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Post by Deleted on Jan 29, 2009 23:13:44 GMT
I was thinking of making a mould to make a fibreglass commando knife maybe made out of normal chop mat, carbon fibre or if i have enough money kevlar. It would super light and just as strong as steele.
has anyone on this froum achieved or attempted anything like this?
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Post by Deleted on Jan 29, 2009 23:28:40 GMT
The only non-metal/cermic "knives" are for lettuce.
There are some "daggers" produced of synthetic materials. They do not cut, they are simply stabbing weapons. It can be "as strong as steel", but only structurally. It's ability to keep an edge/point are rather laughable.
The only real purpose of these are to evade detection via their nonmagnetic properties. For legal reasons, I suggest stopping where you are.
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Post by Deleted on Jan 30, 2009 13:54:29 GMT
I agree with HR (wow!!). Synth material daggers are just for stabbing.........besides mentioning fiberglass reminds me car kits that get broken very fast and very furious.............
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slav
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Post by slav on Jan 30, 2009 19:38:46 GMT
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Post by randomnobody on Jan 30, 2009 19:54:45 GMT
Carbon fiber laminated titanium core, eh? Hmm...
Ouch, their naginata one-off is $5k.
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Post by Deleted on Jan 30, 2009 22:23:16 GMT
Ugh.
I'll admit, Warren Thomas has some interesting ideas, but I wouldn't be caught dead with em.
Titanium = crappy edge-holding. Using it for a dive-knife is one thing, but for serious users?
And the carbon-fiber laminating? I know CF is strong, but AFAIK it's not shock-absorbent, abrasive-resistant, or particularly flexible.
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Post by Deleted on Jan 30, 2009 23:10:23 GMT
He should have used steel in there, would have been MUCH cooler.
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Post by Deleted on Feb 1, 2009 2:39:55 GMT
HR. Thanx for your comments, i thoroughly enjoyed you talking to me like im an idiot
My old boss did a test on a Carbon Fibre Aircraft Part, with Two layers of carbon fibre in A 10 day cured resin. he hit it with a sledge hammer and nothing happened. i was quite amazed
I think i could easily make and edge out of tiling grout.
It can be very sharp when thin enough, but just thick enough so it won't break. and if it does break its very easy to break it off and do it again.. a tin of grout is like 5$
A couple of years back, me and my father were ripping out tiles, he said ouch and i looked over and there was this deep gash in his finger that wen't close to the bone
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Post by 293master293 on Feb 1, 2009 2:45:40 GMT
HR. Thanx for your comments, i throughly enjoyed you talking to me like im an idiot. Yes, he does that. You might want to get used to it.
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Post by Deleted on Feb 1, 2009 3:14:12 GMT
HR. Thanx for your comments, i throughly enjoyed you talking to me like im an idiot My old boss did a test on a Carbon Fibre Aircraft Part, with Two layers of carbon fibre in A 10 day cured resin. he hit it with a sledge hammer and nothing happened. i was quite amazed I think i could easily make and edge out of tiling grout. It can be very sharp when thin enough, but just thick enough so it won't break. and if it does break its very easy to break it off and do it again.. a tin of grouts like 5$ A couple of years back, me and my father were ripping out tiles, he said ouch and i looked over and there was this deep gash in his finger that wen't close to the bone I wasn't talking to you like an idiot. I gave my advice on the subject. If you don't like it, piss off. If I was talking to you with the assumption that you're an idiot, I would've been lashing out, not pointing out the facts. Here's how it goes: Your idea? It's been done. If it was effective, you'd see it a LOT more, and it would be found on a consistent, production level. IT IS NOT. And grout? Are you kidding me? Your basis for using grout as a KNIFE EDGE is that your father cut his finger on some? Please tell me I read that wrong. Edited to add: NOW I'm talking to you, with a strong assumption that you're an idiot.
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Post by randomnobody on Feb 1, 2009 3:37:47 GMT
Okay, children, that's quite enough.
HR is mostly right on this but as usual he's gone and gotten carried away again.
I will say, though, that hitting something with a sledgehammer is just a wee bit (okay perhaps drastically) different than twisting/torquing it ala cutting. Sure it takes impact fine, on one side, but try to twist it and tell me what it does. Then whack the sharp side with a sledgehammer and submit your renewed thesis.
This part has me worried:
I'm not sure what tiling grout is...I assume the stuff that fills gaps between (cermic?) tiles? In other words, a sort of gluey clay-like thing that hardens a bit? I don't know if I'd consider that a worthwhile material for a knife edge...whether it gets sharp or not. Then you say, "thick enough so it won't break" and follow it with "if it does break" which is then followed by "easy to break off" and now I'm completely lost.
Ultimately, as has been said, it's been done, and didn't prove too practical. I'd not suggest doing it yourself, especially. All I can see is bits of sharp stuff flying everywhere when it ultimately explodes.
So let's step back, cool down, and try to let somebody fill us in on the scientific side of the matter and evaluate whether or not this is a bad idea. So far the consensus seems to be that it is. Myself, if Sam says it's a no-go, I'm ready to believe him.
But what the hell, you're going to try it anyway, so go for it, but keep us posted.
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Post by Deleted on Feb 1, 2009 3:48:03 GMT
HR, you don't know what your talking about, as youve obviously never ventured outside the house
and i wasn't basing it on that fact at all, i was demonstrating how sharp it can be.I was basing on using grout as it can easily be made sharp and isn't expensive, like fancy hardened steels.
please don't post in this topic again, people can see straight through your arrogent attitude and the fact you know little about synthetic fibre materials.
I only wanted to Know if anyone had done it before and what outcome theyve achieved, not some douche saying that the concept is just laughable..... my paper, my time.... there fore it would be my mistake...
and What i meant "easy to break off" was You can chip it off with a mallet and chisel or flat bladed screw driver if it ever got damaged some how , without damaging the carbon fibre, meaning you can replace it easily and it wouldn't cost and arm and a leg and a heap of time
and as for it twisting and flexing , once the Carbon fibre is cured in the mould with the right bracing, and its cured for a good 5-10 days depending on how much catalyst you added to the resin, it won't twist or warp very much, not enough to change its original design
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Post by randomnobody on Feb 1, 2009 3:52:03 GMT
*sigh* Is it over?
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Post by Deleted on Feb 1, 2009 3:56:33 GMT
sure, i saw this warren thomas's sight..... and any way... if grout dosn't work i can use car bog, if that dosn't work i can use Q-cels with resin and polystyrene.
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Marc Ridgeway
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Post by Marc Ridgeway on Feb 1, 2009 4:08:06 GMT
Quite right.... plenty enough... When we post our ideas for public consumption there will naturally be dissenting opinons. Unless one is trolling , it is ridiculous to be thin skinned when people disagree...
I for one have been around swords and airplanes all my life, and do not think that carbon fiber makes a cost efficient alternative....not to steel... CF properly done can make somewhat servicable blades ...at a much higher pricetag than steel....
At any rate open discourse is the point of public fora and anyone is free to state their opinion at anyy time , minus personal attacks
'muffin... I see you are new here... we have a zero tolerence for hostility here... so please tone it down, and don't take dissenting opinions personally.... no personal attacks... oh and welcome to SBG
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Post by randomnobody on Feb 1, 2009 4:09:08 GMT
So...do it and tell us how it goes, already? ? Bah, I'm going to bed.
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Post by Deleted on Feb 1, 2009 4:16:26 GMT
fair enough , but id only be making a knife maybe the size of my hand... wouldn't be that expensive.
thanks. i feel very welcomed already by that HR guy.
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Post by Deleted on Feb 1, 2009 4:18:20 GMT
So...do it and tell us how it goes, already? ? Bah, I'm going to bed. ok
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Marc Ridgeway
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Post by Marc Ridgeway on Feb 1, 2009 4:29:39 GMT
So...do it and tell us how it goes, already? ? Bah, I'm going to bed. ok yes, I too am interested...for a small knife , it maybe quite nice...at anyrate, I'd love to see it !!
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Post by Deleted on Feb 1, 2009 5:56:42 GMT
] thanks. i feel very welcomed already by that HR guy. Awwwww, poor little guy had his idea disagreed with. Need a hug? I didn't start out hostile. Though now that you've invited it, expect it. Oh, and I posted again in this thread. Going to throw a tantrum?
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