Ultimate spearo knife designed.....

[jimdoe2you]

Hi everyone,

I just started talking with one of the world's leading knife manufacturers to produce a very specific knife for spearfishing. I have some ideas and am going to layout and render a design on AutoCAD for them to work from.

Now, I have in my mind what I believe is best regarding size and shape of both the blade and handle, but in keeping an open mind about this I feel it is important to gather input from everyone.

Thanks in advance,

Jim

 

[Murat]

1-Hydrodynamic design---very slim handle or skeleton style
2-Good quality highly elastic adjustable straps for mounting on upper arm or inner quadriceps
3-good sheaths which will allow easy drawing with one hand and quickly in the case of emergency, yet it should hold the blade safely.
4-At least AUS 8 grade steel.
5-spear extractor hole on the handle
6-pointed piercing nose essentially razor sharp double edge on the first 1/3 section of the blade for even easier piercing to fish skull.
7-blade length could be variable depend on the fish size but i say 8-10cm is long enough, total could be 17-18cms.

 

[jimdoe2you]

Here is a digital mock up of what I have so far. It is based on an existing knife, but I have digitally reshaped it.

Remember, this is only an early draft, and I am certain further changes and refinements are to come.

 

[DeepThought]

One of those sharp "inlets" on the blade to cut wire/mono/line one might get entagled in.

 

[jimdoe2you]

The line cutter isn't scaled right, it is a bit small. But do we really need one? After all, this is a double edged stilletto!

 

[Adrian]

It depends if you want to turn it into an all purpose knife or just a fish knife. If it's all purpose then I'd recommend a serrated edge on one side, as sometimes cutting entangling rope or netting is easier and less time consuming than with a smooth edge.

Adrian

 

[jimdoe2you]

Thats just it, I don't want this to be an all-purpose knife. I am looking for a specialty knife for dispatching fish. There are a hundred different all-purpose dive knives out there.

 

[OregonSpearo]

Personally I think all existing stilleto knives do a great job at what they are doing. There is more room for improvement with the sheath though. Some sheaths are aweful and useless, some even dangerous. A sheath that lets you pull the knife in one sleek move yet secures it would be a great breakthrough.

 

[jimdoe2you]

What existing stiletto style dive knives are you refering to? If there are any that you admire, please tell me the brand and series names.

The best one that I have found (the Riffe Silencer) still isn't what I consider the best design it could be. I am not a big fan of the handle.

 

[OregonSpearo]

Sporasub Snake and Imersion Coralign Dagger are my favorite knives

 

[jimdoe2you]

I'm not familiar with the Imersion, but I have seen the snake. Nice knife, but I am refering to a completely different league of knives. It may not be for everybody, but it is going to be considered by many as the best knife for dispatching a large fish.

The blade will be not only be sharp, but thick enough to withstand hard impact an even light prying. I am very tempted to reveal the major manufacturer, but mumm is the word for now.

 

[Murat]

i don't know if any of you remmember the knife i introduced in DB net forums some time ago, it was CKRT's Hammond dive knife.Even if i don't get the knife since no distributors near me, knife looked very nice design in net.

jimdoe2you,

its hard to say something without knowing exact size of the blade and handle.You sholud mention the size.It looked oversized in picture. Balde design seemed good to me but it could be better if it gets narrower. I don't know may be its narrow enough but pictures does not show it. You should really think of skeleton type handle too, they are very hydrodynamic, but slim design handle will be good to. And the most important thing is steel, whats it made out of?

 

[Murat]

and you should ask manufacturer for piercing what works best, pointed end or tanto end.

 

[DeepThought]

Jim, in my opinion the ultimate knife is the only knife you'de wanna take with you. Or 2 of the same for those who carry more than one. That's why it should be an all purpose one.
Getting entangled is one of the greatest dangers down under, and sometimes every second counts, a good line cutter might save a few seconds/movements/O2 compared to a smooth edge.
Having one side serrated but not from the edge (that should remain pointy and smooth) shouldn't hurt the knife's dispatching ability in my opinion, but should help to make it an all purpose one.
I'm not really a spearo though, so don't mark my words.

 

[jimdoe2you]

The thought I started out with is this knife's sole purpose is to be for dispatching medium to large fish. Here are a couple of photos of three of my favorite knives (notice the push knife), however, each of these has attributes I would like to change. Thus, no perfect knife yet!

 

[jimdoe2you]

I thinned it down so that it is narrow. The handle needs to be completely reworked.

 

[Murat]

Yes you should work on handle. But the model you choosed (COLD STEEL? so this is the manufacturer you are working with?) is not very good for diving purposes. Yes, you can improve it but it will not be best of the top anyway. I think you better to choose one of the top dive kinfe design to work on it to improve. No need to re inventing the wheel is'n it?

Take a look at these,

http://www.spearfishing.com.au//fra...rfishing.com.au//shop.php?group=knives_dagger


http://forums.deeperblue.net/showthread.php?t=53204&highlight=knife


ps. second one is my favorite

 

[Bill McIntyre]

The thought I started out with is this knife's sole purpose is to be for dispatching medium to large fish. Here are a couple of photos of three of my favorite knives (notice the push knife), however, each of these has attributes I would like to change. Thus, no perfect knife yet!

I think you are going in the wrong direction if the sole purpose is to dispatch large fish. Any old knife with a pointed end will do that very nicely- its not exactly difficult.

The main purpose of any knife, at least a knife for a freediver, should be to cut line, kelp, and hopefully cable. If it can do that, it can dispatch fish almost as an afterthought.

In an emergency, I have used the serrated edge of my Riffe knife to cut 3/32" stainless cable like that shown in the middle slip tip of the photo below, and this was done in the water, not with one end of the cable in a vice in a shop. It took a bit of adrenalin and about three slashes, but it did it. That is the major capability that I want from my knife.

Killing fish is a piece of cake. If that's all you want your knife to do, then why not just use a sharpened Phillips head screwdriver?

 

[Groupermadness]

Hi Jim
İf you can get hold of the Bayonett from an AK47 and make some adjustments for dive use i will buy one straight away. my friend uses one without mods and its a wicked knife, has a hole in blade to clip onto sheath as a Wire cutter. and all the things for a General Purpose Knife. as for your Design i think its a good Knife to have for finishing off a fish, its not a lot unlike my old British marine issued Dagger.

 

[DeepThought]

Hi Jim
İf you can get hold of the Bayonett from an AK47 and make some adjustments for dive use i will buy one straight away. my friend uses one without mods and its a wicked knife, has a hole in blade to clip onto sheath as a Wire cutter.

I'm not sure undoing the sheath to use it as a line cutter would be the most elegant solution. On the other hand it's a nice backup as it probably has much more cutting power.