Fair enough. I retract that last quote. Yes, it can fail but since it can't swivel, I don't see how it can swing back and cut you.
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My idea for a 3 piece titanium or steel handle barrel knife
- Thread starter fsir
- Start date
Fair enough. I retract that last quote. Yes, it can fail but since it can't swivel, I don't see how it can swing back and cut you.
I think the blade is attached to a disk by two pins for some reason.
End cap comes off. Inner tube comes out of outer tube. Blade comes out of outer tube. Blade gets turned around, goes back into the outer tube and passes though some slot in a cap on the other end. Inner tube goes back in, holding the disk against the cap with the slot. Other cap goes back on, holding the inner tube against the disk.
Yes?
It can cut you if it fails. Imagine a stab. Your mechanism fails. Blade and handle form a downward vee, hand goes forward into the blade. Cut.
Exactly.
Okay fair enough. But that kind of injury would be a more rare occurance than if the blade was on a swivel pin where the blade is specifically designed to close on where your hand is.
What you are positing is a sever structural failure of the steel to move in a way it was never made to do from mere arm strength.
- Joined
- Feb 24, 2011
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- 4,423
If only it could be designed such that the blade deploys point first out the front of the handle; maybe actuated by a button/switch.
All powered by some sort of spring to give it deployment speed and then the blade locks in the open position...
The blade can then be easily retracted by the button/switch back into the handle.
That'd be really neat.
OTF for the win...
All powered by some sort of spring to give it deployment speed and then the blade locks in the open position...
The blade can then be easily retracted by the button/switch back into the handle.
That'd be really neat.
OTF for the win...
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Lock failure...ANY lock failure....involves "a sever structural failure of the steel to move in a way it was never made to do from mere arm strength."
Not to discourage you but it looks to me like you are just trying to build a better mouse trap.
Okay, all multi-piece knives can fail. So sue me.
clearly, just based on the number of folding and multi-piece knives that get produced and might even be in all of our collections, potential knife failure is not an excuse to stop coming up with and making knives of new design.Do you know how many generic styled knives get produced every year? And I'm trying to build a better mouse trap???
What's the matter with you guys? I thought you liked knives. This is a pro knife forum, right? Many here seem determine not to see a new one.
Okay, I get it. I'm the new guy and this is a little ritual forum hazing, right? Good one!
- Joined
- Sep 17, 2012
- Messages
- 13,402
We love knives, that is why we're here.
We love new knives, new designs and concepts too.
Your design seems needlessly complex to use when a simple knife would be much easier to use and arguably more efficient.
You presented a new design and received feedback. It is constructive criticism, not meant to be a personal slight.
We love new knives, new designs and concepts too.
Your design seems needlessly complex to use when a simple knife would be much easier to use and arguably more efficient.
You presented a new design and received feedback. It is constructive criticism, not meant to be a personal slight.
No...its just an overcomplicated design. And you asked.
Still not really sure how you get the blade out of the tube to turn it around...
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- Sep 17, 2012
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It's a blade and a couple of tubes.
True. I meant the opening and closing not the entirety of it.
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- Mar 25, 2012
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fsir, I suggest you make the knife and use it. If you are pleased with how it works you can do a pass around if you want feedback. Here is a link to the passaround section of the forum. Best of luck with your project.
http://www.bladeforums.com/forums/forumdisplay.php/783-Knife-amp-Gadget-Pass-Around-Forum
http://www.bladeforums.com/forums/forumdisplay.php/783-Knife-amp-Gadget-Pass-Around-Forum
The blade, and the disc it's attached to with pins, is not "attached" to the handle per se, it sits in the very bottom of the handle and is pushed firmly against the inner handle wall by the steel inner cylinder and the cylinder is secured firmly down in place by a steel or tough aluminum screw cap. So the disc holding the blade is simply being forced in place by the cylinder (inner tube) and cap.
The working part of the blade itself sticks out of a slit in the bottom of the handle.
The handle opens on one end via a cap. When the cap is removed this allows the steel cylinder pressing down on the blade block to slide out. In turn, the blade block with blade attached can slide out too and be either turn around for use or put back in with the blade inside the handle chamber.
It's just basically a stackable design. The parts that go into the handle chamber stack tightly one on top of the other. And the cap is screwed on top to hold everything down and snug so nothing can move. So opening and closing and removing and replacing just involves stacking and unstacking three pieces (two if you don't count the cap). Because the handle and inner tube are both hollow, the blade can be stacked so it's either outside the handle (for use) or inside the handle (for safe storage).
I think what made it confusing is I didn't use the term "stackable". I think that would have helped everyone understand how it worked better.
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- Jul 14, 2014
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- 1,048
If only it could be designed such that the blade deploys point first out the front of the handle; maybe actuated by a button/switch.
OTF for the win...
This is what I got out of the schematic. It's a manual OTF without buttons or springs. Meh.