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How Does an OTF Knife Work? | In-Depth Demo
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18,065 Views • Jun 28, 2023 • Click to toggle off description
Here I dissemble an OTF knife to demonstrate how it operates.

Hope y'all enjoy!

00:00 - Intro
00:30 - Front and Rear detent
01:25 - Steel plate
01:58 - Thumb Slide
02:25 - Main Spring
03:25 - How it "shoots" out
04:17 - How it "shoots" back in
05:10 - Super Fast Explanation

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* THIS VIDEO WAS CREATED FOR EDUCATIONAL AND ENTERTAINMENT PURPOSES. USE EXTREME CAUTION WHEN USING OR HANDLING ANY OF THE ITEMS MENTIONED IN THIS VIDEO, YOU TAKE FULL RESPONSIBILITY AND RISK OF DOING SO. DO NOT ATTEMPT ANYTHING SEEN IN THIS VIDEO AT HOME.*
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Views : 18,065
Genre: Science & Technology
Date of upload: Jun 28, 2023 ^^


Rating : 4.965 (4/447 LTDR)
RYD date created : 2024-05-11T07:24:18.396734Z
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YouTube Comments - 31 Comments

Top Comments of this video!! :3

@SparkyMTB

10 months ago

I’ve watched 6 videos on this subject today (how does an OTF knife work) but your video has the best explanation, thank you 👍🏼

25 |

@nabins52

5 months ago

Jeeze, lots of videos trying to explain on here but not one is concise enough to make any sense. Yours however was to the point and super informative. Understood the mechanism. Thank you!

8 |

@dougvail7005

2 months ago

I found a microtech OTF knife in bad shape and wanted to fix it. It was different than the knife in your video but your explanation was so thorough I was able to understand the fundamentals of this design. I was able to dismantle, clean and repair the knife. Thanks to you I have a cool EDC knife. Keep up the good work.

2 |

@dondee5439

2 months ago

So basically the two springs (some OTF knives use only one spring) are under some stretch tension all the time. Moving the thumbswitch adds some more spring stretch tension and releases the little catcher tabs on either end and the blade slides either forward or backward. Pretty smart idea making a spring do work in either direction. I just wonder how much thrusting force an OTF knife can withstand before the blade collapses back into the handle. Seeing the guts of the OTF makes me think of a glorified utility knife for some reason. I guess it is like seeing the sausage being made. Great job on your video here.

2 |

@NonEuclideanTacoCannon

11 hours ago

Found a Benchmade OTF on the side of the road a while back, and I loved that thing. I basically used it as a glorified box opener, but it was extremely handy and I used it every day. Then it started getting stuck open. Took it apart, thoroughly cleaned it and hit it with dry lube. Still gets stuck out. Thought about buying a new one, then I saw the particular knife I have is like $400. I was hoping to glean some insight as to why it would close normally, but I'm still stumped.

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@bozmeg6918

3 months ago

Thanks ! Last video I saw did not explain how the spring works. You have the ability to explain in detail how it works. Thank you.

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@Moltimer5050

6 months ago

thank you for the explanation it was very clear and amazing

2 |

@vtxdaryl

1 month ago

Excellent explanation,thanks.

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@simartnullnet

2 months ago

Excellent explanation

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@Nefville

4 months ago

Thanks. I just got a Lightning OTF, the older version, and I was wondering how that works so easily. I guess it doesn't take a lot of force from your thumb to move a blade in and out, but it does kind of seem like magic.

1 |

@tranxoo2501

3 months ago

u really explained it very well

1 |

@matthew8455

4 months ago

Nice video you really helped me understand how the knife works. there really hard to get here in canada I was very curious how it works and I don't wanna take mine apart an risk braking it or something

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@Faerhatte

5 months ago

06:02 That's one word is enough to explain the entire mechanism about how it works (*anyway I'm a homemade knife too )

1 |

@69CamaroSS

3 weeks ago

Applying years of gun smithing, race engine building and machine shop experience…….it seems only logical that IF one was to mirror polish the contact surfaces on the plate and the detents, the “trigger pull weight” can be dramatically lessened on these which would provide a much lower amount of pressure necessary to be applied to the thumb switch in order to fire the knife! 🤔🤔

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@dmitriibannikovasx

3 months ago

Assassin's hidden blade mechanism)))

1 |

@elihorn9525

2 months ago

How are the detent springs installed? Are they just wedged between the body and the detent or is there some kind of mechanical connection?

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@jeffgough

5 months ago

Great video. Would love an explanation of how the blade stops if it encounters an obstacle / resistance while opening though. That’s an excellent safety feature of these OTF knives and always perplexing. Is it because it has forward momentum from the spring while opening but doesn’t reach the detent to “lock it open” so it just stops the momentum?

1 |

@crewcutter2030

3 weeks ago

Ok, now how do we customize it to work like the assassins creed hidden blades?

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@Mr-pm3jp

2 months ago

1:36 "when this slides FORD" 1:43 "blade to move FORD"

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@akibee6789

10 months ago

Out the front more like out “tender” front

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