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Non-Metallic knives?

Discussion in 'General Knife Discussion' started by jeffsenpai, Feb 24, 2010.

  1. jeffsenpai

    jeffsenpai Gold Member Gold Member

    704
    Feb 24, 2010
    Hi!

    I came here to ask whether or not plastic/polymer bladed knives have any real use or utility, or are they merely a gimmick?

    Many times they are advertised as "letter-openers", but I have seen several that were aimed at self-defense purposes - do plastic blades retain a sharp edge, or are they possible to sharpen?

    here is a folder, all plastic/polymer:
    [​IMG]

    saw this on on http://www.gunnersecurity.com/knife-blackie-collins.html
    but there are many sites selling these and variants.
     
    Last edited: Feb 24, 2010
  2. EricV

    EricV Gold Member Gold Member Basic Member

    Nov 19, 2008
    Everything I've heard so far has pointed to them existing purely to get past metal detectors with little to no real edge retention, really just good for poking things (or people I suppose) Maybe someone else knows differently
     
  3. dangreco

    dangreco

    Nov 29, 2009
    Well, Ceramic knives aren't metal, and you can definately sharpen those to a fine edge with incredible retention, better than steel but chippable.
     
  4. twisted bits

    twisted bits

    152
    Nov 6, 2001
    Then there's the obsidian blade, and flint blade.
     
  5. cziv

    cziv

    Nov 24, 2005
    I had a CS shank years ago, made out of some super hard polymer and you could stab it through a couple of double layers of industrial packaging cardboard.

    You definitely could have buried it to the hilt into a zombie but it wouldn't whittle worth a da**! :)
     
  6. GIRLYmann

    GIRLYmann

    Nov 7, 2005
    and then there's the good old fashion wooden "stake" which is essentially what a plastic "letter opener" is...
    let's cut thru the chase (come on, plastic with a great rockwell hardness?) and see that's it's really all about the point which matters.
     
  7. vonhizzle

    vonhizzle

    215
    Feb 18, 2010
    So, useful for terrorists only... unless they have metal detectors where you go camping :D
     
  8. Haze

    Haze

    Aug 2, 2004
    I have made a few "knives" from G-10 and carbon fiber. Any knife made of G-10 or polimers of somesort is pretty much just a choory. They have rather poor cutting performance but they do have good stabbing ability. They are obviously very light and easy to carry as well. The Warren Thomas knives made with laminated materials are the best way around the problems while still using non ferrous metals for the most part (he does do steel blades as well as Ti). A folder made purely of polimer or G-10 is probably going to be of little use other than sitting on a desk or in a drawer. Fixed blades geard at stabbing are going to be way more usefull, something like the carbon fiber knives Mark Terrel makes.

    As mentioned though, there is the potential problem of who would want these knives and why. Any one who takes a knife like that into a sensitive area as a self defence tool is asking for big trouble. The other obvious problem would be people who take those knives in to a sensitive area looking for trouble.
     
  9. Dagon

    Dagon

    Nov 12, 2007
    Well, I have zero interest in self defense usage, but wouldn't such a plastic knife be capable enough for that kind of usage?
     
  10. DennisStrickland

    DennisStrickland Banned

    Jun 24, 2009
    i'll ride the road with Haze on this one. one moving in this direction could as well use flame hardened bois d'arc.personally i can see little use outside of terriosts.if a person really needs a undetected weapon i'd choose white vinegar in a nasal spray bottle . works for agressive dogs, i have 1st hand experience.
     
  11. wongKI

    wongKI

    Jul 9, 2009
    Ceramic knives. Victorinox is coming out with a ceramic kitchen knife soon.
     
  12. emperorwang

    emperorwang

    Nov 16, 2008
    they are for stabbing and getting past metal detectors. and that's it.
     
  13. cziv

    cziv

    Nov 24, 2005
    Good nugget DennisStrickland

    That's not what BLACKIE COLLINS says darnnit!

    What makes me think that BLACKIE is full of sh**? :D

    BTW, emperorwang - your avatar rocks - Semper Fi Bro!
     
  14. GWashington1732

    GWashington1732 Basic Member Basic Member

    Jun 20, 2009
    Plastic knife:
    [​IMG]
    Tactical too.
     
  15. cziv

    cziv

    Nov 24, 2005
    I better get my gold membership and post on the Knife Exchamge. My wife has two boxes full of those GWashington1732
     
  16. GWashington1732

    GWashington1732 Basic Member Basic Member

    Jun 20, 2009
    I just bought a box of 200 for $2.50. I'm gonna take them right outside and put them to the ultimate test. At under $.02 a piece who cares if I break a couple battoning through a log?:D
     
  17. cziv

    cziv

    Nov 24, 2005
    Don't forget to wear your hockey goalkeeper's mask! :D
     
  18. myesque

    myesque

    134
    Feb 9, 2010

    I bet you make it though! HAHA

    When you are all done, just melt them back together and you have a nice high quality blade again! Lets see you do that with a stupid steal knife. :confused:
     

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