Hollow ground push dagger?

B

bali-flip

Joined
Aug 30, 2008
Messages
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I just got my Cold Steel Safe Maker I. It's an awesome push dagger, although a bit on the large side. It think it borders between what a knuckle knife should be (a readily concealable weapon for defensive purpose) and a trench warfare weapon. Despite this, I can still comfortably carry it IWB with the sheath it comes in. So if anyone is wondering, it's a good choice.

However I'm wondering what the purpose of the hollow ground back is. I can't post pictures b/c I don't have a paid subscription but you can see it on coldsteels website. I watched a youtube video and some guy said the purpose of it was so that the blade wasn't uniform and a punching (stabbing) motion wouldn't leave a leave a clean cut in somebody but rather more of a hole. Kind of like the WWI trench knives and their tri-edged blades. Although it is NOT triple edged.
 
Well, my thinking is this:
If the back side were flat, the edge angles on both sides would be less acute than they are. The hollow-ground back side allows the blade to be thinner toward the edge, and hence have a finer final bevel.
 
puukkoman said:
Well, my thinking is this:
If the back side were flat, the edge angles on both sides would be less acute than they are. The hollow-ground back side allows the blade to be thinner toward the edge, and hence have a finer final bevel.
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This is my thinking as well.

Tom
 
What is the advantage of this? Does this make it sharper? It's sharp enough to slice paper somewhat effortlessly but by no means razor sharp.
 
bali-flip said:
What is the advantage of this? Does this make it sharper? It's sharp enough to slice paper somewhat effortlessly but by no means razor sharp.
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puukkoman gave you the reason in post #3. It answers your question with "yes".

If you want a keener edge on the knife, put it on yourself. Remember that this is primarily a stabbing weapon, not a paper slicer.
 
It doesn't make it "sharper," but it makes the blade "thinner at the shoulder," meaning that it COULD take a keener edge, and would be better at deep cutting without binding than a blade that is thicker.
Maybe that is clearer than my initial reply...
 
Thanks, but couldn't cold steel have done this without having a fully flat side. I think the Benchmade Infidels blade does that too but isn't fully flat on one side.
 
bali-flip said:
Thanks, but couldn't cold steel have done this without having a fully flat side. I think the Benchmade Infidels blade does that too but isn't fully flat on one side.
Click to expand...

It is flat on one side for more comfortable boot carry.
 
bali-flip said:
I just got my Cold Steel Safe Maker I. It's an awesome push dagger, although a bit on the large side.
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The safemaker 1 is th same size as the safekeeper 2. both are ok lenght wise but I love my safekeeper 1 which is giant and gives you quite a bit moe reach, good if you actually need it to fight. either way, i dont really like/trust the way the safemaker1 is although I have yet to cut thru anything via slashing. I heard/read that the way the blade is made that it will make a large C type of slice thru someting but i dont know if its bidirectional and I'm not 100% sure if the edge will slip off something rather then cut thru it when push comes to shove. my safekeepers seem to be able to slash thru anything either way you hold the knife.
 
CWL said:
puukkoman gave you the reason in post #3. It answers your question with "yes".

If you want a keener edge on the knife, put it on yourself. Remember that this is primarily a stabbing weapon, not a paper slicer.
Click to expand...

yes and no, it is called a pushknife/dagger but that doesnt mean it shouldnt be able to slash jus as well as it pushs.
 
Just did the paper test again 1 week since I did it when I first got it and it doesn't seem to be able to cut through paper now? Maybe the constant sheathing and un-sheathing while practicing draws dulled the blade? Idk. I know it's primarily a stabbing weapon but I'd still like the ability to slash. Would it work well on a Spyderco Sharpmaker
 
the goals of that knife are to 1. stab well, 2. cheap production. edge holding isnt super high on a push daggers to-do list. you dont see many people doing edc tasks with a push dagger, lol.

and since you don't seem to know how to sharpen a knife, how can you hope to stab/slash someone with it?
 
I can sharpen a knife, I can put a half decent edge free hand on one of those cheap stones. Although a Spyderco Sharpmaker is on my to-buy list so I was just asking. And the point of a push dagger is that if you know how to punch, you can stab with it. It's meant for people who have little knowledge in hand to hand combat. Even so I know quite a bit in that so I'd be fine either way.
 
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