You think that is crazy, check out the Russian ballistic knife. Crazy thing will fire the blade, via a blank cartridge, in the same manner as a grenade launcher. But it's the size of a small dagger.
Big fan of that sword as well, I could never see how it fully worked but based of how Corvo spun it around made me think of a hybrid of a bowie/butterfly knife mixed with extended blades
One thing to keep in mind about extendable batons is that they're effectively one time use if they're actually used. Sure you can extend and retract them freely but if they're actually used to strike they often bend. Once bent they can be forced to retract again but then they don't freely extend. This is something police accept as "expendable". Your sword might have to take the same thing into consideration. If it's used in self defense it may effectively not be "reusable" but served its purpose.
As far as I know it depends on the quality, what you hit and how much force you use, for example hitting the thighs still hurts enough to stop someone, but it will be soft enough to do no damage to your baton. Some even come with a 2-year guarantee, which explicit state that what is not covered is: "gross damage caused by strikes against hard objects (e.g. stone, concrete, steel)" meaning that you can get a new one for free, if it is unusable after using it against a human/animal.
I’ve been in law enforcement for five years and I’ve never heard anyone say that a baton is an expendable item. Sure, they break on occasion, but I’d be pretty pissed if they broke under common use. Everything breaks. Our squads and pistols break, but that doesn’t make them expendable items. I’ve had an Asp Talon for most of my career and it has busted through many car windows and other hard objects with nothing but scratches. But, for Shad and Tyranth; the Asp Talon is a perfect example of a telescopic design with a button lock that will keep it extended during a thrusting motion. Most batons are friction locks, and I’ve had other officers use my baton and try to close it by banging it on the concrete like they would a standard issue one. It has stood up to the abuse.
He just started building a double knife - two identical knives and each sheaths in the handle of the other. His “German Engineering” version extends and looks physically impossible.
Very excited to see the carbon fiber sword next week no matter if it's practical or not, love ya Shad, you're a really big RUclips inspiration for me and I wish Shadiversity the best!
NjordArtisan has working 1st stage prototype of collapsible Dishonored sword. Also, JoergSprave shown off "pocket machete", which not truly collapsible, but still worth a look.
@@azuredragoon2054 in CP2020 mine go to weapons were the wolver blades ^^, and the ripclaws in Shadowrun but i was thinking for the mantis blades though
So a thought to consider is to not solely retract into the handle. You could have a very small sheath so your blades could be a little longer than your handle. It would potentially reduce the segment number, which would make it stronger.
The "sword" version of the "bottomless magazine" trope for guns. Instead of a handgun that seemingly never needs to reload and fires several dozens of shots from a single clip; this would be a full-sized sword that can be drawn from what seems like a dagger sheath. It's practically a cartoon trope, where a character has a tiny sheath on their hip, goes to draw the weapon, and just keep pulling out *more sword.* Honestly, I think that would be more intimidating than anything: drawing a 4-foot sword from a 6-inch sheath.
Shad. Engineer here. I highly recommend you look into the Gerber Doubledown or the Atropos balisword demon. The balisong style folding lock is very very strong (at large scale you can even do intermeshing gears or have a significant tang section held by the handles. It falls into the category of blades that would be as long as the handles (or longer with an extension like Joerg Spraves folding machetes if you want to save weight and add length) but it doesn't suffer any of the thrusting collapsing issues that telescopic designs or an OTF can have. I have it on very good authority that a lot of locking designs were tested for this sort of mid-range larger-than-a-knife but machete/large-bladed camp tool (or wakizashi-esque profile in the case of the demon) size blade and the balisong lockup won. You can also have a significantly thicker blade than your handles might suggest once held which is a downside of the telescopic design where the handle must be and remain larger than all the segments once deployed. This is present in the double down because folded it's only slightly wider than the blade but unfolded what were cutouts revealing the blade become a grip profile that can essentially be as small as you want. Just avoid making it way too high of an aspect ratio and from soft materials like Filipino baliswords which are much more prone to breaking. It also is significantly more practical to manufacture. It's still difficult but you don't have all the insane internal geometry of the telescopic system it's just a couple channels cut and a relatively standard blade.
Good idea. Usually people make folding mechanisms for these things that rely on a single sturdy articulation point and a comparatively flimsy catch/latch (I say "usually", but I think I've only ever seen Njord Artisan actually attempting a folding sword). The balisong gets its stability from the fact that it uses 2 equally strong articulation points (at a considerable distance) to hold the blade piece. (While the direction perpendicular to the blade is constrained by the design of the hinge points themselves.) It would even be possible to improve on that principle by offsetting the 2 articulation points on the blade (putting one further forward than the other). That would give you even greater stiffness against bending in one of the directions. (Put the blade of the sword on the side with the further forwards articulation point.) And the two handle piece surfaces that meet when the blade is unfolded should be machined/structured in a way that they mesh together, in order to avoid them sliding against each other. I think it should even be possible to make a 3-section balisong sword by using that "intermeshing surfaces" technique on both of the meeting surfaces - and you'd need some way to keep the pieces at the rear articulation area together. Obviously the articulation "area" where the singular front section meets the two middle sections will get in the way of it fully working like a sword, so it might be better to think about it as a spear/glaive with an added sharp section on the front part of the haft. But a 3-section balisong seems like it would have the added advantages of unfolding even easier than a 2-sectioned one, since you don't have to turn the handle pieces inside out; and the advantage of it being easier to get the handle section to align in both the folded and unfolded arrangements when you significantly offset the hinge points forwards/backwards.
The concept artist Artigas created multiple illustrations of Tolkien Dwarves. One of those invents a Dwarven Folding Spear designed for transport and combat in low-clearance tunnels that is basically a giant balisong knife.
You can have low profile spring loaded buttons that pop out to prevent the extendable blade from going back in. Two on both sides in each segment. It will also give it extra structure. And for you to sheath it again, you have to press the buttons back in.
My favorite version of the "collapsible sword" is a plate-pinch design. This contains two plates that are angled and hollow as well as solid hardened tip that can fit inside. How this works is the hollow plates are being held by tension via the handle they can hide into and the tip is shaped so the base of it has a shaped knob that gets stuck inside the two hollows. This sword is gravity/momentum extension style and because of the the tension in the handle it actually holds well.
@@SoloGamingZA nope, I didn't miss anything. I saw the joke and disregarded it cause it was so incorrect to how a lightsaber is shown to function. At most the crystal uses the Force in some way to stabilise the beam. Else Han couldn't have used Anakin's lightsaber in ep5.
This is a subject I love. Collapsing and expanding weapons are one of my favorite things and I like having them in the stories I write. The big one is in my fantasy medieval story where the Royal Families and their Royal Family Knights have these weapons called Expand Weapons (Not completely attached to the name) They are easy because it’s magic. The casing of the weapons hold a pocket dimension inside that holds all the blades, cross guards, handles or shafts. So when they’re fully expanded they’re even stronger than regular weapons, because magic.
From using a telescoping pole for cleaning and similar tasks, leave more than you think inside each joint. If you extend the sections fully, there is 100% torque on the joints, more angle develops, and it's easy to break them. If you leave about 6" within the previous section the forces are more side to side within the joint, the extra length left inside the previous section stops it from being able to develop such a high torque right at the joint and break the joint. 16 foot telescoping paint pole etc at Lowe's in the USA for reference for the type of pole. But most any telescoping pole or antenna works similarly, if you leave a reasonable bit back within the previous section it is much stronger than fully extended.
i think if i was going to design an extendable sword, my first thought would be to have a shorter blade with an above average length handle, such that about half the blade would be able to retract into the handle, and then have a sheath that goes over the rest of the blade and clips onto the handle to keep it in place. you'd still be able to get good reach with the length of the handle but it would also be able to shrink by maybe a quarter of it's total length. depending on the size of sword you want that could pretty easily be concealed under the flap of a jacket.
Likewise. It used to be I MIGHT get recommended like every third or fourth video. If something did happen in the algorithm I'm glad it did, because I can now listen to shad talk about extending his hard sword.
Hey shad! Consider contacting Adam Savage, host of mythbusters, in his channel Tested. He is a precision machinist and i bet he will be able to not only create but also improve any design if he agrees to work on it.
I imagine money might be the issue there. Unless Adam just wants to help out from passion and not charge top dollar (naturally there'd still be some costs, and the fact that they're both popular youtubers would mean there's some content to be made from it) to our still-probably-suffering-from-the-algorithm Shadenites.
This is a great idea. It would probably help sell him on it if you pitch it as a proof of concept test to see if it'll even work properly as a durable blade and they could run Mythbusters style tests on it to see how it holds up compared to a standard blade against various things like a flesh analogue, types of armor, types of shields, etc. You could make a video creating the sword from Adam's side, and then have Shad do the Mythbusters style durability tests.
I assume Adam *could* build this, but this kind of metalwork isn't really his specialty. This design would either need to be welded up from machined halves or, possibly, cut on a wire EDM. Who knows, worst case if he has any interest at all would be he recommends some good machinist contacts. The problem I see is the cost to setup for machining one of these and finding out it fails quickly. You could also get it printed in steel for prototyping 'sake, though obviously the strength would hardly be a 1:1 with solid metal.
Good job on the design. I think it could perform in between each of your estimates as a light weight weapon. Difficult to make, yes, perhaps a lost wax casting would work. Precision is a must and polishing even the inner surface would be necessary. You could make the tip piece and perhaps the handle and the first section but the second and third would be quite a challenge. 3D printing might one day be an option but it would still need to be polished on the inside. Good luck.
Put a solid knife on the end of a sturdy extending pole/stick that gets to sword-length. This forms a mini-spear that might even have some cutting potential. You're obsessed with "sword" because that's awesome, but "mini-spear" might actually be practical.
I agree. There’s a reason swords have stayed in one typical form despite many style variations. They work well for their use and too varied of designs don’t do the sword job as well. This design I think there would be too many areas for stress to multiply and break the whole thing.
I've seen some cool wire EDM precision cutting thing that cuts holes and corresponding inserts from solid blocks of steel with so much precision, that when an insert is placed inside the hole all the way flush, you can not see the gap between the parts, nor even feel it with your fingers.
I think that might be the only way to make those hollow blade segments out of a solid steel. you could try folding the steel into the box shape but the precision would suffer
I think if you did an otf blade that folds in half you could theoretically have a secondary otf mechanism for a pin of some kind (preferably rectangular for better durability) to create rigidity. The primary difficulty of this design would likely be incorporating the second otf mechanism. I've always wanted to make something like this as a proof of concept I just don't have the tools to do it yet.
You could still make a serviceable extending sword with just 1 otf mechanism. Take inspiration from the "Sword of Omens" from Thundercats and don't fully hide the blade. Make it look like a fixed blade knife/dagger but after unsheathing you flip the switch and the hidden length of the blade pops out.
Been missing these office conversations videos from the channel. Really enjoyed this banter, Shad & Tyranth. Keep up the passion and doing what you love, we’ll be here watching!
I've been pondering this extending sword question since childhood, same as the rest of you. I'm so glad yall made this video. Love the designs and serious discussions. Some day guys, there will be a design that works. Hope I live long enough to see it
Allot of jigs & making a good press... the spine would need to be thicker to take rivets & so the segments would be considerably smaller per segment. or at least thats my take after about 30 seconds of thinking on it as a hobbyist who has gone through some blacksmithing schooling.
This is. Really neat concept! Perhaps it would be even more possible if the amount of segments were reduced? I'm thinking something like a 2 and a half handed or 3 handed sword (think the LOTR elven swords). That would mean each segment could have significant length while the handle alone is still very manageable in size (just bordering the limit of manageable) With that you could get a similar length with only 2 blade segments, and maybe having the hollow parts be thicker? Perhaps the strong of the blade would even be able to be supported in the middle with some pins or beams, while the top would have a central cutout, but would still be a solid piece. The other nice part is that if you wanted your folding cross guard. You could still grab the grip of the sword without impeding the deployment because of the length. This would probably be a more scimitar/Messer design given the inspiration and possibly would allow for the segmented blade to be balanced by having a more effective taper than a double edge. Possibly would even add strength
Indeed. It's a shame the US East is so far from Australia. I imagine it would be most viable for someone more local to them. (That said, I love his work, the baseball bats, nutcrackers, painting robot, and all that are amazing)
18:15 I am definitely with Tyranth on this one. Even if there was just 2 segments of the blade, I would think its pretty easy to break. With 4 segments, there is very big chance something will break when you use the sword.
The novel the wrecker by Clive Cussler had a excellent concept. The villain used a roughly one meter rapier as ambush/assassination tool. With a fast step running someone though from two meters away was devastating. Would be worth asking Titan's of CNC channel if they would be interested. EDM is the required process with CNC grinding to finish.
@@alt5494 no where in you comment did you mention the rapier being collapsible, although I hindsight I probably should have inferred that given the video's subject. My bad.
I think he might have got that idea from Acosta" El Estrago" from Smokin Aces, unlike normal movie/VG arm blades he had a spring-loaded rapier-like spike that came out of his sleeve, but it was only potentially the length of his forearm. Smokin Aces came out before that book, and Assassin's Creed.
I have one of those telescopic rods, and I have found that it makes a serviceable pool cue if you give it a bit of a twist after opening it. Doing so tightens the shaft a fair bit and makes it pretty solid. While I still wouldn't swing it at someone, it could make a functional emergency stabbing weapon if you added a sharp point to the end. I also found that applying a little bit of tension to the bottom of the "staff" prevents it from loosening and becoming less rigid. This can be done by just holding the bottom/wide end, or by wrapping something around it to prevent it from expanding.
When I thought of this, I also did it in the context of lightsabers, and I ended up with a few ideas. One was to lock the extensions in place with some kind of internal spring system to prevent them from being pushed back in. Then pulling the springs inward with some kind of string running up the length of the blade would allow the blade to be pulled back into the hilt. The other option was an active support solution using electromagnets, though I suppose normal magnets or inflating a tube with a liquid or even a gas could also work. If it's an electromagnet setup then you'd need to provide energy to keep the blade from falling back together. For the more passive case you'd need to have a container to store the gas/liquid at a higher pressure, then use that to inflate your sword to lock it into place, and then eventually move that substance back to wherever you kept it (or to just vent it out) to allow for the blade to collapse. While regular magnets would be about the same as relying purely on friction. They'd just be another barrier to prevent the blade from easily collapsing, but that'd also make pulling everything back together extremely difficult. Another active support option would be to constantly blast something at the top of the blade from the hilt. This would be sort of like using a gas or liquid at high pressure, but it'd be a constant cycle and thus the pressure would be more strongly focused at the very tip of the blade keeping everything from falling in during a stab. The obvious option for this would be to use water in a very similar way to how a pressure washer can be used to push something away. The more advanced version of this would be a particle accelerator within the handle and a decelerator along the length of the blade before it'd give the particles just enough energy to fall back toward the hilt to then repeat the cycle. We don't really have the tech for the more advanced option, but an active support based on pressurized water should work. Ultimately, I think the problem here is making something that's collapsible, but still capable of retaining it's expanded shape for the entire duration of the fight. We could try to solve that with purely compressive strength of the material as your design assumes... or we could try to solve it with tensile strength of the material by using something else to ensure the material remains maximally stretch out during the entire fight. I suspect it'll be easiest to go with the tensile approach.
A few examples I can think of, U.S. pilots in WWII were occasionally issued a folding machete, and the Italians did something similar with a folding bayonet. Both of these had the blade extend from the handle when folded, it was just a slightly shorter package. Also currently for sale in the U.S. is a butterfly knife style folding machete offer by a company named Gerber Gear (not to be confused with the baby food company). All of these are limited in how compact they can be by the length of the blade of course, but they are the best real world examples I have seen.
@TITANSofCNC would be a perfect machining channel to make something like this. Also also - @NjordArtisan has a series where he is making a Dishonored Folding Sword and a transforming sword into an axe. Good luck with this one! Could be amazing! Can't wait to se what you make next and for the carbon fiber project. Keep up the great work.
You could use a steel wire running along the length of the blade to keep its telescopic or hinged sections under tension, the tension should activate a mechanism to lock the telescopic sections into place or keep the hinges fully extended. You'd put a simple lever mechanism on the hilt to put a lot of tension on the wire (imagine something like a lockable bicycle brake handle on the hilt that could potentially double as a hand guard).
Sounds good in theory, but how much tension (=force) are we talking about here? Given enough force, wouldn't that essentially be a spring loaded grenade if anything breaks?
@@tabull8180 The amount of force depends on the locking mechanism. Assuming it's a telescopic blade the mechanism would be something on the inside that either extends a force outward to friction-lock two telescopic sections together, extends small locking bolts through two sections to lock them, or both. You'd spring load the mechanism so it unlocks automatically if it isn't under tension. I'd imagine a few hundred Newtons of force on the wire would be (more than) enough, and if the system fails it would implode and retract the blade rather than explode.
@@JerehmiaBoaz Thanks for clarification. Thinking about more, the breaking part issue is something that any desing have to be very aware. Essentially I was already thinking about the worst scenarion, but the whole point of this video is rather how make something that could actually be good and robust enough to work. You don't build something expecting it to fail. Overall your idea isn't too bad at all.
One thing I thought of immediately for a good design was the "Tian Po (Heaven's Fall)" sword from a movie I saw a long while ago called Seven Swords (released in 2005). About 10 years ago, a few companies decided to replicate and sell that sword, but it uses a scabbard and the handle is a bit short on it's own to conceal the whole blade, but if you made the handle and blade about the same length, you'd be able to hide the entire blade in the handle itself while still keeping the same function of the blade. I would say a good base length to start with would be about 15 inches (when the blade is hidden), since the blades of most katana are usually around 30 inches, so when it's fully extended it would be shorter than a katana, but a bit longer than the full length of a typical wakizashi. You could always go longer or shorter based on preference for either reach or concealability.
I should've also probably pointed out that the replicas you can find online use a push button located in the middle of the handle to allow the blade to slide through the handle, but you can put it near either end of the handle to allow the blade to slide in one direction to get as much of the blade out of the handle as possible if it's made with the handle being roughly the same length as the blade itself.
I REALLY appreciate the work that went into making this hoodie, so many creators I follow just end up slapping a logo or phrase onto stuff with a cheap print. the fact that it has actual stitching and looks like it wont wear to nothing/fall apart in a few months makes it worth the money. Just picked one up for myself! Im super glad its on a zippered hoodie as well, cause pullovers are meh. most creators only offer that style cause they just have a logo, so its great this is a design that is iconic yet still comfortable. nothing worse than sweating to death in a pullover you cant really take off at the moment. I love merch that is enough that someone who knows knows. heres hoping it lives up to my expectations, but if so, this is some S tier merch.
Great video as always! I'm no enginner, just a random thought about keeping a foldable blade with structure: What about a wire with tension? Held with a electric motor or something... Not possible in medieval times, but with today's tech?
Hey Shad, crazy idea from an American, and I know "make it explode/combust" is an accurate depiction of our mentality with weapons, but... Imagine an extendable sword that doesn't go back in afterward and maintains perfect rigidity by igniting some small chemical pockets that are designed to automatically tac-weld it together the moment it finishes extending. The blade would weld itself to the handle, and the blade segments together, and where you hold the blade would be made of heat resistant silicates akin to those used to make oven mitts. This kind of extendable sword would be a worst case scenario weapon for someone defending a structure with tight corridors such as a bunker, spaceship, or cave network rather than a weapon you'd regularly want to carry around. Very sci-fi rather than fantasy. Anyway, I'd love to hear what you guys think at Shadiversity about the idea!
I as an engineer see 2 possible ways to make this. A electric discharge mashine would be the cheapest technik, but it would take quite a lot of time and the low thickness could cause problems. But I would test it. The second technik would be a 3D printing System...but this is quite expensive.
I'm pretty sure it can be done with EDM, the smallest cavity that fit final segment is 1mm well with what can be done. Currently 3D printing makes to rough surface for this application.
Traditional Japanese sword masters made these things by hand. They took the void, put the steel along the void and hammered until they had the segment.
Hmm, Forge flat, then fold then pieces over to keep them hollow? would be hard to get the internal structure consistent (or hard to machine the inside of theses. Maybe machine out the core or each section, then weld the spine back in after?
Very hard to machine with precision. I wonder if you could press it though... As it's such thin section. Problem being the joining of the two parts without welding etc. maybe with a dummy internal former...
He does say "is weird" not "was weird". In context of the present time, yes it is weird for someone to wear a sword. The only time an average person probably wouldn't be surprised to see that is either a cosplay, actor, enthusiast, or similar situation. And that's assuming that it was obvious that such a role was in action. (In contrast, it generally isn't very weird for someone to wear a gun in the modern day.) If I understand correctly, swords in general are not illegal to bear but are subject to the same laws as any other tool that is explicitly a weapon. However, there may be an amplified implication of threat imposed by carrying a sword due to how the injuries caused by a sword are quite large and more visible compared to that of a gun and thus feel more scary than a gun. Although a gun will almost certainly be more lethal in any given encounter due to considerably greater range than a melee weapon and being equally deadly at close and longer ranges (being close enough to interfere with aiming doesn't make the gun less deadly, it just may reduce/increase the chance of you being hit by the bullets) with enough power to reliably one-shot-kill anyone or just spray multiple shots per second and kill via sheer amount of damage to the body (depending on model), guns have sadly become normalized in the public consciousness whereas swords may be viewed as an active threat of brutal harm: "Of course you carry an unobtrusive gun that I likely won't notice, it is 'only' for self-defense" vs "Why would you wear a (comparatively) bulky/awkward sword if you don't intend to attack someone in the first place?" May be a contrast of perception of threat due to visibility and pseudo-lethalness, I guess? Maybe like, you hold a gun and think, "oh, this is a gun but it isn't dangerous if I don't pull the trigger" vs holding an unsheathed sword and think "yikes, this sword is likely sharp and dangerous to everything, with just an accidental swing I could severely harm or kill someone!". Or something like that? I dunno, I'm no expert, it's just my observations. Anyways, none of that is to say that swords aren't quite deadly as well, only that in the end it "is weird for someone to wear a sword" in the modern day.
@@JarieSuicune I carry pistols daily so yes I know the laws with carrying. I would permit swords any day if my country was firearm restricted. Just as long as they look good.
What about something with flush pieces of the blade segmented with one or two thin metal cords in the core, so that it is normally spiraled up for more compact carrying but when the cord is pulled taut it forces the pieces into a straight solid blade? The cord(s) could be controlled via a motorized spindle in the handle so that it stays taut while in use? Perhaps the wires are soldered into the blade of the tip piece after assembly but the rest of the blade segments are loose, strung onto the wires. The cross section of the blade pieces could be slightly concave at the bottom and tapered at the top so they slot into each other the right way. 2 wires i think would help with this and they'd need to be thin so having two with their own grooves would make it stronger. The blade would be thicker and shorter than an ideal sword for sure but I think this could be worked with, and the edge would still be a straight edge unlike the baton style □□|=■=■=■=■=■=> □□|■■■■■> Cross Section straight on and side: ______ /\ /| /| |: | | | | | \/ \|_____\| Would need a custom sheathe as well to avoid it tangling or user injury from loose pieces
Going off of those collapsible practice swords an idea springs to mind from having to put together and regularly transport my moms walker The legs on it have these lil nubs that use a spring to push it outward and hold it into place in holes on the legs keeping it extended untill they are pressed in allowing the leg to collapse inside. They even have an internal cord to keep the leg completely coming off if the nub misses the hole from rotating in the leg and extends too far. Can also attest to it being structurally strong as it can hold the weight a person and take impacts as my mom regularly knocks it over and runs into things with it Now using the diamand cross pattern of a sword blade it will keep the nubs, one coming out on each side for stability and reassurance from it collapsing back easily, from missing the holes as it extends. Can also utilize the wider base of the blade to fit an internal track similar to a dresser drawer going up to the first two nubs when it extends to make the base stronger With the nubs keeping the blade locked it can easily be used for thrusts thus a similar design for a Rapier can also be implemented. For that design it can be possible to only have the final tip segment sharpened letting the lower part be made thicker to give it more rigidity for thrusting. And even dull it will still act as a sort of baton with the thicker steel if the thrust misses
For blade and edge, if you manufacture it using some solid steel alloy, and use electrical discharge machining (EDM) you can get pretty uniform cross sections, and still maintain material strength.
I thought through the final design process. High precision cnc-ing male and female parts per segment. Heat treating the steel before assembly. Threading each male part, having small self tapping screws. That would deal with the difficult hollow portion, then again, easier said than done. Unfortunately, I have no tools that can help with this. However I'm an ideas guy.
@@danielgudi7446 My bad, I tent to use steel as a flat term for metal. And heat treating before the screws. How I typed it was also in the steps of operations.
Consider the following; Take how Umbrellas function with their retractable pole, you can have interlocking latches that you have to push into the blade to retract the blade, and you just use a kind of spring mechanic inside the blade itself that locks everything in place. So you'll have to choose where these interlocking latches are on the blade and make room for it on the blade. The thickness of the steel and spring should make it a pretty solid modern sword for a retractable telescopic design.
What about a sword that's basically a really long folding knife, and you just hold it really low on the grip? It would be equivalent to having a sword with a ricasso that goes a third of the way up the blade or so, but do you really need a sword to be sharp all the way to the hilt? You can even have a folding cross guard halfway up the grip that makes you hold it that way but gives you the option to grip it higher up with your other hand so you can use it like a really short spear. And how short does it have to collapse to? If it's 32 inches extended, then it's around 16 inches collapsed, which is about the size of a dagger.
wire edm may be a method to manufacture the blade sections. it can cut deep and accurately in metal. as proof of concept you could cheaply 3d print one to check tolerances and basic mechanical function.
I love this. Very cool design that I'd really be ecstatic to see made, even if it seems likely not to hold up under hitting a solid object...that's ok though.
Looking at the last extending sword as a machinist, I have a few thoughts. First, it’s really long hollow metal with sharp internal corners. As is, it’s not happening on a mill, but it might be possible in a metal 3d printer if the less accurate tolerances that the process allows for are acceptable or a very creative stamping. If the back side of the blade(furthest from the edge) was open, you could mill it with a modified slitting saw, then try to dovetail the back piece in later. Also, if the interior cutout for the blade was square instead of going to a point, a normal slitting saw would probably be fine, and you could make the part of the blade interfacing with it square as well instead of a sharp edge that is hidden inside so wouldn’t cut anything anyways.
For all the various opinions about it, the Ultraviolet movie does this really well. Both Violet and the main bad guy have swords that can extend from a basic hilt. It works through the tech that I like to call "flat-space" storage. The difference between those swords and Shads design is the Ultraviolet versions are one solid blade. The extension mechanism itself that's stored inside the hilt also acts as the bracing and support to keep the blade in-line and prevent it from buckling at the point where blade meets hilt. Probably through having a MUCH longer blade and only extending around two-thirds or even just half of it outwards. The back-end of the blade would probably have something like a geared mechanism to extend, retract, and lock the blade in place, which would be far more structurally secure than just having a collapsing baton-style blade. Of course, now that I think about it, the other possibility is that they all just carry regular solid swords and just keep them inside flat-space storage until pulling them out for fighting, hammerspace-style. Personally, I prefer the first method. :D Violet is actually able to carry a HUGE amount of weapons in these little bracelets she wears on her wrists. It actually becomes something of a plot point when she walks into a security checkpoint and the scan reveals a virtual ARSENAL of weapons while the security guys just stare at her with jaws dropped. "Searching for concealed weapons...(alarm goes off)...number of weapons found...many." =^x^=
I designed a couple concealable swords a few years ago, I designed mine keeping in mind that the outermost 1/3rd of the blade was the actual most useful part of the blade: the outer third section of my telescoping design was a sharp blade, the middle section was sharp but too thick to cut well, and the innermost section was essentially a huge ricasso.
What about something like whip sword(Ivy Valentine from Soul Calibur probably most well-known) - solid blade segments joined by a wire or two going through the middle. While wire is loose it can be bent or rolled to be compact, but pull wire into handle to tense it up and it becomes straight and solid.
If retracting isn't an issue, use locking flanges at the base of each section deployed by spring that interface with the previous segment. Retracting would require clicking them into the previous segment.
The only individual person that I can think of that may be able to pull this off is the RUclipsr Stuff Made Here. If any of you guys see this you could try and reach out to him. Worst case scenario he says no, best case you could have an awesome collaboration.
If i had enough money i'd grab three brigandine hoodies: one as a gift to one of my brothers, another one to keep the way it is and the third one to experiment and see if i can transform into an actual brigandine
For your concertina sword it might make sense to prototype your (scaled) designs using 3D printed plastic parts that are relatively cheap and quick to produce. I imagine it would take multiple revisions and a lot of trial & error before you iron out all the design & build issues. After that you could then commit to steel. For locking the blade in the extended position - if it is made from spring steel then you could use a series of simple locking tabs in pairs, with one on each broad side of a blade section. Each of these would be a rectangular 3-sided tab cut out of the blade section's broad wall, with the 4th connected side facing forward along the blade. Each tab would be bent outwards slightly so that the edge of the tab is raised above the surface by ~2mm / the thickness of the steel wall. This is just enough so that when an inner section slides out it will lock strongly against the base edge of the previous section that contains it. This would require fairly precise positioning, cutting and bending. So whipping the sword outwards to extend it should also lock all the blade sections in place as each pair of tabs engages at the furthest extent. Each tab could be 2-3cm long and 2cm wide, or a good size to be able to comfortably press on with your thumb and forefinger. To collapse the blade you would squeeze in the two tabs on opposite sides of the blade until they are flush with the blade section wall and then carefully slide the inner blade section in, and then repeat this process for each pair of catches. This ought to be strong enough to maintain the extended sword blade for some light cutting and stabbing action, but would likely fail for anything more forceful than that. On the other hand, in such circumstances the entire blade would be at risk of buckling/failing under heavier forces, not just the locking tabs. Edit: The last smallest blade section being solid steel would be tricky though. That part may need a different locking mechanism.
Ive tryed making one of these, very hard with limited resources and well just trying to learn, i will re atempt to make my swords so i can test my very own count dooku and asaji ventress hilts (as well as mauul and some others)
There's a segmented sword in Brotherhood of the Wolf, that also has the segments connected by chain that can fly apart and you can use the sword kind of like a whip.
This seems like it would be right up the alley of the Stuff Made Here RUclips channel. He’s got all the tools, the brains, and the willingness to do sketchy stuff 😆
Grab the Limited Edition Brigandine Hoodie: shadiversity.junipercreates.com/channel/UCkmMACUKpQeIxN9D9ARli1Q/p/7825895882943
That's a really good idea! Wait, the rivets are embroidered? Not just a print? Incredible.
Reach out to Hacksmith. Maybe they would collab.
Do they come in other colours? I REFUSE to wear red!
Are the rivets metal, or just little patches?
Haha shad your modeling skills are beyond mystery
Thugs: "We _multiple clicks_ all have pen knives!"
Shad: "Well I _swish_ have a pen rapier!"
Crocodile Shad-Dee: “That’s not a pen knife…”
Percy Jackson has entered the chat
@@cebenifyHiccup Horrendous Haddock III has entered the chat with his Dragonblade.
Watching him try to open a spring-loaded rod made me realize why we don't spring-load bladed tools normally
You think that is crazy, check out the Russian ballistic knife. Crazy thing will fire the blade, via a blank cartridge, in the same manner as a grenade launcher. But it's the size of a small dagger.
You don't know about the whole OTF (out the front) knife industry? Companies like Microtech have perfected such tools.
@@Dang_Near_Fed_Up ah yes the jetstream sam style knife
Gun knife
That's part of why bans on switchblades are ridiculous, whatever one thinks about rights.
As a Dishonored fan, i would love to see a folding sword that actually works.
That is the coolest sword in video game history.
Big fan of that sword as well, I could never see how it fully worked but based of how Corvo spun it around made me think of a hybrid of a bowie/butterfly knife mixed with extended blades
@@dovahjaron I think someone made a 3d printed working replica of the sword.
there is a folding blade based on dishonered made by Njord Artisan metal and everything
@@zmogod1823 I gotta see it. Where?
One thing to keep in mind about extendable batons is that they're effectively one time use if they're actually used. Sure you can extend and retract them freely but if they're actually used to strike they often bend. Once bent they can be forced to retract again but then they don't freely extend. This is something police accept as "expendable". Your sword might have to take the same thing into consideration. If it's used in self defense it may effectively not be "reusable" but served its purpose.
I've never heard that before. Makes sense I guess. Better the baton than you
As far as I know it depends on the quality, what you hit and how much force you use, for example hitting the thighs still hurts enough to stop someone, but it will be soft enough to do no damage to your baton.
Some even come with a 2-year guarantee, which explicit state that what is not covered is: "gross damage caused by strikes against hard objects (e.g. stone, concrete, steel)" meaning that you can get a new one for free, if it is unusable after using it against a human/animal.
They are ones with a heavy spring with a weight for the tip. They don't bend as the spring absorbs the shock.
Idk, I have an extendable baton that’ll smash right through cinderblocks without bending.
I’ve been in law enforcement for five years and I’ve never heard anyone say that a baton is an expendable item. Sure, they break on occasion, but I’d be pretty pissed if they broke under common use. Everything breaks. Our squads and pistols break, but that doesn’t make them expendable items.
I’ve had an Asp Talon for most of my career and it has busted through many car windows and other hard objects with nothing but scratches.
But, for Shad and Tyranth; the Asp Talon is a perfect example of a telescopic design with a button lock that will keep it extended during a thrusting motion. Most batons are friction locks, and I’ve had other officers use my baton and try to close it by banging it on the concrete like they would a standard issue one. It has stood up to the abuse.
Is that an extendable sword, or am I just happy to see a new Shadiversity video?
Could be both
The perfect comment
Award for best joke of 2024 goes to…
You win the comments section.
😂
I'm so glad to see another shadiversity video, you guys brighten up my day every time.
Jōrg Sprave over at the Slingshot Channel designed, had manufactured, and sold (possibly still sells?) a pocket machete.
Gerber makes a balisong/butterfly-style machete called the "doubledown"
@@TheHanshotfirst I removed the quad-lock from the doubledown for one handed opening, and it is awesome.
Nice, the instant Legolas guy also makes hand to hand defense weapons.
@@valrondlet him show you its features
He just started building a double knife - two identical knives and each sheaths in the handle of the other. His “German Engineering” version extends and looks physically impossible.
Very excited to see the carbon fiber sword next week no matter if it's practical or not, love ya Shad, you're a really big RUclips inspiration for me and I wish Shadiversity the best!
NjordArtisan has working 1st stage prototype of collapsible Dishonored sword. Also, JoergSprave shown off "pocket machete", which not truly collapsible, but still worth a look.
I was going to recommend the Njord Artisan video to them too. Definitely the closest prototype to what they want I can think of
But due to German laws he couldn't use the most simple and efficient locking mechanism for his sword.
Was coming to the comments looking or this, just to confirm I didn't have to mention it.
How do they manufacture the Chinese practice swords? Sheet metal?
@@adorp most likely to be so
I LOVE how excited you are about all this stuff!!
I would be too, if I had a budget to actually attempt to build some of these things.
Extending swords or edge weapons are also a scifi/cyberpunk stapple.
Mantis Blades, which fold into the forearm, are my favorite melee weapon from Cyberpunk 2077.
@@azuredragoon2054 in CP2020 mine go to weapons were the wolver blades ^^, and the ripclaws in Shadowrun but i was thinking for the mantis blades though
A true stapple
Reminds me of something from an avali lore document that their swords are like olfa cutters that generate new blades via sci-fi bullshit
@@diggyrobinson5859 Nergigante from Monster Hunter: "I grow my own!"
The princess bride book is mint.
Ooooo and the storm light archive. Another good choice.
@@snipesrockanything else like the storm light archive?
2:51 OMG that scared the shhhh out of me aswell
After seeing that, all I can think about is that I want a Denn'bok, the Minbari Fighting Pike
So a thought to consider is to not solely retract into the handle.
You could have a very small sheath so your blades could be a little longer than your handle. It would potentially reduce the segment number, which would make it stronger.
Sword of Omens style in other words
The "sword" version of the "bottomless magazine" trope for guns. Instead of a handgun that seemingly never needs to reload and fires several dozens of shots from a single clip; this would be a full-sized sword that can be drawn from what seems like a dagger sheath. It's practically a cartoon trope, where a character has a tiny sheath on their hip, goes to draw the weapon, and just keep pulling out *more sword.* Honestly, I think that would be more intimidating than anything: drawing a 4-foot sword from a 6-inch sheath.
Shad. Engineer here. I highly recommend you look into the Gerber Doubledown or the Atropos balisword demon. The balisong style folding lock is very very strong (at large scale you can even do intermeshing gears or have a significant tang section held by the handles. It falls into the category of blades that would be as long as the handles (or longer with an extension like Joerg Spraves folding machetes if you want to save weight and add length) but it doesn't suffer any of the thrusting collapsing issues that telescopic designs or an OTF can have. I have it on very good authority that a lot of locking designs were tested for this sort of mid-range larger-than-a-knife but machete/large-bladed camp tool (or wakizashi-esque profile in the case of the demon) size blade and the balisong lockup won. You can also have a significantly thicker blade than your handles might suggest once held which is a downside of the telescopic design where the handle must be and remain larger than all the segments once deployed. This is present in the double down because folded it's only slightly wider than the blade but unfolded what were cutouts revealing the blade become a grip profile that can essentially be as small as you want. Just avoid making it way too high of an aspect ratio and from soft materials like Filipino baliswords which are much more prone to breaking. It also is significantly more practical to manufacture. It's still difficult but you don't have all the insane internal geometry of the telescopic system it's just a couple channels cut and a relatively standard blade.
Good idea.
Usually people make folding mechanisms for these things that rely on a single sturdy articulation point and a comparatively flimsy catch/latch (I say "usually", but I think I've only ever seen Njord Artisan actually attempting a folding sword). The balisong gets its stability from the fact that it uses 2 equally strong articulation points (at a considerable distance) to hold the blade piece. (While the direction perpendicular to the blade is constrained by the design of the hinge points themselves.)
It would even be possible to improve on that principle by offsetting the 2 articulation points on the blade (putting one further forward than the other). That would give you even greater stiffness against bending in one of the directions. (Put the blade of the sword on the side with the further forwards articulation point.)
And the two handle piece surfaces that meet when the blade is unfolded should be machined/structured in a way that they mesh together, in order to avoid them sliding against each other.
I think it should even be possible to make a 3-section balisong sword by using that "intermeshing surfaces" technique on both of the meeting surfaces - and you'd need some way to keep the pieces at the rear articulation area together. Obviously the articulation "area" where the singular front section meets the two middle sections will get in the way of it fully working like a sword, so it might be better to think about it as a spear/glaive with an added sharp section on the front part of the haft.
But a 3-section balisong seems like it would have the added advantages of unfolding even easier than a 2-sectioned one, since you don't have to turn the handle pieces inside out; and the advantage of it being easier to get the handle section to align in both the folded and unfolded arrangements when you significantly offset the hinge points forwards/backwards.
Also, in case anyone else wants to marvel at Joerg's creation: ruclips.net/video/JtGVtgS0PYA/видео.html
The concept artist Artigas created multiple illustrations of Tolkien Dwarves.
One of those invents a Dwarven Folding Spear designed for transport and combat in low-clearance tunnels that is basically a giant balisong knife.
Yes! I was thinking of giant balisong/butterfly knives, too. Like the one in Battle Angel Alita.
You can have low profile spring loaded buttons that pop out to prevent the extendable blade from going back in. Two on both sides in each segment. It will also give it extra structure. And for you to sheath it again, you have to press the buttons back in.
Special Chief could be designed to press those buttons to collapse it as you store it
My favorite version of the "collapsible sword" is a plate-pinch design. This contains two plates that are angled and hollow as well as solid hardened tip that can fit inside. How this works is the hollow plates are being held by tension via the handle they can hide into and the tip is shaped so the base of it has a shaped knob that gets stuck inside the two hollows. This sword is gravity/momentum extension style and because of the the tension in the handle it actually holds well.
"(Regarding telescopic designs) They use the Force to keep them extended."
This must be why he was specifically thinking of lightsabers.
A lightsaber beam constantly generates its own force the same way that a jet of water generates a force.
@@beskamir5977 did you miss the joke? JEDI? THE FORCE??????? MAY THE FORCE BE WITH YOU?
@@SoloGamingZA nope, I didn't miss anything. I saw the joke and disregarded it cause it was so incorrect to how a lightsaber is shown to function. At most the crystal uses the Force in some way to stabilise the beam. Else Han couldn't have used Anakin's lightsaber in ep5.
This is a subject I love. Collapsing and expanding weapons are one of my favorite things and I like having them in the stories I write. The big one is in my fantasy medieval story where the Royal Families and their Royal Family Knights have these weapons called Expand Weapons (Not completely attached to the name) They are easy because it’s magic. The casing of the weapons hold a pocket dimension inside that holds all the blades, cross guards, handles or shafts. So when they’re fully expanded they’re even stronger than regular weapons, because magic.
I'm a big fan of transforming swords that open up and or emit energy like the ones in Xenoblade Chronicles 2.
Sounds like you recreated the Sword of Omens, sort of.
@@Dang_Near_Fed_Up … sure
There is a telescoping rapier at the arms museum in Leeds, fascinating piece.
And Tyrenth ... push-ups.
totally ordered a hoodie straight away! awesome stuff!
From using a telescoping pole for cleaning and similar tasks, leave more than you think inside each joint. If you extend the sections fully, there is 100% torque on the joints, more angle develops, and it's easy to break them. If you leave about 6" within the previous section the forces are more side to side within the joint, the extra length left inside the previous section stops it from being able to develop such a high torque right at the joint and break the joint.
16 foot telescoping paint pole etc at Lowe's in the USA for reference for the type of pole. But most any telescoping pole or antenna works similarly, if you leave a reasonable bit back within the previous section it is much stronger than fully extended.
So cool hoodies, gonna request other colors. May not be historically accurate, but a nice purple would be awsome!
A royal purple would be killer
agreed@@wrongeden3420
The TFT player in me demands that there be an equal, but opposite blue one. XD
i think if i was going to design an extendable sword, my first thought would be to have a shorter blade with an above average length handle, such that about half the blade would be able to retract into the handle, and then have a sheath that goes over the rest of the blade and clips onto the handle to keep it in place. you'd still be able to get good reach with the length of the handle but it would also be able to shrink by maybe a quarter of it's total length. depending on the size of sword you want that could pretty easily be concealed under the flap of a jacket.
I would love to see a video soon explaining the different types of steel and how they are made.
is that a mistake on the size chart where the 3xl is listed at 30 inchs but the 2xl is 38 inchs , going by pattern the 3xl should be 40 inch
2 videos in a row that are in my thread w/in 10 min of release. That’s awesome, something has changed in the algorithm
I was thinking the same thing!
Likewise. It used to be I MIGHT get recommended like every third or fourth video.
If something did happen in the algorithm I'm glad it did, because I can now listen to shad talk about extending his hard sword.
Great job. I love your new content
Hey shad!
Consider contacting Adam Savage, host of mythbusters, in his channel Tested. He is a precision machinist and i bet he will be able to not only create but also improve any design if he agrees to work on it.
I imagine money might be the issue there. Unless Adam just wants to help out from passion and not charge top dollar (naturally there'd still be some costs, and the fact that they're both popular youtubers would mean there's some content to be made from it) to our still-probably-suffering-from-the-algorithm Shadenites.
This is a great idea. It would probably help sell him on it if you pitch it as a proof of concept test to see if it'll even work properly as a durable blade and they could run Mythbusters style tests on it to see how it holds up compared to a standard blade against various things like a flesh analogue, types of armor, types of shields, etc. You could make a video creating the sword from Adam's side, and then have Shad do the Mythbusters style durability tests.
I assume Adam *could* build this, but this kind of metalwork isn't really his specialty. This design would either need to be welded up from machined halves or, possibly, cut on a wire EDM. Who knows, worst case if he has any interest at all would be he recommends some good machinist contacts. The problem I see is the cost to setup for machining one of these and finding out it fails quickly. You could also get it printed in steel for prototyping 'sake, though obviously the strength would hardly be a 1:1 with solid metal.
@kio you have a valid point but we won't ever know if we don't ask. :)
I doubt it, as soon as Adam gets any inkling of Shads convictions. Adam is a pretty big shitlib from what i got.
I just love shads excitement.
Njord Artisan might be a good partner to work with for this project. Hes made trick and collapsible weapons with success in the past.
Good job on the design. I think it could perform in between each of your estimates as a light weight weapon. Difficult to make, yes, perhaps a lost wax casting would work. Precision is a must and polishing even the inner surface would be necessary. You could make the tip piece and perhaps the handle and the first section but the second and third would be quite a challenge. 3D printing might one day be an option but it would still need to be polished on the inside. Good luck.
Put a solid knife on the end of a sturdy extending pole/stick that gets to sword-length. This forms a mini-spear that might even have some cutting potential.
You're obsessed with "sword" because that's awesome, but "mini-spear" might actually be practical.
I agree. There’s a reason swords have stayed in one typical form despite many style variations. They work well for their use and too varied of designs don’t do the sword job as well.
This design I think there would be too many areas for stress to multiply and break the whole thing.
I've seen some cool wire EDM precision cutting thing that cuts holes and corresponding inserts from solid blocks of steel with so much precision, that when an insert is placed inside the hole all the way flush, you can not see the gap between the parts, nor even feel it with your fingers.
I think that might be the only way to make those hollow blade segments out of a solid steel. you could try folding the steel into the box shape but the precision would suffer
I think if you did an otf blade that folds in half you could theoretically have a secondary otf mechanism for a pin of some kind (preferably rectangular for better durability) to create rigidity. The primary difficulty of this design would likely be incorporating the second otf mechanism. I've always wanted to make something like this as a proof of concept I just don't have the tools to do it yet.
You could still make a serviceable extending sword with just 1 otf mechanism. Take inspiration from the "Sword of Omens" from Thundercats and don't fully hide the blade. Make it look like a fixed blade knife/dagger but after unsheathing you flip the switch and the hidden length of the blade pops out.
Been missing these office conversations videos from the channel. Really enjoyed this banter, Shad & Tyranth. Keep up the passion and doing what you love, we’ll be here watching!
Thanks for sharing your passion and lets see if internet will do its magic of putting peoples together. ^^
always love the 30 minute to an hour format. it feels much more immersive
The shorts are for TikTokkers with brain rot, as far as I am concerned.
I've been pondering this extending sword question since childhood, same as the rest of you. I'm so glad yall made this video. Love the designs and serious discussions. Some day guys, there will be a design that works. Hope I live long enough to see it
I just noticed that you have the same horse riding knights as I did when I was a kid! the red one and the yellow and blue one. Oh instant nostalgia!
Im imagining trying to build this as a preindustrially trained blacksmith and it is brain breaking.
Allot of jigs & making a good press... the spine would need to be thicker to take rivets & so the segments would be considerably smaller per segment.
or at least thats my take after about 30 seconds of thinking on it as a hobbyist who has gone through some blacksmithing schooling.
That Gambeson hoodie would look good over a chainmail hoodie.
nah its to go over your REAL chainmail
A chain mail t shirt. Two hoodies would make you too hot.
@@tankythemagnorite9855 The chain has to be a full shirt. Hoodie adds the hauberk.
and with enough layers of hoodies, you're as well-armored as if you were in a gambeson.
This is. Really neat concept! Perhaps it would be even more possible if the amount of segments were reduced?
I'm thinking something like a 2 and a half handed or 3 handed sword (think the LOTR elven swords). That would mean each segment could have significant length while the handle alone is still very manageable in size (just bordering the limit of manageable)
With that you could get a similar length with only 2 blade segments, and maybe having the hollow parts be thicker?
Perhaps the strong of the blade would even be able to be supported in the middle with some pins or beams, while the top would have a central cutout, but would still be a solid piece.
The other nice part is that if you wanted your folding cross guard. You could still grab the grip of the sword without impeding the deployment because of the length.
This would probably be a more scimitar/Messer design given the inspiration and possibly would allow for the segmented blade to be balanced by having a more effective taper than a double edge. Possibly would even add strength
Maybe a telescopic falchion with a teardrop cross-section? It would have better stiffness than a diamond cross section.
I always love just how blunt they are to each other about disagreeing and still manage to make such great content with different opinions
This feels like a project Stuff Made Here would take on
Indeed. It's a shame the US East is so far from Australia. I imagine it would be most viable for someone more local to them.
(That said, I love his work, the baseball bats, nutcrackers, painting robot, and all that are amazing)
18:15 I am definitely with Tyranth on this one. Even if there was just 2 segments of the blade, I would think its pretty easy to break.
With 4 segments, there is very big chance something will break when you use the sword.
The novel the wrecker by Clive Cussler had a excellent concept. The villain used a roughly one meter rapier as ambush/assassination tool. With a fast step running someone though from two meters away was devastating. Would be worth asking Titan's of CNC channel if they would be interested. EDM is the required process with CNC grinding to finish.
Glad to see another Cussler fan. The Wreckers teliscopic sword was the first thing I thought of seeing the video title!!!
A one meter rapier is normal sized.
You wouldn't need any fancy CNC or edm equipment to make one.
@@DH-xw6jp Definitely fancy equipment to build a full size rapier that collapses down to seven inches.
@@alt5494 no where in you comment did you mention the rapier being collapsible, although I hindsight I probably should have inferred that given the video's subject. My bad.
I think he might have got that idea from Acosta" El Estrago" from Smokin Aces, unlike normal movie/VG arm blades he had a spring-loaded rapier-like spike that came out of his sleeve, but it was only potentially the length of his forearm. Smokin Aces came out before that book, and Assassin's Creed.
Hoodies look awesome guys! I put in an order right away
The classic Shadiversity 3d model video.
I have one of those telescopic rods, and I have found that it makes a serviceable pool cue if you give it a bit of a twist after opening it. Doing so tightens the shaft a fair bit and makes it pretty solid.
While I still wouldn't swing it at someone, it could make a functional emergency stabbing weapon if you added a sharp point to the end. I also found that applying a little bit of tension to the bottom of the "staff" prevents it from loosening and becoming less rigid. This can be done by just holding the bottom/wide end, or by wrapping something around it to prevent it from expanding.
Apparently five people were the first people to comment on this video. Shad's content is so amazing it lets people break the laws of nature!
These hoodies look really good! Might grab one :D
I really want Shad to win the lottery so we can get this, the Titan Sword, All Star, Etc, All The Amazing Stuff in his wonderful brain!
When I thought of this, I also did it in the context of lightsabers, and I ended up with a few ideas.
One was to lock the extensions in place with some kind of internal spring system to prevent them from being pushed back in. Then pulling the springs inward with some kind of string running up the length of the blade would allow the blade to be pulled back into the hilt.
The other option was an active support solution using electromagnets, though I suppose normal magnets or inflating a tube with a liquid or even a gas could also work. If it's an electromagnet setup then you'd need to provide energy to keep the blade from falling back together.
For the more passive case you'd need to have a container to store the gas/liquid at a higher pressure, then use that to inflate your sword to lock it into place, and then eventually move that substance back to wherever you kept it (or to just vent it out) to allow for the blade to collapse. While regular magnets would be about the same as relying purely on friction. They'd just be another barrier to prevent the blade from easily collapsing, but that'd also make pulling everything back together extremely difficult.
Another active support option would be to constantly blast something at the top of the blade from the hilt. This would be sort of like using a gas or liquid at high pressure, but it'd be a constant cycle and thus the pressure would be more strongly focused at the very tip of the blade keeping everything from falling in during a stab. The obvious option for this would be to use water in a very similar way to how a pressure washer can be used to push something away. The more advanced version of this would be a particle accelerator within the handle and a decelerator along the length of the blade before it'd give the particles just enough energy to fall back toward the hilt to then repeat the cycle. We don't really have the tech for the more advanced option, but an active support based on pressurized water should work.
Ultimately, I think the problem here is making something that's collapsible, but still capable of retaining it's expanded shape for the entire duration of the fight. We could try to solve that with purely compressive strength of the material as your design assumes... or we could try to solve it with tensile strength of the material by using something else to ensure the material remains maximally stretch out during the entire fight. I suspect it'll be easiest to go with the tensile approach.
''Titans of CNC'' could probably do this using EDM.
A few examples I can think of, U.S. pilots in WWII were occasionally issued a folding machete, and the Italians did something similar with a folding bayonet. Both of these had the blade extend from the handle when folded, it was just a slightly shorter package. Also currently for sale in the U.S. is a butterfly knife style folding machete offer by a company named Gerber Gear (not to be confused with the baby food company). All of these are limited in how compact they can be by the length of the blade of course, but they are the best real world examples I have seen.
Looking forward to the pocket falchion.
@TITANSofCNC would be a perfect machining channel to make something like this. Also also - @NjordArtisan has a series where he is making a Dishonored Folding Sword and a transforming sword into an axe. Good luck with this one! Could be amazing! Can't wait to se what you make next and for the carbon fiber project. Keep up the great work.
You could use a steel wire running along the length of the blade to keep its telescopic or hinged sections under tension, the tension should activate a mechanism to lock the telescopic sections into place or keep the hinges fully extended. You'd put a simple lever mechanism on the hilt to put a lot of tension on the wire (imagine something like a lockable bicycle brake handle on the hilt that could potentially double as a hand guard).
Sounds good in theory, but how much tension (=force) are we talking about here? Given enough force, wouldn't that essentially be a spring loaded grenade if anything breaks?
@@tabull8180 The amount of force depends on the locking mechanism. Assuming it's a telescopic blade the mechanism would be something on the inside that either extends a force outward to friction-lock two telescopic sections together, extends small locking bolts through two sections to lock them, or both. You'd spring load the mechanism so it unlocks automatically if it isn't under tension. I'd imagine a few hundred Newtons of force on the wire would be (more than) enough, and if the system fails it would implode and retract the blade rather than explode.
@@JerehmiaBoaz Thanks for clarification. Thinking about more, the breaking part issue is something that any desing have to be very aware. Essentially I was already thinking about the worst scenarion, but the whole point of this video is rather how make something that could actually be good and robust enough to work. You don't build something expecting it to fail. Overall
your idea isn't too bad at all.
One thing I thought of immediately for a good design was the "Tian Po (Heaven's Fall)" sword from a movie I saw a long while ago called Seven Swords (released in 2005). About 10 years ago, a few companies decided to replicate and sell that sword, but it uses a scabbard and the handle is a bit short on it's own to conceal the whole blade, but if you made the handle and blade about the same length, you'd be able to hide the entire blade in the handle itself while still keeping the same function of the blade. I would say a good base length to start with would be about 15 inches (when the blade is hidden), since the blades of most katana are usually around 30 inches, so when it's fully extended it would be shorter than a katana, but a bit longer than the full length of a typical wakizashi. You could always go longer or shorter based on preference for either reach or concealability.
I should've also probably pointed out that the replicas you can find online use a push button located in the middle of the handle to allow the blade to slide through the handle, but you can put it near either end of the handle to allow the blade to slide in one direction to get as much of the blade out of the handle as possible if it's made with the handle being roughly the same length as the blade itself.
I REALLY appreciate the work that went into making this hoodie, so many creators I follow just end up slapping a logo or phrase onto stuff with a cheap print. the fact that it has actual stitching and looks like it wont wear to nothing/fall apart in a few months makes it worth the money. Just picked one up for myself! Im super glad its on a zippered hoodie as well, cause pullovers are meh. most creators only offer that style cause they just have a logo, so its great this is a design that is iconic yet still comfortable. nothing worse than sweating to death in a pullover you cant really take off at the moment.
I love merch that is enough that someone who knows knows. heres hoping it lives up to my expectations, but if so, this is some S tier merch.
It's good to see your videos pop up on the front line of the feed again ❤
Great video as always! I'm no enginner, just a random thought about keeping a foldable blade with structure: What about a wire with tension? Held with a electric motor or something... Not possible in medieval times, but with today's tech?
Probably want a monomolecular wire, though that is a bit difficult to source.
now THAT is some good merchandising! it is right up my alley of clothes to wear, im absolutely going to buy that hoodie
Hey Shad, crazy idea from an American, and I know "make it explode/combust" is an accurate depiction of our mentality with weapons, but...
Imagine an extendable sword that doesn't go back in afterward and maintains perfect rigidity by igniting some small chemical pockets that are designed to automatically tac-weld it together the moment it finishes extending. The blade would weld itself to the handle, and the blade segments together, and where you hold the blade would be made of heat resistant silicates akin to those used to make oven mitts. This kind of extendable sword would be a worst case scenario weapon for someone defending a structure with tight corridors such as a bunker, spaceship, or cave network rather than a weapon you'd regularly want to carry around. Very sci-fi rather than fantasy.
Anyway, I'd love to hear what you guys think at Shadiversity about the idea!
They look Awesome!! Great video!
I love those hoodies!
I as an engineer see 2 possible ways to make this. A electric discharge mashine would be the cheapest technik, but it would take quite a lot of time and the low thickness could cause problems. But I would test it. The second technik would be a 3D printing System...but this is quite expensive.
I'm pretty sure it can be done with EDM, the smallest cavity that fit final segment is 1mm well with what can be done.
Currently 3D printing makes to rough surface for this application.
there are some 3d printers that can print metal
Traditional Japanese sword masters made these things by hand. They took the void, put the steel along the void and hammered until they had the segment.
Hmm, Forge flat, then fold then pieces over to keep them hollow? would be hard to get the internal structure consistent (or hard to machine the inside of theses. Maybe machine out the core or each section, then weld the spine back in after?
Use a mandrel to keep the internal form
Very hard to machine with precision. I wonder if you could press it though... As it's such thin section.
Problem being the joining of the two parts without welding etc. maybe with a dummy internal former...
Great merch idea ^^
Oh, glad Icy Mike got a shout out \o/
"It is weird for someone to wear a sword."
🤨
COMING FROM THE MAIN HOST OF A SWORD AND MEDIEVAL CHANNEL!?
He does say "is weird" not "was weird". In context of the present time, yes it is weird for someone to wear a sword. The only time an average person probably wouldn't be surprised to see that is either a cosplay, actor, enthusiast, or similar situation. And that's assuming that it was obvious that such a role was in action. (In contrast, it generally isn't very weird for someone to wear a gun in the modern day.)
If I understand correctly, swords in general are not illegal to bear but are subject to the same laws as any other tool that is explicitly a weapon. However, there may be an amplified implication of threat imposed by carrying a sword due to how the injuries caused by a sword are quite large and more visible compared to that of a gun and thus feel more scary than a gun. Although a gun will almost certainly be more lethal in any given encounter due to considerably greater range than a melee weapon and being equally deadly at close and longer ranges (being close enough to interfere with aiming doesn't make the gun less deadly, it just may reduce/increase the chance of you being hit by the bullets) with enough power to reliably one-shot-kill anyone or just spray multiple shots per second and kill via sheer amount of damage to the body (depending on model), guns have sadly become normalized in the public consciousness whereas swords may be viewed as an active threat of brutal harm: "Of course you carry an unobtrusive gun that I likely won't notice, it is 'only' for self-defense" vs "Why would you wear a (comparatively) bulky/awkward sword if you don't intend to attack someone in the first place?" May be a contrast of perception of threat due to visibility and pseudo-lethalness, I guess?
Maybe like, you hold a gun and think, "oh, this is a gun but it isn't dangerous if I don't pull the trigger" vs holding an unsheathed sword and think "yikes, this sword is likely sharp and dangerous to everything, with just an accidental swing I could severely harm or kill someone!". Or something like that?
I dunno, I'm no expert, it's just my observations.
Anyways, none of that is to say that swords aren't quite deadly as well, only that in the end it "is weird for someone to wear a sword" in the modern day.
@@JarieSuicune
I carry pistols daily so yes I know the laws with carrying.
I would permit swords any day if my country was firearm restricted.
Just as long as they look good.
Wearing a sword in public would probably get you arrested pretty quickly in a lot of countries as well.
What about something with flush pieces of the blade segmented with one or two thin metal cords in the core, so that it is normally spiraled up for more compact carrying but when the cord is pulled taut it forces the pieces into a straight solid blade? The cord(s) could be controlled via a motorized spindle in the handle so that it stays taut while in use? Perhaps the wires are soldered into the blade of the tip piece after assembly but the rest of the blade segments are loose, strung onto the wires. The cross section of the blade pieces could be slightly concave at the bottom and tapered at the top so they slot into each other the right way. 2 wires i think would help with this and they'd need to be thin so having two with their own grooves would make it stronger. The blade would be thicker and shorter than an ideal sword for sure but I think this could be worked with, and the edge would still be a straight edge unlike the baton style
□□|=■=■=■=■=■=>
□□|■■■■■>
Cross Section straight on and side:
______
/\ /| /|
|: | | | | |
\/ \|_____\|
Would need a custom sheathe as well to avoid it tangling or user injury from loose pieces
Forget a sword I want a Ranger Denn'Bok
Babylon 5!
Shake it hard, twice …
Never heard of this, but now I need it.
In Valens name I live for the one I die for the one
@@JoRoq1look real close to the flat end get it right up next to your face so you can see the image. . .
(Loved that episode)
Those hoods are awesome!!
Why don’t you try reaching out to the hacksmith and see if they can make it for you?
Yeah!
That seems within their wheelhouse.
Going off of those collapsible practice swords an idea springs to mind from having to put together and regularly transport my moms walker
The legs on it have these lil nubs that use a spring to push it outward and hold it into place in holes on the legs keeping it extended untill they are pressed in allowing the leg to collapse inside. They even have an internal cord to keep the leg completely coming off if the nub misses the hole from rotating in the leg and extends too far. Can also attest to it being structurally strong as it can hold the weight a person and take impacts as my mom regularly knocks it over and runs into things with it
Now using the diamand cross pattern of a sword blade it will keep the nubs, one coming out on each side for stability and reassurance from it collapsing back easily, from missing the holes as it extends. Can also utilize the wider base of the blade to fit an internal track similar to a dresser drawer going up to the first two nubs when it extends to make the base stronger
With the nubs keeping the blade locked it can easily be used for thrusts thus a similar design for a Rapier can also be implemented. For that design it can be possible to only have the final tip segment sharpened letting the lower part be made thicker to give it more rigidity for thrusting. And even dull it will still act as a sort of baton with the thicker steel if the thrust misses
For blade and edge, if you manufacture it using some solid steel alloy, and use electrical discharge machining (EDM) you can get pretty uniform cross sections, and still maintain material strength.
I thought through the final design process.
High precision cnc-ing male and female parts per segment.
Heat treating the steel before assembly.
Threading each male part, having small self tapping screws.
That would deal with the difficult hollow portion, then again, easier said than done.
Unfortunately, I have no tools that can help with this. However I'm an ideas guy.
Sadly steel will warp under heat
@@danielgudi7446 My bad, I tent to use steel as a flat term for metal. And heat treating before the screws. How I typed it was also in the steps of operations.
Consider the following;
Take how Umbrellas function with their retractable pole, you can have interlocking latches that you have to push into the blade to retract the blade, and you just use a kind of spring mechanic inside the blade itself that locks everything in place. So you'll have to choose where these interlocking latches are on the blade and make room for it on the blade. The thickness of the steel and spring should make it a pretty solid modern sword for a retractable telescopic design.
What about a sword that's basically a really long folding knife, and you just hold it really low on the grip? It would be equivalent to having a sword with a ricasso that goes a third of the way up the blade or so, but do you really need a sword to be sharp all the way to the hilt?
You can even have a folding cross guard halfway up the grip that makes you hold it that way but gives you the option to grip it higher up with your other hand so you can use it like a really short spear.
And how short does it have to collapse to? If it's 32 inches extended, then it's around 16 inches collapsed, which is about the size of a dagger.
I'm excited to see the carbon fiber sword. I've been waiting for it for what feels like forever!
wire edm may be a method to manufacture the blade sections. it can cut deep and accurately in metal. as proof of concept you could cheaply 3d print one to check tolerances and basic mechanical function.
If you had a telescoping sword a one way folding latch that pops out after extending would prevent it from folding back in on stabs
I love this. Very cool design that I'd really be ecstatic to see made, even if it seems likely not to hold up under hitting a solid object...that's ok though.
As a new subscriber, I'm enjoying your content! Thank you.
Looking at the last extending sword as a machinist, I have a few thoughts. First, it’s really long hollow metal with sharp internal corners. As is, it’s not happening on a mill, but it might be possible in a metal 3d printer if the less accurate tolerances that the process allows for are acceptable or a very creative stamping. If the back side of the blade(furthest from the edge) was open, you could mill it with a modified slitting saw, then try to dovetail the back piece in later. Also, if the interior cutout for the blade was square instead of going to a point, a normal slitting saw would probably be fine, and you could make the part of the blade interfacing with it square as well instead of a sharp edge that is hidden inside so wouldn’t cut anything anyways.
For all the various opinions about it, the Ultraviolet movie does this really well. Both Violet and the main bad guy have swords that can extend from a basic hilt. It works through the tech that I like to call "flat-space" storage. The difference between those swords and Shads design is the Ultraviolet versions are one solid blade. The extension mechanism itself that's stored inside the hilt also acts as the bracing and support to keep the blade in-line and prevent it from buckling at the point where blade meets hilt. Probably through having a MUCH longer blade and only extending around two-thirds or even just half of it outwards. The back-end of the blade would probably have something like a geared mechanism to extend, retract, and lock the blade in place, which would be far more structurally secure than just having a collapsing baton-style blade.
Of course, now that I think about it, the other possibility is that they all just carry regular solid swords and just keep them inside flat-space storage until pulling them out for fighting, hammerspace-style. Personally, I prefer the first method. :D
Violet is actually able to carry a HUGE amount of weapons in these little bracelets she wears on her wrists. It actually becomes something of a plot point when she walks into a security checkpoint and the scan reveals a virtual ARSENAL of weapons while the security guys just stare at her with jaws dropped.
"Searching for concealed weapons...(alarm goes off)...number of weapons found...many." =^x^=
I designed a couple concealable swords a few years ago, I designed mine keeping in mind that the outermost 1/3rd of the blade was the actual most useful part of the blade: the outer third section of my telescoping design was a sharp blade, the middle section was sharp but too thick to cut well, and the innermost section was essentially a huge ricasso.
What about something like whip sword(Ivy Valentine from Soul Calibur probably most well-known) - solid blade segments joined by a wire or two going through the middle.
While wire is loose it can be bent or rolled to be compact, but pull wire into handle to tense it up and it becomes straight and solid.
If retracting isn't an issue, use locking flanges at the base of each section deployed by spring that interface with the previous segment. Retracting would require clicking them into the previous segment.
The only individual person that I can think of that may be able to pull this off is the RUclipsr Stuff Made Here. If any of you guys see this you could try and reach out to him. Worst case scenario he says no, best case you could have an awesome collaboration.
If i had enough money i'd grab three brigandine hoodies: one as a gift to one of my brothers, another one to keep the way it is and the third one to experiment and see if i can transform into an actual brigandine
In a bad spot atm. I've been binge watching all your latest videos I've missed. Thx for the content guys, love u :')
For your concertina sword it might make sense to prototype your (scaled) designs using 3D printed plastic parts that are relatively cheap and quick to produce. I imagine it would take multiple revisions and a lot of trial & error before you iron out all the design & build issues. After that you could then commit to steel.
For locking the blade in the extended position - if it is made from spring steel then you could use a series of simple locking tabs in pairs, with one on each broad side of a blade section. Each of these would be a rectangular 3-sided tab cut out of the blade section's broad wall, with the 4th connected side facing forward along the blade. Each tab would be bent outwards slightly so that the edge of the tab is raised above the surface by ~2mm / the thickness of the steel wall. This is just enough so that when an inner section slides out it will lock strongly against the base edge of the previous section that contains it. This would require fairly precise positioning, cutting and bending.
So whipping the sword outwards to extend it should also lock all the blade sections in place as each pair of tabs engages at the furthest extent. Each tab could be 2-3cm long and 2cm wide, or a good size to be able to comfortably press on with your thumb and forefinger.
To collapse the blade you would squeeze in the two tabs on opposite sides of the blade until they are flush with the blade section wall and then carefully slide the inner blade section in, and then repeat this process for each pair of catches.
This ought to be strong enough to maintain the extended sword blade for some light cutting and stabbing action, but would likely fail for anything more forceful than that. On the other hand, in such circumstances the entire blade would be at risk of buckling/failing under heavier forces, not just the locking tabs.
Edit: The last smallest blade section being solid steel would be tricky though. That part may need a different locking mechanism.
Ive tryed making one of these, very hard with limited resources and well just trying to learn, i will re atempt to make my swords so i can test my very own count dooku and asaji ventress hilts (as well as mauul and some others)
There's a segmented sword in Brotherhood of the Wolf, that also has the segments connected by chain that can fly apart and you can use the sword kind of like a whip.
This seems like it would be right up the alley of the Stuff Made Here RUclips channel. He’s got all the tools, the brains, and the willingness to do sketchy stuff 😆