completely useless poster:
    http://www.bullshido.net/forums/show...0&postcount=58


    Quote Originally Posted by Cy Q. Faunce
    3moose1 is correct. Sig THAT, you fucker.

    Quote Originally Posted by sochin101 View Post
    I went out with a delightful young woman who was on a regimen of pills that made her taste of burned onions.
    That is not conducive to passionate cunnilingus, my friend, let me assure you.
    Quote Originally Posted by HappyOldGuy View Post
    I agree with moosey
  9. dwkfym is offline
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    Yours truly

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    Posted On:
    7/04/2012 10:18am

    Business Class Supporting Member
     PDS Rifles Style: Univ. Florida Kickboxing

    --
    Hell yeah! Hell no!
    Quote Originally Posted by 3moose1 View Post
    But it keeps things from sticking!
    It also gives your opponents cancer. +1 poison attack
    www.pdsrifles.com Add us on facebook!
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  10. Chili Pepper is online now
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    Senior Member

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    Ottawa, Ontario, Canada
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    Posted On:
    7/04/2012 10:25am


     Style: Siling Labuyo Arnis

    1
    Hell yeah! Hell no!
    Quote Originally Posted by 3moose1 View Post
    But it keeps things from sticking!
    Very helpful if you're attacked by the Lasagna People From Mars.
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