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for the 2.0 version you should steam the veneer to make it more pliable and make the spring sections longer to lower the tension needed to close the blade as for the handle I would go with approximately 20 mm x 35mm x length. hope some of this may be of help to you.
The blade looks awesome! If these were mass produced, I'd buy one in a heartbeat. The urge to carry a sword that can be folded into a coat pocket is stronger than I'd realized
oh yeah 100%. I mentioned in another comment but how these are legally classified are definitely up-in-the-air, definitely "Not-A-Flamethrower" type situation, but if they do turn out to be technically and legally mass producible I would 100% get one. Seem safer than a butterfly knife, longer too which means if you ever did need to use it for defense you'd be even safer, it locks in place, smaller than a handgun, etc. (plus, as you mention, high-tier cool-factor)
@@robonator2945if someone pulled out the dishonored sword in front of me, I'm just accepting my fate at that point. I don't care about my skills, I'm fucked.
@@Ijustusethistocommentstuff true, but wolves and bears don't care about cool factor. (at least I hope not, we do *_not_* need bears to start getting any ideas and start stealing chainsaws from woodsmen) On a more serious note, if this qualifies as a sword rather than a knife then, even if the legislation would say that it is a 'gravity knife', that legislation probably wouldn't have a clause against 'gravity-swords'. That means that in areas with strict gun-laws it could be a literal life saver if you go out hiking or something and come across wild animals. I mean it's small enough to fit into a pocket yet gives you several feet of lethal range, ability to block/shield, deploys quickly, etc. If you can't own a gun for one reason or another that could *_very_* easily save your life. (assuming it was sharp enough, rigid enough, durable enough, etc. which, given the amount of care put into hardening it & whatnot, I imagine is the intent) Like I said the *_exact_* legality of this is a bit up in the air, it'd depend on what qualifies as a 'gravity-assisted opening', where the line is drawn between knife and sword, *_potentially_* even weird multi-century old exemption clauses like 'a man may only carry a weapon for self defense if it exceeds 2 feet in total length' that were added because back in 1823 criminals would carry improvised bone daggers or something and that scared people, etc. but, assuming it's at least reasonably legal enough, it could be a genuinely quite practical tool for a lot of people. (hell I'd probably keep one with me even if I had a gun, and no not just to dual wield although I'd be lying if I said that wasn't part of it)
This is incredibly cool, even for a prototype and considering its mechanically unique to the source I wonder if you could patent the design and work with a knife making company to sell the model. tldr: I want to own one!
I think the reason is that the actual blade part is thicker than the forked back end, allowing the back to cool faster while the blade cools a bit slower. That’s what would cause the reverse curve.
For the wood veneer, i recommend steam bending it roughly to shape, then do the final little bit of bending when gluing. The reason the blade bows the way it does is nothing to do with the hardening of the steel, its to do with the cooling mass. There is more mass at the back of the katana, so that has a greater force when it cools. Your blade has a greater mass on the edge, so cools slower and bows forwards. If you watch a katana quench in slow motion, you see it initially bends forwards as the blade cools quicker, then as the back of the blade cools, it drags the blade into its final curved shape. Hope that makes sense, loved the video keep it up my guy
@@Fredorandoyes, but it may end up too wet to glue properly. Steam bending it allows you to bend it, have it "memorize" a new shape, and then dry, allowing the epoxy to work better. Source: a carpenter (me)
This Old Tony did a bit about "Welding with Tool Steel" that you really need to see. You could potentially craft shapes and mechanisms for blades out of mild steel, then use the rod he was showing to stick a hardenable edge onto it.
As a fellow folding sword maker, I commend your design! I love that you solved the mid-blade solidarity issues and unique take on the locking mechanism!!! Thanks for your work!
One thing I love about your builds is that you go for function as well as fashion with your builds. There is engineering put to work to make the fashion, function.
19:45 Yoooooo that closing is SO sick!!!!! This is the kind of build I love to see you do! More people should watch this, if i may suggest, I would highlight the unique mechanism of the sword in the thumbnail perhaps by having 2 smaller images of the closed and open on either side with the sword handle apart and the blade in half larger in the middle. I think it would be really eye-catching and people would feel like they have to click to see more. Keep up the great work!
I'm a german knifemaking noob and making a functional Folding Blade replica is one of my long term goals. Do not currently have a shop to work in, unfortunately, but seeing you go such a similar way and getting to this point is truly inspiring. Keep it up!
The curve was caused by the thinner spine pieces cooling faster than the thicker edge, it is the same reason katanas curve like that. The blade will curve toward the quicker cooling side as it contracts (usually the thinner one) stretching the hotter, thicker, side slightly (in katanas it is the spine, in this case the edge). Then once the thicker mass begins to cool it will pull back toward itself which is what causes the iconic curve of a katana (which are actually forged as straight blades). I think you can still find slow motion video of it's effect on katanas here on youtube.
Ah okay so it did exactly cool like a katana. I was only thinking about hardness and not the clay working as insulation on a katana quench. Makes sense, thanks!
@@NjordArtisan I'm glad I can share some information with someone so much more skilled than I am. And it is cool that you interact with so many of the comments.
@@DH-xw6jp thanks! I don’t know if I’m more skilled but rather determined 😄 I’m glad so many people are interested in my videos, so I try my best to reply to as many as I can 🙌
I don't know if anyone has mentioned it, but a few things for the wood handle: To avoid splintering, a thing that I have heard of being done is steaming the wood beforehand, which might be a thing to look at. Some chemicals can be purchased instead of steaming to soften wood, such as denatured alcohol and spray it with a spray bottle (You probably should try it out beforehand because watermarks can be left.) Another thing is to hide cracks and holes in wood, grind up the type of wood you're using and put it into your crack with some clear glue. Afterwards, you can sand it down and it will usually hide it well. Normally a wedge can be used, but the metal underneath the wood plus the fact it is on a curve will make it more difficult to achieve. Wonderful video and I would purchase one for myself here in the United States! I look forward to V2 of the sword!
The reason why the hardening curve of the blade in the opposite direction is because normally with a katano the differential hardening pulls the curve towards the spine because of its solid unhardened spine. But because there is a hollow slot in the spine of your blade, it allows the differential hardening to curve in whatever direction it decides
Reason for the bending of the katana is the way they harden the Katana, with this sort of mud? they put on the think part, so it doesnt get as hot -> doesnt harden as much
@@DedMorez The clay is responsible for the differential hardening allowing it to shape in a specific pattern but because there wasn't enough spine material to hold the hard edge in place it warped in this case
@@xyzo9545 yes i know :D but he did harden it at once... no differential hardening... when steels gets harder, it does get longer, so it seems like the back and is harder then the edge...
Also, it's curving the way it did after heat treat is because the edge cools down quicker than the spine and hardens. There isn't enough heat left in the spine to pull it back during cooling. Katanas prevent that with the clay covering as it traps more heat and lets the spine remain hot enough to be bent outwards first and the pull the edge back while it cools down over a much longer duration. There is a very cool video of man-at-arms where they make a katana from Kuromukuro (or something like that) and they show exactly how the blade behaves by submerging it in a fish tank.
If I'm correct this *_technically_* is a gravity blade since things like butterfly knives are also typically considered gravity blades despite using momentum primarily (which this also seems to) but I'm a firm believer that unjust laws aren't laws at all so fuck it 'cause this is bloody awesome!
Thanks! I just had another look at the technicalities and it’s so loosely formulated that it probably could be defined as such. But with that definition a lot of different pocket knives should be illegal as well 🤷🏼♂️🫠
@@NjordArtisan yeah it's always a pretty big grey area and, honestly, I doubt you'd face any pushback since it's clearly more of a project and not intended to be used as an actual weapon against anyone, but I figured It'd be worth mentioning just in case because the 'grey area' on a lot of laws is far wider than most people realize. Again, I tend to fall into the more pro-freedom individualist camp myself, but regardless of what I personally believe it does still tend to be a grey area. With that said, knife vs sword legislation can vary, so it might be worth checking how (if at all) your jurisdiction distinguishes between a knife and a sword. This is a unique enough idea that I doubt there is a law against gravity-swords, (and if there isn't I *_need_* to know the first jurisdiction to officially include the word 'gravity swords' in their statutes) so if there is some well-defined legal metric for at what point a knife becomes a sword that could help de-grey-area it. If not there are other options like dulling the blade, potentially adding a lock, etc. that could be available, but again I'd personally doubt that they'd really hound you down for an obvious personal project. (although, to be clear, not a lawyer, not legal advice. I don't know your exact jurisdiction so I couldn't give anything concrete even if I was.)
16:40 I'm so flabbergasted with the way you use that power saw... 🤣🤣🤣🤣 Anyway the folding sword you made turns out to be good, the way you fold it back and fort looks as smooth as a butterfly knife.
From hy understand it and from my own experiences the amount and direction of the bend that you experienced while heat treating is not only caused by the composition of steel but also the speed of the quenchant. If you look at a katana during a quench it goes in straight, then bends towards the edge and only after that it bends back to create that signature curve. So could be the welded construction, could be quenchant or maybe neither. steel is basically black magic. Excellent build!
Some people said that due to the back having less mass and cooling faster the initial bend towards the edge happens and then the back is already too hard to allow it to bend back. I’ll definitely have to keep that in mind for the next version. Thanks for watching and commenting 🙌
Thanks! Good luck with that. The beginning can be tedious but you just gotta keep making videos and focus on improving with each video instead of looking at the views (harder than it sounds, unfortunately)
Great build! Ill add to the body of knowledge here; try soaking or at least wetting the veneer beflre you bend it. It should become much more pliable. If your worried about the moisture causing issues with the glue or metal, you can clamp it or hold it in shape aas it dries, and jt will keep the same shape.
Gosh I always adore watching the brilliance you have to put into these, it's so satisfying to watch them come together, though I admit the mechanics of the spring on this one are a tad beyond my comprehension, for some reason the whip mechanisms were so much easier for me to comprehend, I suppose it's my lack of sufficient knowledge in the area of putting together spring mechanisms. Would love to see you put the lessons you learnt on this one into other stuff though, maybe a kill la kill style scissorblade or smth lmao.
This is amazing. Before you start work on a less-prototype version, you should do some cutting with it, and maybe some harder targets too, see how the design holds up to hard hits.
This is really awesome mate!! If I can add my two cents, to avoid splitting the wood for the handle, soak the wood in warm/hot water and it will make the wood soft and flexible. Well done and great work!! :)
Ever since you made the whipsword I've been looking forward to see your attempt at the foldable blade, and you did not disappoint, this is incredible!!!
The blade is absolutely beautiful. I would love to see the next version. Dude has a serious talent. We fail just to make better. Keep doing your thing!
I like how he managed to interact with his digital environment fairly convincingly even though his green screen quality is similar to that of a lets player in 2009
19:03 i think you could use a wood square and file away the shape of the handle then apply them to the part of the handle, use sandpaper to shape for the liking thus you will have no cracks and a nice wooden handle!
Absolut! Der Akku ist dazu da, die Sägefähigkeit zu verbessern! Sein Fehler, wenn er den Job im ausgeschalteten Zustand nicht macht; von daher 10p an den Endnutzer. @@NjordArtisan
Super cool build! TIG welders are amazing tools, you can do a lot with them. I wonder if your lower blade half bowed in that direction because it's all the same alloy. Katanas bow in the direction they do because the edge is a higher carbon steel than the spine of the blade. Though that's just speculation on my part.
Ideas: For the wood veneer, would making the wood more flexible through a steam bath help? Form it to the handle shape and hold in place while drying to make the final piece closer to the right shape? Could also cut it into lengthwise strips to glue on like scales so the whole piece need not be perfect. For the handle pinching function, fashion a part to do it then affix it to the rest of your handle mechanism (similar concept to smithing an axe head)
10:20 I think the reason a katana takes that curve is because of the speed at which the material is cooled down, rather than the actual hardness/carbon content of the steel. The spine of the blade is covered in clay during the quench, so it cools down more slowly than the edge. Given, those two are related, but I'm gna say correlation, not causation. What I'm guessing couldve happened is that due to water also getting into the slot in the back of the blade, that part cooled down faster than the edge, thus causing a similar but opposite curve. As an amateur smith myself though, I relate to the pain of having a blade come out of the quench all wonky. It's definitely an art, not a science.
This is probably the most unnecessary complicated folding knife ever and i love it. Also i never thought about the otf aspekt of these things here in germany. during the time of assassins creed 2 i contemplated making a hidden blade, good thing i didn't i guess😅. And i really liked that this video was more about the process and less about making a show like with the glaive but still the intro was absolute gold. Last compliment i want to give out for now i enjoyed that this one was longer than the past couple videos and for my taste it could be even longer but i understand that this might put off some other viewers. I hope you don't make us wait to long for the next part.
Thanks a lot! Yeah the hidden blades are also something on my mind 😄 i think I have an idea to make something similar work. And thanks for the feedback! I think I‘ll stick to these types of video as the others really didn’t do well. I agree, this one could’ve been longer but deadlines and just doing stuff as a hobby don’t mix too well. Thankfully I’ll start doing YT/knifemaking part time in 2024 so hopefully I can put a lot more effort into the project and presentation of it 🙌 And I’ll be filming the test video this weekend. The third part may take a while tho, I’ll get into that in the video 👍🏻
To stop the veneer from splitting like it did, try soaking it until it's pliable and clamping the veneer to the thing want to shape it to. Let the veneer dry overnight and then glue it in place.
With how the blade bent at roughly 10:20 I reckon it's either because there was more material in the sharpened end then the hollowed out portion so it when heating it contracted more strongly then the other end, alternatively it could have been due to the temper of the metal being affected by the welding you did previously and whatever that may have done to the blade due to the heat.
I'm no expert in German law but maybe something you could try is making the "authentic" gravity knife version and just not sharpen the blade. Make it a proof of concept prop or something.
Pride in making the most game accurate Dishonored blade to date and knowing that it be used if you wanted? Doing both a game-accurate and German-legal version separately does sound like a lot of unnecessary work now that I say it aloud though lol.
@@Scott.E.H let’s see how the next one turns out. I still think if going the route of the ingame mechanism, the blade wouldn’t look as good because both segments would have to be of different height, creating that step I mentioned in the beginning
Fantastic design. May I suggest adding a re-curve at the pivot in the blade itself, the curve, depending on placment, could prevent catching the middle during repeated use.
Dude, I LOVE that you showed Joerg on your channel. You should have hit him up. He does a lot of collaboration with other tubers. He would probably be a big fan of what you do. He loves great big knives. Not quite as much as he likes slingshots. But he would likely have some valuable input for you. He is a mechanical engineer.
Nice-looking knife! If you soak or steam the veneer before applying it to the handle, it should be much easier to bend. Use as hot water as you can get!
Armorer here. When one wants to peen a rivet and keep the joint being actually mobile, a trick is using a paper "washer" betwen the plates to be riveted. It is usually _just enough_ to avoid overtightening once the rivet is done and the paper is removed.
one way that i know you can make wood, even veneer, easy to fold/bend is by steaming it to form. once formed then you can glue it in place. so i would suggest to put it on the handle as a loose fit then wrap a cord/rope around it and let it dry. once dry, glue and use a exacto knife or something to trim to the final shape.
The differencial hardening is the other way around, the edge part countains more mass and thus takes more time to cool down compared to the hollowed spine.
To make the tip stronger against force, I would make the first segment shorter and on the second segment have a small tang that would fit neatly into the spine of the first segment. Kinda like a friction folder but on a much smaller scale.
I don't know, but the way you close it at 19:46 is just awesome. But I'm looking forward to the test Video, because I suspect the top part will just fold in.
Full transparency I dont know what I'm talking about and only commenting out of watching others work. Instead of tig welding I would suggest adding a removable bolt connection with spacers. Would add an ability to adjust the tension, and the spacers keeping it from getting too tensioned from friction. Regardless, you've done a fantastic job and should be proud in your work.
It's probably in here from someone else with over four hundred comments, but to avoid cracking wood when bending like that you need a steam box. Basically boil a pot of water, and suspend the wood piece you want to bend in the steam for a few minutes, it'll become soft and pliable and then harden into whatever shape you bend it in to.
5:35 Game Theory! Will miss seeing Mattpat now that he’s stepped back from UA-cam but he will be smiling ear to ear hearing his legacy appear in vids like this!
10:43 Why the blade curved the opposite of a katana is because tradionally they quench katanas in water and i believe you quenched it in oil which causes steel to bend the opposite direction.
If you line your pivots with a thin silicone washer, you may be able to successfully peen the rivets without causing a pinch that prevents the pivot from swiveling smoothly. If you steam your wood veneer, or possibly soak it in hot water, it may become flexible enough for you to mold it around the handle without cracking. Then, once it has thouroughly dried out again, you should be able to glue the wood and metal together without worrying about cracks.
I’ll try to use bearings on the next version so hopefully that problem won’t occur again but if it does I’ll try that 👌🏻 And thanks for the tip with the veneer, I’ll try that too 🙏
Really, really cool. You might have already thought of this but maybe you can have the hinged part of the handle (the thin one that isn’t a blade) ride some kind of fuller, using the fuller as a guide rail. Then, when you’re sheathing the blade, the straight blade folds over and allows the hinges handle part to ride up the blade and cause the blade to start folding once it reaches the hinge on the blade itself. I wish I could give you a visual explanation as I’m finding it hard to put it to words. Also, a suggestion for your video production: think about investing in a small lavaliere mic to make it easier to hear what you’re saying when you’re a bit further away from the mic in an open or outdoor space. Might be a bit of a hassle dealing with the wire, but maybe just pick up the mic when you wanna talk so that it has no risk of getting in the way while you’re working on the metal. Once last thing, loved the editing. Glad to see your skills improve.
Great idea with the fuller! I also thought of some kind of rail for that part. Maybe I can figure something out for the next version. I actually have a lav mic but I often forget to bring in as I’ve often had the issue of it disconnecting and then I was left without audio for some video section. And thanks for watching, I’m glad you liked it 🙌
The curve is simply due to the metal cooling and compressing. The open side has nothing to pull so it warped to the side with all the material. You might try curving the piece slightly to the edge side before quenching...but a better idea is to put it in a straightening jig as soon as you pull it from the oil. This must be done right away or you seriously risk breaking it at that level of hardness. You are awesome! I love the creativity you put into your builds and it inspires me to try new ideas! Keep it up!
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Yesssssssssssss
Maybe make it shorter and simpler. Make a n unsegmented solid blade with a liner lock.
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for the 2.0 version you should steam the veneer to make it more pliable and make the spring sections longer to lower the tension needed to close the blade as for the handle I would go with approximately 20 mm x 35mm x length. hope some of this may be of help to you.
Sponsorblock tells me I dont think I will hear anything of sorts.
The way the blade folds out is seriously mesmerizing, way more fun than a gravity-assisted extension.
Right? I’m kinda surprised it fit’s in the handle because it looks like it shouldn’t 😄
Yeah, looks awesome, but I can't help but think about tent poles...
The blade looks awesome! If these were mass produced, I'd buy one in a heartbeat. The urge to carry a sword that can be folded into a coat pocket is stronger than I'd realized
Thanks! I can relate 😄 i probably flipped this thing open and closed a good 50 times while filming cause it’s so satisfying 😄
oh yeah 100%. I mentioned in another comment but how these are legally classified are definitely up-in-the-air, definitely "Not-A-Flamethrower" type situation, but if they do turn out to be technically and legally mass producible I would 100% get one.
Seem safer than a butterfly knife, longer too which means if you ever did need to use it for defense you'd be even safer, it locks in place, smaller than a handgun, etc. (plus, as you mention, high-tier cool-factor)
@@robonator2945if someone pulled out the dishonored sword in front of me, I'm just accepting my fate at that point. I don't care about my skills, I'm fucked.
@@Ijustusethistocommentstuff true, but wolves and bears don't care about cool factor. (at least I hope not, we do *_not_* need bears to start getting any ideas and start stealing chainsaws from woodsmen)
On a more serious note, if this qualifies as a sword rather than a knife then, even if the legislation would say that it is a 'gravity knife', that legislation probably wouldn't have a clause against 'gravity-swords'. That means that in areas with strict gun-laws it could be a literal life saver if you go out hiking or something and come across wild animals. I mean it's small enough to fit into a pocket yet gives you several feet of lethal range, ability to block/shield, deploys quickly, etc. If you can't own a gun for one reason or another that could *_very_* easily save your life. (assuming it was sharp enough, rigid enough, durable enough, etc. which, given the amount of care put into hardening it & whatnot, I imagine is the intent)
Like I said the *_exact_* legality of this is a bit up in the air, it'd depend on what qualifies as a 'gravity-assisted opening', where the line is drawn between knife and sword, *_potentially_* even weird multi-century old exemption clauses like 'a man may only carry a weapon for self defense if it exceeds 2 feet in total length' that were added because back in 1823 criminals would carry improvised bone daggers or something and that scared people, etc. but, assuming it's at least reasonably legal enough, it could be a genuinely quite practical tool for a lot of people. (hell I'd probably keep one with me even if I had a gun, and no not just to dual wield although I'd be lying if I said that wasn't part of it)
@@robonator2945Bear with chainsaw: the next Dark Souls boss
"If you're not bleeding on your knife, is it really hand-made" - no truer words have been spoken
This is incredibly cool, even for a prototype and considering its mechanically unique to the source I wonder if you could patent the design and work with a knife making company to sell the model. tldr: I want to own one!
Thanks! That would be cool 😄
This is the coolest replica I've ever seen of this sword, IT'S ACTUALLY COOLER AND LOOKS MORE MECHANICAL WHEN DEPLOYING
Thanks 🙌
I think the reason is that the actual blade part is thicker than the forked back end, allowing the back to cool faster while the blade cools a bit slower. That’s what would cause the reverse curve.
For the wood veneer, i recommend steam bending it roughly to shape, then do the final little bit of bending when gluing.
The reason the blade bows the way it does is nothing to do with the hardening of the steel, its to do with the cooling mass. There is more mass at the back of the katana, so that has a greater force when it cools. Your blade has a greater mass on the edge, so cools slower and bows forwards. If you watch a katana quench in slow motion, you see it initially bends forwards as the blade cools quicker, then as the back of the blade cools, it drags the blade into its final curved shape. Hope that makes sense, loved the video keep it up my guy
That makes sense, I didn’t think about the cooling curve but rather the outcome with hardness. Thanks! 🙏
What they say is true
wouldn't just letting the Veneer soak in water for a while before bending it work as well?
@@Fredorandoyes, but it may end up too wet to glue properly. Steam bending it allows you to bend it, have it "memorize" a new shape, and then dry, allowing the epoxy to work better.
Source: a carpenter (me)
yeah the way he did it looks like shit
This Old Tony did a bit about "Welding with Tool Steel" that you really need to see. You could potentially craft shapes and mechanisms for blades out of mild steel, then use the rod he was showing to stick a hardenable edge onto it.
I’ll have a look, thanks!
As a fellow folding sword maker, I commend your design! I love that you solved the mid-blade solidarity issues and unique take on the locking mechanism!!! Thanks for your work!
Thank you for watching! I’ll have to check your swords out for some inspiration on the next design 😄👍🏻
@@NjordArtisan would love to be of help! My designs are public domain, I would love to see people carry swords again!
I wouldn’t have thought that thing was even possible and you made it real, mad impressive
Thanks! 🙌
One thing I love about your builds is that you go for function as well as fashion with your builds. There is engineering put to work to make the fashion, function.
Thanks! This one turned out rather crude but I’ll try to make the next one fancy 😄
19:45 Yoooooo that closing is SO sick!!!!! This is the kind of build I love to see you do!
More people should watch this, if i may suggest, I would highlight the unique mechanism of the sword in the thumbnail perhaps by having 2 smaller images of the closed and open on either side with the sword handle apart and the blade in half larger in the middle. I think it would be really eye-catching and people would feel like they have to click to see more.
Keep up the great work!
Thanks! I’m glad you liked it 🙌
Incredible work once more. I love that you don't edit out your mistakes! Keep up the amazing craftsmanship! 很好！
Thanks for watching! The mistakes are half the fun of making 😄
你会说中文吗？我最近开始学习中文。
I'm a german knifemaking noob and making a functional Folding Blade replica is one of my long term goals. Do not currently have a shop to work in, unfortunately, but seeing you go such a similar way and getting to this point is truly inspiring. Keep it up!
Thanks, that’s cool to hear! Hope you’ll get a workshop soon 🙌
The curve was caused by the thinner spine pieces cooling faster than the thicker edge, it is the same reason katanas curve like that.
The blade will curve toward the quicker cooling side as it contracts (usually the thinner one) stretching the hotter, thicker, side slightly (in katanas it is the spine, in this case the edge). Then once the thicker mass begins to cool it will pull back toward itself which is what causes the iconic curve of a katana (which are actually forged as straight blades).
I think you can still find slow motion video of it's effect on katanas here on youtube.
Ah okay so it did exactly cool like a katana. I was only thinking about hardness and not the clay working as insulation on a katana quench. Makes sense, thanks!
@@NjordArtisan I'm glad I can share some information with someone so much more skilled than I am.
And it is cool that you interact with so many of the comments.
@@DH-xw6jp thanks! I don’t know if I’m more skilled but rather determined 😄
I’m glad so many people are interested in my videos, so I try my best to reply to as many as I can 🙌
I don't know if anyone has mentioned it, but a few things for the wood handle:
To avoid splintering, a thing that I have heard of being done is steaming the wood beforehand, which might be a thing to look at. Some chemicals can be purchased instead of steaming to soften wood, such as denatured alcohol and spray it with a spray bottle (You probably should try it out beforehand because watermarks can be left.)
Another thing is to hide cracks and holes in wood, grind up the type of wood you're using and put it into your crack with some clear glue. Afterwards, you can sand it down and it will usually hide it well. Normally a wedge can be used, but the metal underneath the wood plus the fact it is on a curve will make it more difficult to achieve.
Wonderful video and I would purchase one for myself here in the United States! I look forward to V2 of the sword!
Thanks a lot for the tips, I’ll give those a try! And thanks for watching 🙏
Man i don't know how you do it, but you do the things that absolutely no one else does or can do, so good bloody job.
Thanks a lot!! 🙌
All of your folding/whip swords have turned out amazing! This one is no different- really good job!
Thanks!! 🙌🙌
I have been waiting for years to see a metal one of these made. This is insane and can’t wait to see it progress
Ever since I played Dishonored... Which I have been recently informed is over a decade now.
The reason why the hardening curve of the blade in the opposite direction is because normally with a katano the differential hardening pulls the curve towards the spine because of its solid unhardened spine. But because there is a hollow slot in the spine of your blade, it allows the differential hardening to curve in whatever direction it decides
Reason for the bending of the katana is the way they harden the Katana, with this sort of mud? they put on the think part, so it doesnt get as hot -> doesnt harden as much
@@DedMorez The clay is responsible for the differential hardening allowing it to shape in a specific pattern but because there wasn't enough spine material to hold the hard edge in place it warped in this case
@@xyzo9545
yes i know :D
but he did harden it at once...
no differential hardening...
when steels gets harder, it does get longer, so it seems like the back and is harder then the edge...
Also, it's curving the way it did after heat treat is because the edge cools down quicker than the spine and hardens. There isn't enough heat left in the spine to pull it back during cooling. Katanas prevent that with the clay covering as it traps more heat and lets the spine remain hot enough to be bent outwards first and the pull the edge back while it cools down over a much longer duration. There is a very cool video of man-at-arms where they make a katana from Kuromukuro (or something like that) and they show exactly how the blade behaves by submerging it in a fish tank.
I’ll check that out, thanks!
the opening and closing action is pretty awesome. It's a nice effect, because you wouldn't expect that much of a blade to come out
If I'm correct this *_technically_* is a gravity blade since things like butterfly knives are also typically considered gravity blades despite using momentum primarily (which this also seems to) but I'm a firm believer that unjust laws aren't laws at all so fuck it 'cause this is bloody awesome!
Thanks! I just had another look at the technicalities and it’s so loosely formulated that it probably could be defined as such. But with that definition a lot of different pocket knives should be illegal as well 🤷🏼♂️🫠
@@NjordArtisan yeah it's always a pretty big grey area and, honestly, I doubt you'd face any pushback since it's clearly more of a project and not intended to be used as an actual weapon against anyone, but I figured It'd be worth mentioning just in case because the 'grey area' on a lot of laws is far wider than most people realize.
Again, I tend to fall into the more pro-freedom individualist camp myself, but regardless of what I personally believe it does still tend to be a grey area.
With that said, knife vs sword legislation can vary, so it might be worth checking how (if at all) your jurisdiction distinguishes between a knife and a sword. This is a unique enough idea that I doubt there is a law against gravity-swords, (and if there isn't I *_need_* to know the first jurisdiction to officially include the word 'gravity swords' in their statutes) so if there is some well-defined legal metric for at what point a knife becomes a sword that could help de-grey-area it. If not there are other options like dulling the blade, potentially adding a lock, etc. that could be available, but again I'd personally doubt that they'd really hound you down for an obvious personal project. (although, to be clear, not a lawyer, not legal advice. I don't know your exact jurisdiction so I couldn't give anything concrete even if I was.)
Awsome, cant wait for parts 2 and 3
Thanks! 🙌
The action on this sword is fascinating. Bring this to market please.
16:40 I'm so flabbergasted with the way you use that power saw... 🤣🤣🤣🤣
Anyway the folding sword you made turns out to be good, the way you fold it back and fort looks as smooth as a butterfly knife.
From hy understand it and from my own experiences the amount and direction of the bend that you experienced while heat treating is not only caused by the composition of steel but also the speed of the quenchant. If you look at a katana during a quench it goes in straight, then bends towards the edge and only after that it bends back to create that signature curve. So could be the welded construction, could be quenchant or maybe neither. steel is basically black magic. Excellent build!
Some people said that due to the back having less mass and cooling faster the initial bend towards the edge happens and then the back is already too hard to allow it to bend back. I’ll definitely have to keep that in mind for the next version.
Thanks for watching and commenting 🙌
I love how it opens and closes. Good job!
Thanks! It’s a lot of fun to just play around with 😄👌🏻
Now I want a fidget toy with the same motion, thanks hahaha
Great job getting the folding mechanism to work, looking forward the episode 3 with the upgrades.
Hello Njord you are a real inspiration to me. I’m going to try and make my own blacksmithing videos.
Viel glück
Thanks! Good luck with that. The beginning can be tedious but you just gotta keep making videos and focus on improving with each video instead of looking at the views (harder than it sounds, unfortunately)
@@NjordArtisan Thank you so much for the advice!
@@Chaos1king Danke
@@DrewProductions6 👍
Great build! Ill add to the body of knowledge here; try soaking or at least wetting the veneer beflre you bend it. It should become much more pliable. If your worried about the moisture causing issues with the glue or metal, you can clamp it or hold it in shape aas it dries, and jt will keep the same shape.
I’ll try that, thanks!
Gosh I always adore watching the brilliance you have to put into these, it's so satisfying to watch them come together, though I admit the mechanics of the spring on this one are a tad beyond my comprehension, for some reason the whip mechanisms were so much easier for me to comprehend, I suppose it's my lack of sufficient knowledge in the area of putting together spring mechanisms.
Would love to see you put the lessons you learnt on this one into other stuff though, maybe a kill la kill style scissorblade or smth lmao.
Thanks a lot! It’s basically like a frame locking folding knife but on the outside 😄
Wow you're totally a blade smith/engineer now! Great job my man 😁👍🏽
Thanks man! 😄
And thanks for watching, once again 🙏
This is amazing.
Before you start work on a less-prototype version, you should do some cutting with it, and maybe some harder targets too, see how the design holds up to hard hits.
Thanks, that’s exactly the plan for the next video I’ll be filming this weekend 👍🏻
@NjordArtisan heck yeah!
Given the impossible mechanics of the "In game" folding blade I have to say this is a fantastic recreation. Its an impressive recreation .
This is really awesome mate!! If I can add my two cents, to avoid splitting the wood for the handle, soak the wood in warm/hot water and it will make the wood soft and flexible. Well done and great work!! :)
Ever since you made the whipsword I've been looking forward to see your attempt at the foldable blade, and you did not disappoint, this is incredible!!!
The blade is absolutely beautiful. I would love to see the next version. Dude has a serious talent. We fail just to make better. Keep doing your thing!
actually the best take on corvo's dagger
Thanks!
I like how he managed to interact with his digital environment fairly convincingly even though his green screen quality is similar to that of a lets player in 2009
Still so glad i found you so early in your career
Thanks! 😄
When he said “just a theory” I heard “A GAME THEORY!”
Awesome knife man, great build. Matt in my ear at 5:36 kinda caught me off guard though 😂
Very cool, Sven! Loved the video
Thanks 🙏 Glad you enjoyed it!
19:03 i think you could use a wood square and file away the shape of the handle then apply them to the part of the handle, use sandpaper to shape for the liking thus you will have no cracks and a nice wooden handle!
another epic build, well done
Thanks 🙌
16:54 got me a good laugh!
"Sachgemäße Werkzeuganwendung, die" - The Virtue of using a tool the way it was intended to be used, 10/10
War doch alles richtig so oder nicht? 🥸
Absolut!
Der Akku ist dazu da, die Sägefähigkeit zu verbessern! Sein Fehler, wenn er den Job im ausgeschalteten Zustand nicht macht; von daher 10p an den Endnutzer. @@NjordArtisan
You did it!!! I hope @arkane studios sees things and uses the idea for dishonored 3!!
Thanks! It would be cool if they saw the video 🙌
Super cool build! TIG welders are amazing tools, you can do a lot with them. I wonder if your lower blade half bowed in that direction because it's all the same alloy. Katanas bow in the direction they do because the edge is a higher carbon steel than the spine of the blade. Though that's just speculation on my part.
Ideas:
For the wood veneer, would making the wood more flexible through a steam bath help? Form it to the handle shape and hold in place while drying to make the final piece closer to the right shape? Could also cut it into lengthwise strips to glue on like scales so the whole piece need not be perfect.
For the handle pinching function, fashion a part to do it then affix it to the rest of your handle mechanism (similar concept to smithing an axe head)
I’ll try that, thanks!
If you add a trigger release then this could be a really solid design. Other then that very good work.
It’s worth the subscription just to see the outcome of this project.
Thanks! Maybe you’ll even find some of the other planned projects interesting after this one 👍🏻
Awesome finish, that looks very cool
Thanks!
10:20 I think the reason a katana takes that curve is because of the speed at which the material is cooled down, rather than the actual hardness/carbon content of the steel. The spine of the blade is covered in clay during the quench, so it cools down more slowly than the edge.
Given, those two are related, but I'm gna say correlation, not causation.
What I'm guessing couldve happened is that due to water also getting into the slot in the back of the blade, that part cooled down faster than the edge, thus causing a similar but opposite curve.
As an amateur smith myself though, I relate to the pain of having a blade come out of the quench all wonky. It's definitely an art, not a science.
This is probably the most unnecessary complicated folding knife ever and i love it. Also i never thought about the otf aspekt of these things here in germany. during the time of assassins creed 2 i contemplated making a hidden blade, good thing i didn't i guess😅. And i really liked that this video was more about the process and less about making a show like with the glaive but still the intro was absolute gold. Last compliment i want to give out for now i enjoyed that this one was longer than the past couple videos and for my taste it could be even longer but i understand that this might put off some other viewers. I hope you don't make us wait to long for the next part.
Thanks a lot! Yeah the hidden blades are also something on my mind 😄 i think I have an idea to make something similar work.
And thanks for the feedback! I think I‘ll stick to these types of video as the others really didn’t do well. I agree, this one could’ve been longer but deadlines and just doing stuff as a hobby don’t mix too well. Thankfully I’ll start doing YT/knifemaking part time in 2024 so hopefully I can put a lot more effort into the project and presentation of it 🙌
And I’ll be filming the test video this weekend. The third part may take a while tho, I’ll get into that in the video 👍🏻
@@NjordArtisan sounds good. I wish you best of luck for 2024 then and i'm looking forward to what you can come up with.
That's a really cool build
Thank you 🙏
To stop the veneer from splitting like it did, try soaking it until it's pliable and clamping the veneer to the thing want to shape it to. Let the veneer dry overnight and then glue it in place.
I’ll try that, thanks!
With how the blade bent at roughly 10:20 I reckon it's either because there was more material in the sharpened end then the hollowed out portion so it when heating it contracted more strongly then the other end, alternatively it could have been due to the temper of the metal being affected by the welding you did previously and whatever that may have done to the blade due to the heat.
I'm no expert in German law but maybe something you could try is making the "authentic" gravity knife version and just not sharpen the blade. Make it a proof of concept prop or something.
But where’s the fun in it, if I can’t use it 😄
Pride in making the most game accurate Dishonored blade to date and knowing that it be used if you wanted?
Doing both a game-accurate and German-legal version separately does sound like a lot of unnecessary work now that I say it aloud though lol.
@@Scott.E.H let’s see how the next one turns out. I still think if going the route of the ingame mechanism, the blade wouldn’t look as good because both segments would have to be of different height, creating that step I mentioned in the beginning
Great design! I think I like this better than the original.
Fantastic design. May I suggest adding a re-curve at the pivot in the blade itself, the curve, depending on placment, could prevent catching the middle during repeated use.
Dude, I LOVE that you showed Joerg on your channel. You should have hit him up. He does a lot of collaboration with other tubers. He would probably be a big fan of what you do. He loves great big knives. Not quite as much as he likes slingshots. But he would likely have some valuable input for you. He is a mechanical engineer.
I might need to play this game after all, because this looks sick! Good job, my guy! 😍 Excited for Mk. 2 and for the third dishonered video 🥰
Mah man 🗿🤝
Thats putting it back in during with that flick was smooth af.
Imagine robbing a guy, and the he pulls out this thing 💀
Deploying and hiding the sword With this mechanism is actually just as cool looking as the in-game animations
Nice-looking knife! If you soak or steam the veneer before applying it to the handle, it should be much easier to bend. Use as hot water as you can get!
I’ll try that, thanks!!
20:39
that closing is so smooth tho
better than the original idea imo
Ive been waiting for a video like this for YEARSSS!!!
Looks brilliant keep up the amazing videos!
Armorer here. When one wants to peen a rivet and keep the joint being actually mobile, a trick is using a paper "washer" betwen the plates to be riveted. It is usually _just enough_ to avoid overtightening once the rivet is done and the paper is removed.
one way that i know you can make wood, even veneer, easy to fold/bend is by steaming it to form. once formed then you can glue it in place. so i would suggest to put it on the handle as a loose fit then wrap a cord/rope around it and let it dry. once dry, glue and use a exacto knife or something to trim to the final shape.
It's like a butterfly sword. Beautiful! I wish I had one
i like the pointer thing you used teaching us problems you need to solve. feels like i’m a grade schooler again
the green screening in it is amazing
Whip swords, whip katanas,folding swords your a trick weapon master at this point! Maybe you can open a workshop one day you know, for…hunters?
😄
It looks amazing great job
Thank you! The next one will look fancy 🙌
The differencial hardening is the other way around, the edge part countains more mass and thus takes more time to cool down compared to the hollowed spine.
Ein echt cooles Projekt und genial umgesetzt. Und wow kaum zu glauben, dass man so etwas bei unserem übertrieben heftigem Waffenrecht kreieren kann.
Vielen Dank! 🙌🙌
To make the tip stronger against force, I would make the first segment shorter and on the second segment have a small tang that would fit neatly into the spine of the first segment. Kinda like a friction folder but on a much smaller scale.
I don't know, but the way you close it at 19:46 is just awesome. But I'm looking forward to the test Video, because I suspect the top part will just fold in.
Right on point! I just uploaded the testing video 👍🏻
Full transparency I dont know what I'm talking about and only commenting out of watching others work. Instead of tig welding I would suggest adding a removable bolt connection with spacers. Would add an ability to adjust the tension, and the spacers keeping it from getting too tensioned from friction.
Regardless, you've done a fantastic job and should be proud in your work.
19:27 I cant stop watching that, and by the looks of it im not the only one
It's probably in here from someone else with over four hundred comments, but to avoid cracking wood when bending like that you need a steam box. Basically boil a pot of water, and suspend the wood piece you want to bend in the steam for a few minutes, it'll become soft and pliable and then harden into whatever shape you bend it in to.
Very cool and inventive! Nice!!
Thank you! 🙏
5:35 Game Theory! Will miss seeing Mattpat now that he’s stepped back from UA-cam but he will be smiling ear to ear hearing his legacy appear in vids like this!
10:43 Why the blade curved the opposite of a katana is because tradionally they quench katanas in water and i believe you quenched it in oil which causes steel to bend the opposite direction.
If you line your pivots with a thin silicone washer, you may be able to successfully peen the rivets without causing a pinch that prevents the pivot from swiveling smoothly.
If you steam your wood veneer, or possibly soak it in hot water, it may become flexible enough for you to mold it around the handle without cracking. Then, once it has thouroughly dried out again, you should be able to glue the wood and metal together without worrying about cracks.
I’ll try to use bearings on the next version so hopefully that problem won’t occur again but if it does I’ll try that 👌🏻
And thanks for the tip with the veneer, I’ll try that too 🙏
Nice design. Really like it. When you do the perfected model try putting bearings
For diffenetial hardening you need to insulate the soft part with clay keep the heat from penetrating it
I second this
Differential heat treatment is all about the rate that something is able to be quenched
Edge quenching i think is also an option
That intro skit was pretty funny. Great video.
Really, really cool. You might have already thought of this but maybe you can have the hinged part of the handle (the thin one that isn’t a blade) ride some kind of fuller, using the fuller as a guide rail. Then, when you’re sheathing the blade, the straight blade folds over and allows the hinges handle part to ride up the blade and cause the blade to start folding once it reaches the hinge on the blade itself. I wish I could give you a visual explanation as I’m finding it hard to put it to words.
Also, a suggestion for your video production: think about investing in a small lavaliere mic to make it easier to hear what you’re saying when you’re a bit further away from the mic in an open or outdoor space. Might be a bit of a hassle dealing with the wire, but maybe just pick up the mic when you wanna talk so that it has no risk of getting in the way while you’re working on the metal.
Once last thing, loved the editing. Glad to see your skills improve.
Great idea with the fuller! I also thought of some kind of rail for that part. Maybe I can figure something out for the next version.
I actually have a lav mic but I often forget to bring in as I’ve often had the issue of it disconnecting and then I was left without audio for some video section.
And thanks for watching, I’m glad you liked it 🙌
Your version looks like the kind the main boss would use to differentiate himself from his subordinates
The curve is simply due to the metal cooling and compressing. The open side has nothing to pull so it warped to the side with all the material. You might try curving the piece slightly to the edge side before quenching...but a better idea is to put it in a straightening jig as soon as you pull it from the oil. This must be done right away or you seriously risk breaking it at that level of hardness. You are awesome! I love the creativity you put into your builds and it inspires me to try new ideas! Keep it up!
Thats already crazy cool! Mrk.2 will be amazing!
The bend in katanas is introduced due to the clay thats used to make the hamon, causing differing cooling rates.
pretty frickin slick for a prototype
Very cool! Get some wood grain adhesive vinyl. Will give the aesthetic but go on nicely
With the way it flourishes almost naturally when folding out, it almost looks like the butterfly knife's bigger, badder brother.
This is UNREASONABLY cool