Hidden Blades Rule!

[@domoniquebrooks816]

This is the most "anime in real life" knife set I've ever seen and I love it.

[@HawtDawg420]

Now I need Joerg in an anime.

[@ДмитрийЧехов-с8е]

Insert that scene from guren lagann where Kamina unsheathes extra long katana

[@nirodha7028]

It was an amazing pleasure to visit you in your natural environment Jörg :-) Thank you (and yours) for your hospitality and the opportunity to create this video together. I had a blast and look forward to the next steps in this process. Mit freundlichen Gruss, Marten

[@Slingshotchannel]

It was great to have you here! We will go ahead just as planned.

[@speaklifegardenhomesteadpe8783]

​@@Slingshotchannel Awesome knives guys! ❤ ⚔️🤺

[@berndschreiber8152]

Awesome! 👍

[@michaelr3641]

Are you sure with this blade form the knife will be classified as a utility knife, not a weapon (illegal to carry)?

[@Ranger-Ford]

Leuke zamenwerking! Ik hoop dat gaat nog ferder met jullie😊

[@Bacteriophagebs]

Suggestion: bevel the guard from the outside toward the blade so that the guard guides the tip of the opposite blade into its slot to minimize the chance of stabbing your hands as you sheath the knives.

[@Frank_Nemo]

That chance would be pretty high at night, I reckon.

[@wingnutbert9685]

As long as you have you're safety T-Shirt on, you will be fine. This is the Slingshot Channel! We are our own safety mechanisms!😁👍

[@Bacteriophagebs]

@@wingnutbert9685 That's ridiculous. T-shirts don't cover your hands, they have short sleeves! 😁

[@wingnutbert9685]

@@Bacteriophagebs 😂😂😂 The short sleeves make it extra safe!

[@GUNNER67akaKelt]

Do I want one? Yes. Can I afford it? No.

[@belverin01]

how much is the fish

[@GUNNER67akaKelt]

@@belverin01 Going by the other things he sells, a lot.

[@georgeide2337]

​@@GUNNER67akaKeltYou would have to wait for a retail option he sells them higher because he is one man doing everything, he has to mark it up to make anything

[@Fuerwahrhalunke]

@@GUNNER67akaKeltIf I had to guess, I would say around 500€.

[@ArthurTipaldi]

​@@belverin01 no definitive price yet because it will depend on too manuy factors, but he's been talking about $600+

[@hulkthedane7542]

... "No, no. It is way cheaper than plastic"... You are hilarious 👍👍👍. .. and genious, both of you. VERY impressive!

[@Stelios300X]

Imagine a mugger pulling a basic pocket knife on you and you pull out this thing like an anime protagonist. Dude's gonna turn around and leave. Self defense through intimidation alone.

[@nirodha7028]

‘The knives you won’t have to use’ How’s that for safety :-)

[@GustavoRubioGSR]

Instant Legolas changed archery "Instant Musashi" changed switchblade knives

[@a.w.1906]

The effect pulling the blades is hilarious. I can watch it again and again and it's pure magic. 🤩

[@maltefrostemark3206]

Joerg humble as always! You never seize to blow us away! Truly a genius concept that you guys have perfected! Really impressive! This is a must have!

[@dohertymichael]

to help: 'cease', not seize. Great comment though..

[@wingnutbert9685]

Fantastic work! Great tool for hiking in areas with predators. Great profile for horizontal belt carry, front and rear. Definitely need to really give that mount serious testing. I'd be concerned about a branch, gear or ones arm hooking an end and it popping out, especially when carried at your rear. I'm sure you will have a good solution by production time. Look forward to seeing more!

[@PenneySounds]

I'd like to see this idea applied to a sword, if only as a movie prop style mockup. There are twin swords in that style with the blade and hilt being the same length, like the one used by Gordon Liu in "Kill Bill Volume 1". But with this mechanism, you could make a similar twin sword set with shorter grips but longer blades, resulting in more natural short sword proportions.

[@PenneySounds]

You could even design a full length Katana where you draw a normal Katana out of a sheath, but then pull the top end of the sheath and draw a second full length Katana. The first one would be basically a normal Katana but with the blade mounted slightly to the side, and the second one would have an extending blade of this style that extends by the length of a hilt, while having a pass-through for the other Katana. The first Katana is a normal fixed blade, and the second Katana is part of its sheath but pulls out to be the same length as the first one. Not at all practical but would be very cool in a movie.

[@PenneySounds]

Or you could have swords draw from opposite ends of a sheath like Shinomori Aoshi's twin Kodachi from Rurouni Kenshin. Though while his are two short swords point-to-point in one extraordinarily long sheath, with one hilt disguised as part of the sheath, you could fit full length blades into a single normal sized sheath and still disguise the second hilt as part of the sheath.

[@crozraven]

I would say it can even be applied to a more compact version of a polearm like a nagamaki or pudao or even greatsword, depending on the overall length of the handle, while the scabbard is half the length of the handle. Basically an almost 2 meter polearm can be compacted into 1.2 - 1.5 meter instead (with a top scabbard), like a normal arming sword length.

[@PenneySounds]

@@crozraven A Nagamaki could just be done as an OTF. No sheath needed. But something like a Naginata or Pudao could be done either by having the blade be an OTF and the handle extend out the other side, or it could be a folder. If the handle is double the length of the blade, you just need to make the blade fold in and the handle fold in half and it would close down to a third of the length. Making the handle fold could even accommodate a blade twice as thick as the handle.

[@crozraven]

@PenneySounds OTF used spring system & I doubt locking system could handle the mass of the blade. My point is this design is much simpler & arguably stronger for a longer/heavier blade. in the case of nagamaki example, let's say we have 100 cm handle, while the blade 130 cm (already included 20 cm full tang for strength), that would make overall sheathed mode up to 130 cm, while the unsheathed mode up to 210 cm, which is pretty impressive. You can basically carry it like a normal katana.

[@vttechie]

Can't wait to see the retail version

[@pavlepetrovic6846]

My knife brothers, you really have big respect and big love in Serbia!!! Thank you for giving us houpe that soon we will be able to get this products! They are beyond perfection! God bless you!!!

[@mrSaber79]

You have done a phenomenal Job on this project! I look forward to the durability tests for the production models. If they do a good job I'd very much like to get one!

[@a.w.1906]

"It's a two handed opening folder"... and both are laughing because of German laws.. 😂😂😂

[@cegatocollov]

...laughing at the sheer stupidity of german laws!

[@muchsake]

Sadly these ae almost certainly illegal under UK law.

[@JJFliesAndMakes]

@@muchsake Don't you have illegal even forks with sharp tips? "Laughing from Czech Rep. where is almost no knives regulations" :)

[@jamespurchase4035]

0:03 - Those smiles! That's why I come here! Keep up the great innovation

[@kentkagle3850]

been collecting inives since 1980 i like you and your channel more each time i watch every so often.Great work thanks!

[@robthompson1399]

What i like here is that when worn in the small of the back, putting it away after use is easy in comparison to a standard sheath knife. Trying to get the knife in to the sheath which is behind you would be hard and dangerous. But with this, you sheathe the knives, then you would just be clipping a unit into its holder with no blades exposed 👍

[@rg6637]

This is such an excellent idea! I would really like you also to come out with additional handle/sheaths that allow you to carry the blades independently.

[@viktor4840]

Will the robustness of the final iteration be combat-ready? Even if not, I want one (or better "two")!

[@Slingshotchannel]

I won't sell it if it would not totally meet expectations.

[@ridingonabudget]

I like the Alumide finish. Can you make a longer version, sword length? Disguised as a walking cane.

[@SeditiousSensei]

Excellent! I’d like to see 2 or more options of different sizes, such as an edc size and a zombie apocalypse size for example. Thanks for all the work you do!

[@HawtDawg420]

Love the innovations and engineering on this channel. If I had the money, I'd buy it just for the clever mechanism and novelty. I'd want it as an interesting show-piece at the very least!

[@kyleeames8229]

“It’s a two handed non-spring loaded knife, therefore it’s legal to carry publicly in Germany.” Yay, loophole! Jörg sounds like an American weapons enthusiast, leaving me to wonder whether he is a closeted American 🇺🇸. It’s okay man, it’s perfectly natural and we understand!

[@jadintenax226]

As always, Top notch and well done! Thank you for all that you do!! I look forward to seeing the end result. *Smiles* And yes I would like one.

[@CasualDandyAkaSqwrty]

Can't wait for this to go full-circle as Temu makes a pair based on Joerg's design and Joerg makes a 2.0 based on that :)

[@nirodha7028]

Hahaha… a wise man once said: ‘Imitation is the purest form of flattery.”

[@Nebu.1371]

It's the one thing after years of seeing your videos....I LOOKED FOR IT IMMEDIATELY!!! Semper Fidelis sir love you!

[@calminator2607]

Ive made some wooden models since i saw your videos of the first prototype and another way of carrying I've found is having a belt loop between the blades, and pulling it apart to detach it. That way theres no need for any pouch or attachment piece. Obviously with a sharp steel blade deployment could come at the cost of cutting off that belt loop as well as having the blades slightly in open position but I think i think with a little tweaking this carrying method still has promise

[@tom-hk]

It is a shame this would not be legal in the UK. I love the innovation.

[@Timboslice_NY]

you guys are so freaking cool.. like Batman's equipment experts

[@JamesNoris-r4h]

Add some kind of anti-slip barred grip to the handle. While messing around in the backyard, i noticed it does matter to have a good anti slip handle on a knife so you can have more confidence in stabbing and slashing things.

[@lynx348]

Hope there is a single blade version in the future. Maybe have a button to manually press to unlock blade.

[@casinferneycf45]

This is awesome!! I can't wait to see these on the market.

[@meikhummert1590]

Woher nehmt ihr nur all diese großartigen Ideen? Wer will so ein tolles Messer nicht haben? Ich bin schon ganz heiß auf den Hirschfänger. Jörg, du machst mich echt arm.

[@lething931]

Du machst dich wenn schon, selber arm. Weißte schon. 😉

[@jounikorhonen9441]

This absolutely the most blade for the concealed carrying volume I can think of! Ofcourse I want one!! -Be sure to make this the ABSOLUTE best quality it can be, with maybe 2 handle materials, one lightweight "tactical" and perhaps a really nice woodhandle one, or something. Strong enough to prune your garden trees for the rest of your life. Haha. I would NOT think it was bad even if you left blades some 3cm shorter, if the increased tang would make it absolutely rock-solid. Also, the final dimensions, is for peeling an apple/lightweight murdering or a heavy machete/wakizashi heavy duty stuff.

[@TimeofRagnarok]

I like the extending mechanism. I would actually like it in a single blade and sheath design.

[@whisthpo]

I would be Very interested in a Full Tang version with half the blade length too Guys! I can only foresee complete success with this first design Joerg & Marten!

[@RudigerStrey-bn2ln]

I love the idea and will try to get one. However, the "probably not think that this is a knife"-part could become a problem in Germany. In order to prevent a classification as hidden knife ("verdeckte Hieb- oder Stoßwaffe", which would be forbidden), please chose a look that clearly shows it is a blade weapon (e.g. the black finish of the Tanto prototype).

[@Slingshotchannel]

Verboten ist nur, eine Waffe so aussehen zu lassen wie einen Gebrauchsgegenstand. Das ist hier nicht der Fall.

[@woli6872]

@@Slingshotchannel Es sollte noch als Filetiermesser beworben werden, nicht dass das BKA noch auf die I#dee kommt, es als Waffe einzustufen (Klingenform) und es vorbei wäre mit dem Führen. Vielleicht gleich einen BKA-Bescheid mitliefern, um eifrigen Polizisten keinen Grund für eine Sicherstellung zu liefern...

[@Arachnoid_of_the_underverse]

Its not hidden its sheathed.

[@bears9740]

​@@Slingshotchanneldanke danach habe ich gesucht. Hatte welche auf Temu bestellt vor 1 Woche sogar.

[@matthiasfalkenstein9472]

I neeeeed this! Genious piece of engineering! 👍🏻👍🏻👍🏻

[@khoroshen]

The two of you make a great team, very natural video. Want one - yes.

[@EagleRayX]

DAS könnte ich mir gut als Bereicherung in meinem Fundus vorstellen. Wieder einmal super Idee und Umsetzung, Jörg!

[@seeratlasdtyria4584]

Thumbs up! AND, you might consider a double edged version where legally permissible, as "UP close and PERSONAL" Edged weapon fights are always a bit chaotic (been there done that) and you might find the ability to INSTANTLY cut from ANY direction worthwhile. Double-edged blades are also superior when dealing with an assailant wielding a club/baseball bat or wooden fighting stick/staff, as they can 'bite ' the surface of the former making a strike easier to parry/deflect/ or bind the aggressor's weapon while attempting to disable/terminate him/her. (former VN era- FORCECOMM HQ XVIII AIRBORNE SpclServ/War "SKYDRAGON" LEO here..) One final comment; you MIGHT consider disguising a version of this thing as perhaps a classic long shaft flashlight routinely carried by many types of military/security or law enforcement personnel. In any event, a marvelous creation:)

[@GuitarsRockForever]

If I'm a knife collector, 100% want one.

[@dewaldwestermann8541]

I need this in my life please make sure they produce enough for everybody to get a chance to own one

[@MK-bv6wn]

Fun fact: 0:17 Your last name Sprave mean in croatian&serbian devices it may also mean reconciliation

[@JohnSmith-NZ]

Joerg laughing in slow motion needs to be sampled for a possible Jurassic Park sequel

[@kentkagle3850]

Yes its fantastic already sent vid to 3 friends yes id want one (as lots of sharks and gators where i play lol) its a stellar design blade and tge concept of dual blades is still genius. im hoping price wont be prohibitve to many.Cant wait to see first run.Start small see how fast they sell..

[@BigTwitchy]

Do I want one? No. I want two.

[@menalgharbwalsharq648]

As a big knife fan for a long time bfore I knew you, Who followd every ptototype you made of and gave to our market, let me tell you that this would be a must have, There is some chinese wonky versuoin of this concept but this is a true buy from me

[@SteveSilverskull]

Amazing engineering. I doubt I could buy one in my country as our laws are very heavy-handed, but I wish you success

[@stanleyhaveron]

Amazing design. Yes I would be interested in the finished product

[@mmeglic]

I am from Slovenia, and I hope I can get one, when the production starts.

[@Frank_Nemo]

This is really, really impressive.

[@paul.wilkinson]

Im not into eastern martial arts weapons, but DANG, I WANT ONE OF THESE!!! This is so cool!!! The 3d printed prototype is perfection. Congratulations to you both. If I can afford one (I doubt it), I would love to own one!

[@nirodha7028]

Thank you for the positive feedback!

[@marpintado]

Thinking out off the box. Magnificente idea!!!

[@nathanaelsmith3553]

Perhaps there could be mirrored vertical grooves between the blades in the touching surfaces to accept a knotted piece of chord to suspend them from?

[@nirodha7028]

I like the ingenuity of this thought. It would be possible but I see two challenges: - The groove would actively take away overlap between one side of the blade and grip currently aiding in its balance and strength when fully extended… Even if only 1.5 mm for a 3mm thick cord it does mean taking away 6,8% of the overlap. - There is nothing keeping the blade handles from sliding apart besides the friction of the blades in their own handles when you pull them out towards their locks. This is also why the current holder is shaped around the guards to ensure the blades don’t slide partially open by accident. In the case of your cord suspension idea that would mean you instantly lose them. Thanks for thinking outside the box though! That’s how great ideas happen.

[@ThomasRSA]

I never knew that I need knives. That other one "hirschspringer"? I need that one too.

[@BMetz-ug9mh]

Hands down for this idea and i'm looking forward to this collaboration. Hr. Sprave: wie immer auf höchstem Niveau 👍🏼 Tolles Video, hat Spaß gemacht

[@Austinn72]

So badasss I need to see a bad guy in a movie pop out an alleyway and bust open these dual wield blades and then the protagonist claims them cause they are cool af

[@timkarsko5635]

Großartige Idee und tolle Umsetzung! Bravo die Herren! :p Ich würde sogar eine Plastik/Spielzeug-Version für mein Patenkind kaufen ;)

[@4362mont]

"Looks like magic, works like good design", My Better Half says.

[@theoneandonlysoslappy]

Two clever, humble guys praising the other :D

[@Wyrdrock]

I Love it! My only question is why does it have the false secondary back edge instead of just keeping it at full thickness along the spine for added strength and rigidity like a real tanto?

[@nirodha7028]

Already answered your question below the ‘inner workings’ video :-) But for those who only read your comment here: This design is based uppon the ww2 Japanese Tanto. It also has a partial fuller and false edge. In our case the fuller needs to be partial because that way it interfaces with the ball retention in the correct location. :-)

[@nucleusclothing]

I got my little brother a staff that split and became swords. One thing found cumbersome was the blades were the same length and placing them back in the scabbard with the length of the blades made it difficult. My thoughts were to make one blade an inch longer to start the process easy.

[@Lil-bits-animals]

Such a humble man.

[@sinaalex7577]

Another great knife design. And another limited edition. And another knife that will be probably available for those who have time enough to be online 24/7 to be ready to order when it will be available. For such a masterpiece the price is expected to be higher, that's ok. You get 2 knives, as Jörg said.

[@hanelyp1]

"Doesn't look like a knife" could be a legal complication in some places where concealed carry of knives is restricted. I can see a cop with an ax to grind saying the length of blade not retracting means that "fixed blade" laws apply. The blade length as a "folding" knife is a legal problem some places.

[@jdemeter4357]

It is easier to ask for forgiveness than to ask for permission. Could actually be done because it's a new concept. 😊 Yes I want two definitely,....?. Both halfs !!!! 😂😅

[@joeltldr]

want? yes!

[@oliverschmidt4501]

this belongs in a hitman game for real - its bloody awesome

[@space.youtube]

A long sliding blade coupled with a fixed full tang short blade would also be really interesting. And it would be much easier to guide the different blade lengths when sheathing too. Really great concept, I like it a lot.

[@nirodha7028]

You need the opposing blade to interface with the lock of the longer blade to disengage its lock though so that wouldn’t work. Have a look at the explanation video linked under this one if you need extra insight into what is going on. Always appreciate people giving their thoughts so thank you for participating here!

[@space.youtube]

@@nirodha7028 A button (un)lock on one side ( the longer blade side) would be cheaper to produce, be considerably less complex and would facilitate easier sheathing. So no, I don't see it being a problem. Regardless, still like the concept, it's great, but I do wonder how the knives would feel given the blades aren't centred in their respective handles?

[@nirodha7028]

@@space.youtubewell… An unlock button on the outside would be possible yes… it would not be cheaper in any way though. You are not creating less parts or assembly steps then we already have in the currently defined design. The off centeredness of these blades is pretty much similar to the Temu short ones… so if you own a pair of those you can get a sense for it. We really maximized the closeness of the blades relative to each other. There is only 2 mm of material in between them.

[@SatanSupimpa]

Already waiting for the limited edition double wakizashi 😆

[@flounder2283]

The bandage on his hand makes me think you have to careful closing the knife.

[@lady_draguliana784]

I had something like this years ago that did not have the retraction mechanism and this, assuming it is as robust, is WAY better! 🥰

[@F37METAL]

Thx Doc.very Awesome video. And great invention. Everyone's gonna want one. 👍👀🖖👻🤘😎🎸🎶

[@lady_draguliana784]

I'd definitely go with small of the back or belt buckle... I'd like a stiff flap to hold it in the holder so that you can pull it downward, so that it's not held in by clothing or an opponents body...

[@michel-vo]

I wouldn prefer stability over more blade length. Its the mechanism not the length, that makes the knife incredible!

[@squidbad]

Blade length is still very important here because it is visually striking to see a blade emerge from a handle half the length. I’m sure they will get the right balance of blade length and stability. Not every knife needs to be full tang, these knives are for show.

[@wolfy4753]

yes id love a pair of these

[@arikwolf3777]

Okay, Now to start save money to but one when it goes to market. I really like this design and I want it.

[@JerzyLasica]

Please think about the sliding sword from the movie ninja assasin (in the form of a knife). If anybody can make it a reality it's you.

[@craftingmat5425]

Count me in... I am not into knifes too much but this one really is badass, I like it!

[@solog764]

Yes, me and two more of my friends want one ! Please make sure everyone gets one. Don't limit supply to much. Thanks!

[@TheDiosparati05]

What!? There's no spring? Please take my money.

[@zyxwvutsrqponmlkjihgfedcba0]

You can stab with it. Proceeds to never stab with it.

[@crozraven]

Ok, here me out here. what if this locking mechanism being used to design a compact polearm instead like a nagamaki or pudao or greatsword or even twinblade spear instead? for example a nagamaki version, it's rather clear the blade length almost double the length of the handle, so we can assume the length for sheathed mode is as long as if not shorter then average length of katana with scabbard, meanwhile unsheated mode will go on the overall length of nagamaki & could be even more if the scabbard can be attached as pole too.

[@johnanthony6038]

You guys make a great team, congrats 🎊🍾🎈

[@At-07461]

Amazing! I'd buy one based on final aesthetics and production quality.

[@soso14diaz]

Is it possible to mass produce and sell the printed one as well as the future metal one? I would very much consider buying multiple of both.

[@tactical-dad]

Ich bin schwer beeindruckt!! Respekt!

[@WrigleyTrump]

I love it, Joerg! I would also like to see a smaller version that you can easy carry for EDC if possible.

[@sarchlalaith8836]

Joerg, can you figure out a way to make one side unlock externally when the blades are pulled, they way it could be a handle on a cane that can be pulled open in a moments notice

[@BobT36]

Wow the slo mo really shows the difference in smoothness of the draw with the 3d printed version, nice!

[@dronepride]

I want one. I need one. And the only problem is, that I want to buy some for my friends as well! Also I'm immensely looking forward to the Hirschfänger! 😍

[@coIorsone]

Nice to see someone from my country on this channel!

[@TylerSnyder305]

I'm not one for tactical things so I wouldn't be buying, but I think the idea is extremely cool and ingenious. These are absolutely destined to be featured in some big budget action movie. Somebody like Snake eyes from GI-JOE or one of the far too many super hero movies they're making these days, I just know these will end up in a movie and everybody will be wanting them.

[@nirodha7028]

How cool would that be right?! :-)

[@chickpea36]

I instantly thought of John Wick!

[@nirodha7028]

@@chickpea36 that would be quite epic indeed if Keanu uses the final product in one of his movies one day. One can only hope :-)

[@TylerSnyder305]

@@chickpea36 If they can spin the ending of chapter for like I'm thinking and make a chapter 5 then absolutely John Wick would love something like this.

[@kelwin58]

Yes, please! send it on to Midgards Messer. BTW... my Valhalla V2 arrived yesterday.

[@axistec]

I have to wait for the affordable mass production ones. But is a very desirable piece indeed.

[@gregscalzo5259]

I definitely want one. Great job guys.

[@ole7428]

Interesting to see just a compact knife with a single blade and short sheath. Two blades are not always needed, and one long blade in a compact form will find many more connoisseurs.

[@Taktloss84]

Moinsen, Oh ja! Ich muss sowas haben. Super Arbeit. Kann es kaum erwarten eins zu bestellen.

[@sleepnet.mp4]

i will definitely get one, keep up the good work!