You probably have the best video explaining the action. I've had microtechs, lightening otf blades, and I never wanted to take it apart but was always curious. Most other videos just go, "hey. Yea these springs move the blade with the switch and it locks. There ya go." With your slow motion bit and this particular blade it was easy to see how it works. I made a manual otf today at work on a whim and was thinking how I could automate one myself. I now know my next totally work related dont ask questions project in the machine shop.
Excellent information/demonstrational video. Its great that you have gone into the actual mechanics of this device. These are illegal down here in Australia, so I plan to make my own. Thankyou very much. Cheers mate.
Ok. Thanks again. The switch itself actually creates the tension. Thats where i was stuck. So say a push button, would not work in this design. Cheers your educating the world my good sir
Mate this video was great, I pulled apart a cheap one I scored at the flea market today and learned how it worked along with watching ur video, also had an Epiphany as well, the mechanism works just like a stapler when u load the staples in :) never woulda understood that properly without watchin ur vid. cheers from Australia!
I am trying to figure out how to use this same type of mechanism for longer, wider, thicker blades that would be coming out of the business end of a walking stick. I have made sword sticks, I have made electronic shocking sticks, what I would love to be able to figure out is how to incorporate the basic mechanics of these knives to, either work with a much bigger blade(the locking mechanism would neat some adjustment The other idea is to have a few projectiles( basically a heavy dart or bolt) that can be shot out of a walking stick, using just say a 80# push spring. (Possibly even rubber bands as in a spear gun, just with all the guts in the inside of the stick, don't want it to look like anything but a walking stick. Just a couple ideas, you mentioned that you did some fooling around with making a few yourself, would love to hear what you think about this in a much larger capacity? Thanks
I bought a $125 out the front Knife locally. I had it open and stuck it into a piece of ham. It never worked right again. I brought it back to the shop where I bought it and we took the knife apart and there was this little teeny tab that was all that was keeping the blade out when you stuck it into something. When I stuck the tip of the knife into the ham that little teenie tab bent and could not be repaired. I ended up getting a cheaper Out The Front Knife and some money back, but now I'm afraid any Out The Front Knife that gets stuck into something firmer than jello will break.
HI! I will respond to both of your comments here! It sounds like you got a lemon, do you remember the brand? All OTF DA knives (that I am aware of) have either 1 or 2 of those little spring tabs to hold the blade out, however they should be hardened steel. I would guess that either the knife purchased was a counterfeit, or that that the locking lever that bent was not hardened properly. No matter what, an OTF knife that is double action will be more fragile than a simple folder or fixed blade simply due to having more moving parts. All that aside, if that piece is bending, then it is likely simply a lemon. If you have any more info on the brand of knife it was I would be interested to know! Thanks for the comment, and hope this helps!
I used one of these to design a real hidden blade The way it works is I have my wedding ring and it's hooked up to a tiny tiny piece of string you can barely see it I flex my wrist back and it'll pull the knife out. I pull my knuckle inThe knife goes right back in fairly simple but it's really skinny you can barely shit underneath my clothing.
i bought this one for about 23 $ and it was broken after just one day, so i watched this video because i hoped to repair it, unfortunately the piece which is connected to the spring teared off so you have to change it, who knows where you can get those?
My otf is weird. I have to push the switch forward and the blade doesn’t come out, I have to tap it on a table or something and then the blade comes out. But when I push the switch down it goes down normally. Any help on how to fix that? Oh and I been seeing some metal shavings so I know it’s grinding somewhere, and I’ve oiled it but idk.
What's the casing/blade guide channels made of? plastic, alloy or steel? Doesn't appear very durable. Cheerz for explaining it. I'd often wondered how they worked too.
they are some sort of pot metal, nothing good, a nicer knife would likely use a hardened steel that is polished, the one used is a cheapo flea market knife.
what exactly do you want to do with it? Something like a cane sword thing? If you can take it apart I would think just making the slide longer would work?
thank you very muck your video i can now fix an old cheep knife my father gave to me recently that its self is not to funny!!!!!!! but i am 44 and the knife my father got 32 years ago and now thinks i am responsible enough to have it...thank you
Hello, it was the best video so far. Actually i need some help of yours, i want to design an OTF knife. If you there please let me know how to contact you.
Hey there! I am not 100% sure as I have never had to get one before, that being said, a cheap temporary alternative would be rubber bands. That aside though I would look at sites that sell kits and parts for building knives such as Knifekits .com and I believe there may be a switchbladekits .com as well. I have never ordered from either of them though so you may search a little more to ensure they are reputable.
if it is the same knife then I wouldn't think it is a broken spring since it is a single spring design, I would guess it has something to do with either the sled that the spring rides within, the bracket that is supposed to catch on the blade tang pin, or the tang pin itself. Hope you can get it fixed though!
Hey! I am honestly not sure, I believe it is supposed to be somewhat of a counterfeit of an "AKC Italy CONCORD" knife. I am not sure if the one I have in the video is even made anymore as chinese knock offs tend to be somewhat of a flavor of the month it seems and fade in and out, however, if it is the look you are going for. look at that AKC, I'm not super familiar with the brand, but I can say it is almost for sure better built than the one in the vid!
this is how assassins creed hidden blades work in case you didn't know. they just have another bit that changes the up and down switch thing into circular.
This specific one has no name, it is a cheap Chinese one from a flea market. That being said, if you search for "double action OTF" knives a lot will pop up. it is an automatic out the front double action knife.
It is hard to say without actually looking at the knife, what model/brand is it? Off the top of my head, my guess would be that there is some grit/dirt in one of the latches that is interfering.
People, don't lie. I personally could not understand a thing, because it's all words and no actual demonstrations. Like this pin gets into this notch, but without showing how it does it, and you try to imagine it all by yourself.
Out of the 4 videos I have watched, this is the only one that actually explained how this type of knife works- thank you!
True
This is the only video that I've watched that actually explained it well. I finally am able to grasp the concept of an otf switchblade.
You are actually so good at explaining it like,I haven’t seen any other video that explains it.
You probably have the best video explaining the action. I've had microtechs, lightening otf blades, and I never wanted to take it apart but was always curious. Most other videos just go, "hey. Yea these springs move the blade with the switch and it locks. There ya go." With your slow motion bit and this particular blade it was easy to see how it works. I made a manual otf today at work on a whim and was thinking how I could automate one myself. I now know my next totally work related dont ask questions project in the machine shop.
Excellent information/demonstrational video. Its great that you have gone into the actual mechanics of this device. These are illegal down here in Australia, so I plan to make my own. Thankyou very much. Cheers mate.
Great explanation! Thank you!
Your last point is key to understanding the whole mechanism.
Ok. Thanks again. The switch itself actually creates the tension. Thats where i was stuck. So say a push button, would not work in this design. Cheers your educating the world my good sir
Mate this video was great, I pulled apart a cheap one I scored at the flea market today and learned how it worked along with watching ur video, also had an Epiphany as well, the mechanism works just like a stapler when u load the staples in :) never woulda understood that properly without watchin ur vid. cheers from Australia!
Cheers! Glad my vid could help! It really is a cool mechanism!
Great video! Thanks for showing, I always wondered how they work
I really like your explanation of this.
Hey, thanks for this, never knew how they worked.
Thanks for this video. I had no clue how these worked. Now I do. :)
great explanation! the slow mo was a great idea to show how it works
Thank you very much 👍 Very informative and well explained. Your video has helped me immensely. Good stuff mate, cheers!
Thanks man. Another youtuber with a shitton of subs has avideo like this but doesn't explain it. Thanks and Merry X-Mas
I am trying to figure out how to use this same type of mechanism for longer, wider, thicker blades that would be coming out of the business end of a walking stick.
I have made sword sticks, I have made electronic shocking sticks, what I would love to be able to figure out is how to incorporate the basic mechanics of these knives to, either work with a much bigger blade(the locking mechanism would neat some adjustment
The other idea is to have a few projectiles( basically a heavy dart or bolt) that can be shot out of a walking stick, using just say a 80# push spring. (Possibly even rubber bands as in a spear gun, just with all the guts in the inside of the stick, don't want it to look like anything but a walking stick. Just a couple ideas, you mentioned that you did some fooling around with making a few yourself, would love to hear what you think about this in a much larger capacity? Thanks
Be wary of old man or woman with walking stick. If you want a projectile you might be better off with compressed air.
Thanks bro
I have this knife and been stuck i watch your video and fixed
Awesome video man ! first one I found on concord brand, finally figured out what the hell was wrong with mine.
very well explained, thank you!
I bought a $125 out the front Knife locally. I had it open and stuck it into a piece of ham. It never worked right again. I brought it back to the shop where I bought it and we took the knife apart and there was this little teeny tab that was all that was keeping the blade out when you stuck it into something. When I stuck the tip of the knife into the ham that little teenie tab bent and could not be repaired. I ended up getting a cheaper Out The Front Knife and some money back, but now I'm afraid any Out The Front Knife that gets stuck into something firmer than jello will break.
HI! I will respond to both of your comments here! It sounds like you got a lemon, do you remember the brand? All OTF DA knives (that I am aware of) have either 1 or 2 of those little spring tabs to hold the blade out, however they should be hardened steel. I would guess that either the knife purchased was a counterfeit, or that that the locking lever that bent was not hardened properly. No matter what, an OTF knife that is double action will be more fragile than a simple folder or fixed blade simply due to having more moving parts. All that aside, if that piece is bending, then it is likely simply a lemon. If you have any more info on the brand of knife it was I would be interested to know! Thanks for the comment, and hope this helps!
Make a video explaining how to mount it back in. It would be great!
I used one of these to design a real hidden blade The way it works is I have my wedding ring and it's hooked up to a tiny tiny piece of string you can barely see it I flex my wrist back and it'll pull the knife out. I pull my knuckle inThe knife goes right back in fairly simple but it's really skinny you can barely shit underneath my clothing.
i bought this one for about 23 $ and it was broken after just one day, so i watched this video because i hoped to repair it, unfortunately the piece which is connected to the spring teared off so you have to change it, who knows where you can get those?
Great explanation. Also makes it clear why these are great toys and letter openers, but not strong or durable.
My otf is weird. I have to push the switch forward and the blade doesn’t come out, I have to tap it on a table or something and then the blade comes out. But when I push the switch down it goes down normally. Any help on how to fix that? Oh and I been seeing some metal shavings so I know it’s grinding somewhere, and I’ve oiled it but idk.
Great explanation. Thanks
What's the casing/blade guide channels made of? plastic, alloy or steel? Doesn't appear very durable.
Cheerz for explaining it. I'd often wondered how they worked too.
they are some sort of pot metal, nothing good, a nicer knife would likely use a hardened steel that is polished, the one used is a cheapo flea market knife.
Can I get a stronger spring for my otf
What keeps the extended blade from pushing back into the handle?
Great find for $5. Thanks
do you have any ideas on how I could incorporate this mechanism into a walking stick?
what exactly do you want to do with it? Something like a cane sword thing? If you can take it apart I would think just making the slide longer would work?
thank you very muck your video i can now fix an old cheep knife my father gave to me recently that its self is not to funny!!!!!!! but i am 44 and the knife my father got 32 years ago and now thinks i am responsible enough to have it...thank you
Hello, it was the best video so far. Actually i need some help of yours, i want to design an OTF knife. If you there please let me know how to contact you.
Anyone know who made the first double action otf?
I have this same knife and was wondering where can I get replacement Springs or what can be used as a replacement
Hey there! I am not 100% sure as I have never had to get one before, that being said, a cheap temporary alternative would be rubber bands. That aside though I would look at sites that sell kits and parts for building knives such as Knifekits .com and I believe there may be a switchbladekits .com as well. I have never ordered from either of them though so you may search a little more to ensure they are reputable.
Blades and Boom thanks I think it's the main spring bit not sure it the blade will come out but won't retract back
if it is the same knife then I wouldn't think it is a broken spring since it is a single spring design, I would guess it has something to do with either the sled that the spring rides within, the bracket that is supposed to catch on the blade tang pin, or the tang pin itself. Hope you can get it fixed though!
I like that no name chinese otf! Any idea where online I might find one just like it?
Hey! I am honestly not sure, I believe it is supposed to be somewhat of a counterfeit of an "AKC Italy CONCORD" knife. I am not sure if the one I have in the video is even made anymore as chinese knock offs tend to be somewhat of a flavor of the month it seems and fade in and out, however, if it is the look you are going for. look at that AKC, I'm not super familiar with the brand, but I can say it is almost for sure better built than the one in the vid!
Awesome explanation. Watched another that just showed it working, but didn't explain anything.
this is how assassins creed hidden blades work in case you didn't know. they just have another bit that changes the up and down switch thing into circular.
Bob Bob is it possible that you could go into further detail on how the assassins creed blade works? Im trying to make a hidden blade
I'm currently using the scissor mechanism for the hidden blade. It's my first time making one for real, thus I'll use the scissor mechanism first.
aight cool thanks for the info dude
finally some people who realized you can make a hidden blade with off knife
That circular to linear converter mechanism is unnecessary in HB and can be replaced with smaller, more efficient mechanisms.
is there a certain name for that knife because that little thing somewhat intrigues me
This specific one has no name, it is a cheap Chinese one from a flea market. That being said, if you search for "double action OTF" knives a lot will pop up. it is an automatic out the front double action knife.
In america: shitty little knife from fleamarket.
in sweden: HOLY SHIT A WEAPON OF MASS DESTRUCTION
I have one of these and it shoots back down but wont shoot back up it has tension just wont release. This happend after i sharpened it
It is hard to say without actually looking at the knife, what model/brand is it? Off the top of my head, my guess would be that there is some grit/dirt in one of the latches that is interfering.
Can you do how to make it
Thank you!!!:)))
from where can i buy one at under 5 $
Hadi Rasheed from no where cheapest ones I've seen that won't destroy themselves are at least 50
Hadi Rasheed you mean 5 cents
This comment is from.... "when I was younger". 😂
Man be careful with your hands plz, you were going to cut yourself twice at least... And thanks a lot for explaining everything about it so easily
Welp, time to make a hidden blade.
People, don't lie. I personally could not understand a thing, because it's all words and no actual demonstrations. Like this pin gets into this notch, but without showing how it does it, and you try to imagine it all by yourself.
If u hav any knives that u dun really want gimmie