This tutorial was dead on with helping me fix my knife that I purchased from the gun show a couple of years ago. It all of a sudden began having problems with automatically sliding in and out. I then followed your video step by step and was able to fix the problem. Your knife was probably a better knife due to the fact that it had two springs and my knife only had the one. But I was able to fix it all the same. Thanks👍🏾
Holy crap, I just broke mine after owning it for about 2 minutes!! Then I took it apart and shit flew everywhere!! I tried for about 20 mins to get the damn thing back together, THEN I watch your video and BAMM, SOB works again!! thank you!!
One or the other spring will always be under tension so when you push the lever up it releases the bottom latch and the spring that is under tension being held there will push the knife upward, the same in reverse Pushing the lever gives the whole knife its purpose. you can feel the spring just by pushing on the lever pretty ingenious
The springs are under tension after one end or the other has been moving about an inch. The blade itself isn't attached to the springs and the blade moves farther than they do because it has kick-points at either end that catch on either end of the spring and slider assembly. The spring is under enough tension to force the blade to slide the extra difference, recreating tension once the blade is fully extended or retracted, and has been locked into place at one end of the handle or the other.
the bottom latch 'hooks' onto the back portion of the blade that is locked by a tiny piece, whenver you push the button up, the blade still dosen't move yet, but that creates a tension in the spring and pushes that 'slider' up, when you push the slider up it unlocks the tiny piece holding the blade, so the spring will kick the blade out to the front, the bottom L Latch will 'hook' onto the case, and the blade will get locked by another tiny piece in the front, and the front L Latch will hold onto the blade (that black circle on the blade), when you push the button down it will create tension since the blade is locked, until you moved the slide enough so theres nothing holding the blade, the spring will kick it back to the initial position witch will lock in the bottom latch, repeating the process. Both springs are in the same tension, they are 2 springs so it functions faster and stronger
No lie I just broke my otf auto a few minutes ago as of typing this. It was grandfathered to me a few days ago by my grand father after Florence hit his house and flooded it so it's a bit rusted and I understand why. I love it so much nonetheless and I'm just sitting here watching Game of Thrones and switching it in and out and then it goes slack one moment. I was heart broken because it's a vintage piece from family but your video helped me. Your blades innards is vaguely identical to my blades and you helped me put it back together and working again! Thank you so much. I've already like, favorited, and added your video to my watch later list in case I break it again in the future and I forget.
So here is how it works, from what i have seen: When you toggle the switch to launch the blade opened, the spring-slide unlocks the locking tabs by moving them away from the blade, by the time this is fully done, the blade is under enough tension to launch it to the top or bottom ( That's the short answer ) Notice the pointed area on the side (That's for the bottom locking tab) The other is under the square part of it (That's for the top locking tab) Notice the round piece on the blade, and the small notch on the bottom of the blade. The 2 "L-Shaped" connectors, with the spring use those to launch the blade. The shorter L-piece connects with the round piece, which could most likely be a weight, and the longer L-piece connects with the bottom notch in the blade. When you go to close the blade, the Shorter L-piece stays in contact with the round piece of the bade, when the switch is moved to the closed position, you have put tension on the blade, and once you fully move it to the closed position, it has unlocked the upper locking tab; thus causing the spring to snap back, and launch the blade to the bottom, and lock it.
I still prefer to disassemble the knife to oil it so I know for certain there is oil on all the moving parts. If you don't want to do this, you can spray Rem oil (Microtech recommends this specifically) or WD-40; or drip lube like mineral oil or KPL inside while the blade is closed. This should lubricate the moving parts inside along with the other internals, but in my opinion it's a bit overkill. Not for me personally, but it works. Note: Immediately following spraying inside, open/close the knife a fair number of times while holding it upside down to let oil drip out. I want to mention that in the past, while doing this, I've had knives temporarily fail to lock. Don't panic; keep working out the excess oil & it should begin to lock up again just fine. It also helps to grip the knife handle tightly while closed while holding a paper towel against the opening, & whip the knife in a semicircle. This uses centrifugal force to remove additional oil from inside & fling it harmlessly onto the paper towel instead of your walls, ceiling, or loved ones. 😃 Hope this is helpful to someone!
@@sethellis7615 I think I figured it out. When you push up, the springs notch on the blade goes up too and it makes tension up, then the locks are released and it goes upwards, and the springs are back at rest. When you pull down, the springs notch at the bottom is pulled down and the locks are released, and the blade goes down. Hope it helped!
The springs are under constant tension while clipped onto the 'action bar'. The blade IS NOT under constant spring tension. The long push of the switch stretches the springs, then releases the lower or upper side catch allowing the blade to spring up or spring down. This is the difference between current otf's and the illegal old school switch blades which were under constant outward tension.
Thanks for this video! :) I had everything figured out except the small and large ends of the spring... And I wouldn't have known to keep the knife half out until putting the shell back together and then pulling it out all the way to reset the spring. I fixed my boyfriend's knife thanks to you! :)
@@jtet9559 there are two springs, two locks (black pins, that locks blade), a plate for carrying this movable system and lever, to controle it. So whrn you pulling lever up, its pushing the plate, but springs are still on the knife locked with pins. When lever in top position, plate moves the pin and its release the blade with tention made by springs. Accelerated blade goes up, then at the top it locks with another pin. And it works same backwards. Hope you did understood what i said with my poor english.
Hell yeah this guy actually knows a little bit about mechanics, I hate when people screw everything together on one side instead of trying to do a star pattern
Thanks very much. I've had my microtech for 12 years and apart from it looking a bit beat up what with the constant stabbing through ribcages n necks it hasn't missed a beat.....till today. The blade was non responsive and sticky.wouldn't realign by pulling blade all way out so found your vid,watched it,took mine apart,cleaned it and put her back together and whaddaya know she's good as new. You da man.
I have a cobratec knife that works just exactly like the one you're showing. The problem I'm having is that the blade does not spring in or out, where does the blade make contact with the spring so it will work???
very cool video. how do these otf double action blades hold up to stabbing something. for instance, if you got it stuck in someones head would it break the mechanism? thanks
hey man just recently got into these knifes is it a bad thing to keep makeing the blade go in an out cause its super addicting and i dont know if it hurts it or not
Is there anyway to take the blade completely out? I ordered a serrated drop point blade to replace dull dagger blade I need to sharpen. I’m having difficulty with stud on blade
@cutlerylover i looked at your last video when the blade is loose, and it didnt work. Now i might need to tighten the springs or hold on the springs, but how would i be able to do that?
Thanks for this video! I was able to fix my friend’s blade and passed on the info about pulling it out to reset it (got that from your other video). 🤙🏽🤙🏽🤙🏽
I was told by someone who I thought had credentials that the blade was blade was only under spring tension only when moving in or out; is the correct? Thanks
I noticed the other day that Microtech make a version of the Ultratech with a clear top,like the piece you just had to un-screw and lift off, so you can see what's going on inside your Ultratech as you use it, I think they may have done the same to some of their Scarabs too,pretty cool.
So i have a Ravencrest Tactical OTF that I have had for a few years, When i got it, I thought it was the sweetest thing ever then on the same day I fired it and it didn't catch so I did the pull the blade thing to lock it back and it was fine for a day. The next day I fired it and same thing happened cept when i pulled the blade it wont catch and the blade is just free floating. I sent it back for them to fix or replace it. Got the new/fixed one in. It did the same thing after I fired it twice. Now its been sitting in my night stand for probably over a year. Any suggestions? or should I just send it back to them again for them to "fix it"? Sorry for the essay
Just recently did this to mine and now the I have to push the blade all the way down till it clicks in order to eject it, and once it's up it locks into place and wont retract on it's own any idea what would cause this?
I just want to add a comment to some of the explanations as to how these knives function. I'll tell you my original confusion and what I had to learn. My original confusion was that this seemed like a perpetual motion machine. How can a spring open AND close the blade? And what resets the tension in the spring? Or if one spring opens it and another closes it, how do they not cancel each other out? What I've learned is that you, the operator, are putting energy into the system when you start to slide the trigger switch. You slide the activator switch about a centimeter in order to eject or to close the blade. When you begin to slide the switch, you actually are stretching out a pretty high-tension spring. When you continue to slide the switch, it trips a release and the blade is no longer held in place, so the spring snaps back to resting position and rocket the blade open. Same is true with closing it. The blade sits in a slide housing so that the spring can be cleverly attached in order to make the blade move in two directions.
The key to understanding it for me after similar confusion to yours about perpetual motion was firstly to understand that there is energy input from pushing the latch either way, and secondly that the spring starts the blade moving but it continues to move under inertia. Your comment helped me fully understand this.
What I think is happening is the plates that have the 2 springs attached to it, one of the plates are catching on a groove on the blade while the slide moves the whole body and on the other side it holds on to the body making the spring stretch and when there's a certain point of the slider there is a wedge that opens up the lock that keeps it from closing letting it close all the way and since the plate is still holding on to it, it slings it back to a closed position and the bottom lock locks it in place and does the same thing to open it. If that makes any sense. (Just search up of videos on dual action blades like the hidden blade on assassins creed)
I have an OTF Knife that keeps locking the blade too far out from the handle. I have to push the blade down to re-lock it back into to correct place for it to go back again.
Watched a different video, aside from the two locks and notches for them there is a small peg on the blade. One of those L shaped bars on the slide will grab onto that notch for retraction and the other side on the bottom of the blade for extension. When you push the button up it puts tension on the bottom of the blade which is held in place be the bottom lock, which is released at the top of the push the springs then do their thing and push the blade forward and out which is when the forward lock catches it, for retraction is the same thing except that the spring is being pulled on by the notch on the blade rather than the bottom. This is why the knives are mostly harmless when the blade is extending because the only thing pulling it forward is the spring tension and unless it reaches the lock it's just sliding in the track back and forth. Hope this helps to explain what is happening because this guy doesn't show our talk about any of this but it's the first video you will find!
Yeah, you keep on telling yourself that and see how it works out for you, personally I rotate my mags every month, whenever I get a weak spring Wolff sells great replacements. Btw, if you were trolling, nice try.
i got one from wish for 3Bucks, you could stab someone to death. But it doesnt cut. Btw does ur knife also has a safety, so when its beeing opened and the knife gets stop half way out that it just goes back in?
The plate slides forward while the spring stays behind hooked in the grove of the blade. When the notch passes the lock mechanism it contracts the tension thus slinging the blade out.
If anyone can tell me!! What’s the difference between dual action and switch blade OTF? I want to buy the D2 ghost tanto but it says on the website the d2 is a switch blade otf. I don’t want to have to reset the blade I would like to be able to push up to get the blade to come out slide down for blade to retract.
I couldnt find anything on the internet for it, but what i did was i took the springs out, and put a fair amount of fishing reel grease (not WD40 or any other silicon/oil type of spray) on them. after that, it didnt make that twanging noise anymore. Its not a permanent fix since the grease will wear away with use, but its never a bad thing to lube up any type of mechanical device anyways so. The small little tube of grease i got cost less that $2 too.
I like to use a q-tip with some Rem oil to get in the grooves and hard to reach places where there's metal shavings. P.S. Check the screws periodically as they will loosen over time. Also don't over tighten. The zinc alloy handles are soft and will cause the screws to strip out.
Could you please let me know how you did it? I live in the UK so unfortunately I can't buy one, but the mechanism seems really interesting to use and I'd like to try it.
Not sure what you did to your audio. But for someone listening to this on headphones (Mine are $150 dollar gaming ones so hardware quality shouldn't be an issue), it sounds as if the sound is alternating from one ear to the other really quickly instead of getting stead audio from both ears.
Hey man I'm from Canada and we aren't aloud to carry knives for self defense however we can everyday carry a knife for a tool at work or what have you. We also aren't aloud spring loaded knives or switch blade button knives etc. However we are aloud a tension bar on a knife. I was just wondering do you own a knife in your collection or perhaps know of a brand that you would use that has a tension bar in it that's legal here?
cool vid bought one a week ago and I messed it up in the 1 hour. tried figure it out for days till I gave up. but I seen your vid and was like OMG this shit is really simple. thanks man.
Hello Jeff! I just bought my first otf and I have a question. Is there a chance that the knife will deploy while in my pocket? And if yes, will it poke my leg? Thanks! It's pretty stiff, but I'm still concerned about my leg lol
Exactly what I was looking for. I "think" i need to take my apart and check things, as mine (randomly) doesn't lock open or shut at times :/ Glad to know it won't "shoot apart" when I take it down. :)
I think the real confusion is about what is putting the springs under tension. From the video it just looks like they are just clamped onto either side of the plate.
That's a really cool design. It's a lot simpler than I thought it would be.
This tutorial was dead on with helping me fix my knife that I purchased from the gun show a couple of years ago. It all of a sudden began having problems with automatically sliding in and out. I then followed your video step by step and was able to fix the problem. Your knife was probably a better knife due to the fact that it had two springs and my knife only had the one. But I was able to fix it all the same. Thanks👍🏾
Holy crap, I just broke mine after owning it for about 2 minutes!! Then I took it apart and shit flew everywhere!! I tried for about 20 mins to get the damn thing back together, THEN I watch your video and BAMM, SOB works again!! thank you!!
That happened to me to except its my brothers😫😫😫🤐
andi still dont understand how these work
One or the other spring will always be under tension so when you push the lever up it releases the bottom latch and the spring that is under tension being held there will push the knife upward, the same in reverse
Pushing the lever gives the whole knife its purpose. you can feel the spring just by pushing on the lever
pretty ingenious
The springs are under tension after one end or the other has been moving about an inch. The blade itself isn't attached to the springs and the blade moves farther than they do because it has kick-points at either end that catch on either end of the spring and slider assembly. The spring is under enough tension to force the blade to slide the extra difference, recreating tension once the blade is fully extended or retracted, and has been locked into place at one end of the handle or the other.
Andrew Wang Kinda what I was thinking! 2 spings, attached at the same points?? Where do these springs connect to the blade to launch it?
+alfwok Thank you!, i finally understood that thing
the bottom latch 'hooks' onto the back portion of the blade that is locked by a tiny piece, whenver you push the button up, the blade still dosen't move yet, but that creates a tension in the spring and pushes that 'slider' up, when you push the slider up it unlocks the tiny piece holding the blade, so the spring will kick the blade out to the front, the bottom L Latch will 'hook' onto the case, and the blade will get locked by another tiny piece in the front, and the front L Latch will hold onto the blade (that black circle on the blade), when you push the button down it will create tension since the blade is locked, until you moved the slide enough so theres nothing holding the blade, the spring will kick it back to the initial position witch will lock in the bottom latch, repeating the process. Both springs are in the same tension, they are 2 springs so it functions faster and stronger
No lie I just broke my otf auto a few minutes ago as of typing this. It was grandfathered to me a few days ago by my grand father after Florence hit his house and flooded it so it's a bit rusted and I understand why. I love it so much nonetheless and I'm just sitting here watching Game of Thrones and switching it in and out and then it goes slack one moment. I was heart broken because it's a vintage piece from family but your video helped me. Your blades innards is vaguely identical to my blades and you helped me put it back together and working again! Thank you so much. I've already like, favorited, and added your video to my watch later list in case I break it again in the future and I forget.
So here is how it works, from what i have seen:
When you toggle the switch to launch the blade opened, the spring-slide unlocks the locking tabs by moving them away from the blade, by the time this is fully done, the blade is under enough tension to launch it to the top or bottom ( That's the short answer )
Notice the pointed area on the side (That's for the bottom locking tab)
The other is under the square part of it (That's for the top locking tab)
Notice the round piece on the blade, and the small notch on the bottom of the blade.
The 2 "L-Shaped" connectors, with the spring use those to launch the blade.
The shorter L-piece connects with the round piece, which could most likely be a weight, and the longer L-piece connects with the bottom notch in the blade.
When you go to close the blade, the Shorter L-piece stays in contact with the round piece of the bade, when the switch is moved to the closed position, you have put tension on the blade, and once you fully move it to the closed position, it has unlocked the upper locking tab; thus causing the spring to snap back, and launch the blade to the bottom, and lock it.
thank you so much ^^ finaly understand it now lolz
I’m a visual learner
Finally. Seen so many detailed videos on the workings of these, but no one explaining how the spring tension works. Thank you!
@@crookedcreature3895 No problem
I still prefer to disassemble the knife to oil it so I know for certain there is oil on all the moving parts.
If you don't want to do this, you can spray Rem oil (Microtech recommends this specifically) or WD-40; or drip lube like mineral oil or KPL inside while the blade is closed. This should lubricate the moving parts inside along with the other internals, but in my opinion it's a bit overkill. Not for me personally, but it works.
Note: Immediately following spraying inside, open/close the knife a fair number of times while holding it upside down to let oil drip out. I want to mention that in the past, while doing this, I've had knives temporarily fail to lock. Don't panic; keep working out the excess oil & it should begin to lock up again just fine.
It also helps to grip the knife handle tightly while closed while holding a paper towel against the opening, & whip the knife in a semicircle. This uses centrifugal force to remove additional oil from inside & fling it harmlessly onto the paper towel instead of your walls, ceiling, or loved ones. 😃 Hope this is helpful to someone!
More like "how it's assembled" because it sure doesnt explain how it works.
He did show how it works. He showed that the two nodges at the top and bottom put the blade under constant tention and locks it in place.
Pretty much all he did was explain what goes where then a little bit about spring tension but not how the mechanism actually works
@@sethellis7615
I think I figured it out. When you push up, the springs notch on the blade goes up too and it makes tension up, then the locks are released and it goes upwards, and the springs are back at rest. When you pull down, the springs notch at the bottom is pulled down and the locks are released, and the blade goes down. Hope it helped!
watch this one instead
th-cam.com/video/RtuXzDqRVgw/w-d-xo.html
The springs are under constant tension while clipped onto the 'action bar'.
The blade IS NOT under constant spring tension.
The long push of the switch stretches the springs, then releases the lower or upper side catch allowing the blade to spring up or spring down.
This is the difference between current otf's and the illegal old school switch blades which were under constant outward tension.
Thanks for this video! :) I had everything figured out except the small and large ends of the spring... And I wouldn't have known to keep the knife half out until putting the shell back together and then pulling it out all the way to reset the spring. I fixed my boyfriend's knife thanks to you! :)
He didn't actually explain how it really works..
Yup. Easy thumbsdown.
just because you dont understand it doesnt mean he didnt explain it. cause i understood it completely
@@jtet9559 there are two springs, two locks (black pins, that locks blade), a plate for carrying this movable system and lever, to controle it. So whrn you pulling lever up, its pushing the plate, but springs are still on the knife locked with pins. When lever in top position, plate moves the pin and its release the blade with tention made by springs. Accelerated blade goes up, then at the top it locks with another pin. And it works same backwards.
Hope you did understood what i said with my poor english.
@@MorgahSenator this guy explained it.. The video didn't
I 100%........
Disagree
Hell yeah this guy actually knows a little bit about mechanics, I hate when people screw everything together on one side instead of trying to do a star pattern
Cool video you said it's not necessary to take them apart to oil question seeing that I'm new to this what kind of oil do you recommend
Thanks very much.
I've had my microtech for 12 years and apart from it looking a bit beat up what with the constant stabbing through ribcages n necks it hasn't missed a beat.....till today.
The blade was non responsive and sticky.wouldn't realign by pulling blade all way out so found your vid,watched it,took mine apart,cleaned it and put her back together and whaddaya know she's good as new.
You da man.
I have a cobratec knife that works just exactly like the one you're showing. The problem I'm having is that the blade does not spring in or out, where does the blade make contact with the spring so it will work???
very cool video. how do these otf double action blades hold up to stabbing something. for instance, if you got it stuck in someones head would it break the mechanism?
thanks
Great video! I just got a OTF knife and love it. But when the blade is pointed down it falls off the track easily. What could be causing this?
hey man just recently got into these knifes is it a bad thing to keep makeing the blade go in an out cause its super addicting and i dont know if it hurts it or not
Caleb Martin yeah it is bad for the mechanism but depending on the quality of the knife it should be able to last a while with you doing that.
Hahaha! You made me laugh because it's true. I don't even use the thing. I just keep it on my desk so I can click it back and forth.
So true!
Thanks. My knife got stuck due to a stick inside of it. Thanks to this i got it out at fixed it!
How tf did u get a stick / twig inside a otf knife lol
Hey Jeff,
Excellent video! I always wondered what was inside my OTF but I was afraid to take it apart. Thanks for this vid!
Duane
What kind of springs are those?
Might have to look into adding stronger ones.
Is there anyway to take the blade completely out? I ordered a serrated drop point blade to replace dull dagger blade I need to sharpen. I’m having difficulty with stud on blade
Do you have any videos of you taking apart a spring assisted out of the side knife. One that uses a button.
Hey Jeff, could you do a video on how to replace a tang pin on a balisong? Love the videos, keep up the good work!
@cutlerylover i looked at your last video when the blade is loose, and it didnt work. Now i might need to tighten the springs or hold on the springs, but how would i be able to do that?
Can you post some information on the spring tensions and explain why one of those L catches is shorter than the other?
My spring keeps popping off the lil metal side must be worn out? Can I just super glue it to hold on??
Thanks for this video! I was able to fix my friend’s blade and passed on the info about pulling it out to reset it (got that from your other video). 🤙🏽🤙🏽🤙🏽
Please could you recommend me a knife or some knives that are relatively cheap and are good for sailing
How do you get it to spring in and out, I put it together just exactly as you showed but it still doesn't work !!
Where is a good place to get screws and spacers for spring assisted knifes
I wonder if you buffed the internals if it would work better
I was told by someone who I thought had credentials that the blade was blade was only under spring tension only when moving in or out; is the correct? Thanks
Can you put the model of the knife in the video description? Thanks.
Can i take a pic of my super automatic...can u tell me if there any parts missing
I noticed the other day that Microtech make a version of the Ultratech with a clear top,like the piece you just had to un-screw and lift off, so you can see what's going on inside your Ultratech as you use it, I think they may have done the same to some of their Scarabs too,pretty cool.
So i have a Ravencrest Tactical OTF that I have had for a few years, When i got it, I thought it was the sweetest thing ever then on the same day I fired it and it didn't catch so I did the pull the blade thing to lock it back and it was fine for a day. The next day I fired it and same thing happened cept when i pulled the blade it wont catch and the blade is just free floating. I sent it back for them to fix or replace it. Got the new/fixed one in. It did the same thing after I fired it twice. Now its been sitting in my night stand for probably over a year. Any suggestions? or should I just send it back to them again for them to "fix it"? Sorry for the essay
Would these do for utility knives? Thinking on getting one for my grandpa's bday
Just recently did this to mine and now the I have to push the blade all the way down till it clicks in order to eject it, and once it's up it locks into place and wont retract on it's own any idea what would cause this?
I just want to add a comment to some of the explanations as to how these knives function. I'll tell you my original confusion and what I had to learn. My original confusion was that this seemed like a perpetual motion machine. How can a spring open AND close the blade? And what resets the tension in the spring? Or if one spring opens it and another closes it, how do they not cancel each other out? What I've learned is that you, the operator, are putting energy into the system when you start to slide the trigger switch. You slide the activator switch about a centimeter in order to eject or to close the blade. When you begin to slide the switch, you actually are stretching out a pretty high-tension spring. When you continue to slide the switch, it trips a release and the blade is no longer held in place, so the spring snaps back to resting position and rocket the blade open. Same is true with closing it. The blade sits in a slide housing so that the spring can be cleverly attached in order to make the blade move in two directions.
The key to understanding it for me after similar confusion to yours about perpetual motion was firstly to understand that there is energy input from pushing the latch either way, and secondly that the spring starts the blade moving but it continues to move under inertia. Your comment helped me fully understand this.
You saved my day! The spring on mine broke and needed to be replaced. Works great now! Thanks!
Have you taken apart a midtech knife?
What I think is happening is the plates that have the 2 springs attached to it, one of the plates are catching on a groove on the blade while the slide moves the whole body and on the other side it holds on to the body making the spring stretch and when there's a certain point of the slider there is a wedge that opens up the lock that keeps it from closing letting it close all the way and since the plate is still holding on to it, it slings it back to a closed position and the bottom lock locks it in place and does the same thing to open it. If that makes any sense. (Just search up of videos on dual action blades like the hidden blade on assassins creed)
I have an OTF Knife that keeps locking the blade too far out from the handle. I have to push the blade down to re-lock it back into to correct place for it to go back again.
Hey jeff whats the website you prefer to buy Edc Knives and gear?
Lost my little spring that hold the blade the bottom one can I find one?
So these lock out or in using its own inertia?
Watched a different video, aside from the two locks and notches for them there is a small peg on the blade. One of those L shaped bars on the slide will grab onto that notch for retraction and the other side on the bottom of the blade for extension. When you push the button up it puts tension on the bottom of the blade which is held in place be the bottom lock, which is released at the top of the push the springs then do their thing and push the blade forward and out which is when the forward lock catches it, for retraction is the same thing except that the spring is being pulled on by the notch on the blade rather than the bottom.
This is why the knives are mostly harmless when the blade is extending because the only thing pulling it forward is the spring tension and unless it reaches the lock it's just sliding in the track back and forth. Hope this helps to explain what is happening because this guy doesn't show our talk about any of this but it's the first video you will find!
Beautifully illustrated brother. Thanks!
I was wondering Would this be illegal to carry around like a normal pocket Knife or would it be considered a switch blade?
This was the most helpfull assembly I've ever seen!!! (Thought I broke my brothers switchblade😂😂😫😫)
What type of oil should I use?
Thanks for the video, it was just what I needed to get my OTF working again.
So if I'm right if you were to store the lightning it would be best to leave it where the blade flows loose? so both the springs are equal?
Correct, same goes for switchblades, always store with no pressure on the spring(s)
+mo_viking why are knives different that gun magazines? It doesn't matter if you store gun magazines with springs under pressure or not
Yeah, you keep on telling yourself that and see how it works out for you, personally I rotate my mags every month, whenever I get a weak spring Wolff sells great replacements.
Btw, if you were trolling, nice try.
mo_viking compression and decompression cycles weaken springs in magazines...... not keeping them compressed.
Where can a replacement spring be purchased?
Know anywhere I can get the trigger spring assembly for this model? The rear tab on mine broke off
I did what you did yet it still won't work. It IS pretty dry so would that be what is making it not work?
i got one from wish for 3Bucks, you could stab someone to death. But it doesnt cut. Btw does ur knife also has a safety, so when its beeing opened and the knife gets stop half way out that it just goes back in?
The plate slides forward while the spring stays behind hooked in the grove of the blade. When the notch passes the lock mechanism it contracts the tension thus slinging the blade out.
My blade won't retract. I've disassembled it a dozen times and put it back together according to videos and it still gets stuck
If anyone can tell me!! What’s the difference between dual action and switch blade OTF? I want to buy the D2 ghost tanto but it says on the website the d2 is a switch blade otf. I don’t want to have to reset the blade I would like to be able to push up to get the blade to come out slide down for blade to retract.
Very useful...and pretty humorous...keep doing this.
Can they "misfire" if smacked hard enough?
Great vid man too bad in canada we can't get them. I just started a channel with short vids about my highend knives any pointers?
My lightning has a twangy spring sound when it opens and closes. Any way I can possibly reduce or eliminate that? Thanks in advance
SK88RR5 The one I have makes the same noise, do you know how to fix that yet?
I couldnt find anything on the internet for it, but what i did was i took the springs out, and put a fair amount of fishing reel grease (not WD40 or any other silicon/oil type of spray) on them. after that, it didnt make that twanging noise anymore. Its not a permanent fix since the grease will wear away with use, but its never a bad thing to lube up any type of mechanical device anyways so. The small little tube of grease i got cost less that $2 too.
I just recently purchased a OTF from viper tec,and it don't work the blade is down inside and the switch moves up and down but nothing happens ?
Mark Lionelli I was just about to buy one from them, any better?
Take it apart and fix it!
Can I put a stronger spring in it ?
how much does that knife in particular cost, if you dont mind me asking?
Lucas Bruno 40 bucks at lightning otf knives dot com
oft blades still confuse the crap out of me.
I like to use a q-tip with some Rem oil to get in the grooves and hard to reach places where there's metal shavings. P.S. Check the screws periodically as they will loosen over time. Also don't over tighten. The zinc alloy handles are soft and will cause the screws to strip out.
Thanks, actually helped me fix my broken one.
I love this channel
John Heisz , I build it. makes one out of wood, gives a good working knowledge of these knifes.
Good video Jeff, keep it up.
Could you please let me know how you did it? I live in the UK so unfortunately I can't buy one, but the mechanism seems really interesting to use and I'd like to try it.
+E4STWOOD look up on TH-cam 'John Heisz', the channel is called 'i build it' it's one of his videos,
sween187 Thanks!
Excellent explanation!
can you make a hidden blade with this knive?
Not sure what you did to your audio. But for someone listening to this on headphones (Mine are $150 dollar gaming ones so hardware quality shouldn't be an issue), it sounds as if the sound is alternating from one ear to the other really quickly instead of getting stead audio from both ears.
how dos it open and close so fast?
Hey man I'm from Canada and we aren't aloud to carry knives for self defense however we can everyday carry a knife for a tool at work or what have you. We also aren't aloud spring loaded knives or switch blade button knives etc. However we are aloud a tension bar on a knife. I was just wondering do you own a knife in your collection or perhaps know of a brand that you would use that has a tension bar in it that's legal here?
thanks bud but I kinda covered all of what you just said in my comment. Also what brand with an assisted opener?/tension bar.
+Kunt Destroyer Kershaw for a beater knife. Been carrying one for almost a year and has never let me down.
cool vid bought one a week ago and I messed it up in the 1 hour. tried figure it out for days till I gave up. but I seen your vid and was like OMG this shit is really simple. thanks man.
Hello Jeff! I just bought my first otf and I have a question. Is there a chance that the knife will deploy while in my pocket? And if yes, will it poke my leg? Thanks! It's pretty stiff, but I'm still concerned about my leg lol
Awesome! I just fixed mine- the top side set screw was down too deep. Thank you!
should I buy the lightning or the Titan? both cost 40$
Titan is better quality and it has the sandpaper grip as well as the glass breaker and the pocket clip. Lightning does not have any of those features.
The Weins I will probably pick at up at some point then. As far as I know they are legal where I live.
We retail them
hagglesandbarters dot com
Thanks for the video, couldn't of fixed mine without it. Now it's good as new
DANKE
dachte mein messer währe schon kaputt nach 1 Tag aber man konnte es ganz einfach reparieren
Exactly what I was looking for.
I "think" i need to take my apart and check things, as mine (randomly) doesn't lock open or shut at times :/
Glad to know it won't "shoot apart" when I take it down. :)
How does it work mechanically
This video saved my day
I bet you could purchase better springs from a hardware store. You should see if you can upgrade it!
Mine is a double action but has only one spring
Can anyone recommend a good OTF, I have tried the lightning OTF But I want something a little faster and illegal
Have you tried hand grenades? Depending on where you live it could be illegal, and works faster than an OTF knife.
+JoeDurobot Thanks for the advice will look into it
+JoeDurobot hand grenades work slower
Check out Microtech for the nicer ones!
would you be willing to trade for the benchmade usb balisong?
you can just buy one from aliexpress
Catchmeinthecarpoollane
If you want a counterfeit
Hey Jeff review more ozark trail knifes and the multi tool everyone loves those vids!
I still don't understand how there can be spring tension in both directions!???
Oh I didn't know I had to reset it..this is exactly what I needed..thanks
Anyone know of a good oil to use?
Looks dry. Wouldnt it be better to have some oil on the internal parts and the spring?
I think the real confusion is about what is putting the springs under tension. From the video it just looks like they are just clamped onto either side of the plate.
would be nice if someone made a out the front ruler or spoon so we all could still play with them
if any one knows of something like this plz msg
They make OTF combs
Aaron Baldwin ok thanks found some
$100 tho
I think microtech makes an off comb...
cutlerylover $300
cutlerylover I was wondering if otf knives are legal in PA I was thinking about getting one but not sure of knife laws of PA
Thanks! Just fixed what I thought was a broken knife
Thank you for the video...not sure I would have figured it out by myself...take care...dl
What knife is that and how mutch is it gonna run me