Designing the Ultimate Dual Action Assassins Creed Hidden Blade (Episode 3)

[@TheEasterBasket0432]

I literally cannot wait to have a whole ass & legit hidden blade and im dazzled by the process

[@imbatman6454]

dudes got an arc reactor in his chest... OP Iron man stuff......... man, you really are soo good at this.....

[@CrashMakerspace]

Stoked you liked the Arc Reactor 😅 I do try to pursue my passion in my free time the best I can!

[@YummYDelicious0]

Well I need to download patreon ASAP

[@lions_roar0716]

Your competition ain't even close my man, huge inspiration, makes me want to start my own project 😂, You gotta do the phantom blade now when you finish this 😂

[@CrashMakerspace]

Good to hear! Has been a lot of time the past few months deriving this mechanism. Thanks for sharing, and you totally should dude, I share my projects to give other ideas for their own!

[@HGW1776]

Love to see your progress!!

[@CrashMakerspace]

Thanks for watching along dude!

[@HGW1776]

@@CrashMakerspace inspiring to see, when I was your age I wish I was as dedicated as yourself.

[@TheRealRomansThirteen]

Elchechin used a magnet in his hidden blades xiphoid model without using a ring string mechanism. I called it the Pinocchio mechanism because it had no strings. This design is incredible because you're using magnets basically on a feed ramp and it works like a little seesaw. It's a whole different world. I do hope one day someone will put out a hidden blade xiphoid model like Abonudes original with the 90° Amnara did something but it's not quite the same because it uses rubber bands.

[@bersanguzel2263]

I love this. Magnificent !

[@bersanguzel2263]

Stable and not like a toy made of cardboard. Amazing. After using super glue, I found what I was looking for.❤❤❤

[@CrashMakerspace]

Glad you found my channel dude!

[@kanadokomentarzy]

Love your progress and ideas! Your designs are absolutely pionieering the hidden blades to a new extent. I have a question, will you make them with actual full on materials when you've finished perfecting them? I would love to see them in action!

[@CrashMakerspace]

Sweet, glad you’re liking the designs so far! I plan to, just doin plastics since it’s faster and cheaper for testing out my ideas! To ensure that magnetics are not interfered with, the blade would be a paramagnetic material like Titanium

[@nevelletg2787]

This is so far the best assassins hidden blade I’ve seen out there. Have you tried thinning the blade and shortening the length of the mechanism to get something more comfortable and concealing?

[@CrashMakerspace]

Glad you like it! Check out my Episode 4 for a thinner and more concealable model that I derived after this one; might be closer to a mechanism you’re looking for

[@soloxcan]

The rib in the blade also adds stiffness to it

[@neevasken6054]

I’m definitely going to have to start posting my progress, too many people are getting in on the niche for me to resist

[@briansolorzano8693]

would that center ridge compromise it's functionality as a blade?

[@CrashMakerspace]

The ridge helps it be stronger by preventing lateral deformation, against soft target no issues. If trying to stick into something hard, then you would get more pinching of the blade so pros & cons!

[@briansolorzano8693]

@@CrashMakerspace oh interesting

[@crystallakedood]

Does the magnetic component need to exist if the teeter-totter is just ramped in opposing directions (such that it's always pushed down on one side depending on whether the blade is in/out)? I feel like I'm missing something, but also I feel like that could simplify the design a slight bit, while keeping the brilliance of the teetering mechanism intact. I really do like that innovation and your systems overall, but unless I'm missing a detail, I feel like there's maybe one less assembly step that way.

[@CrashMakerspace]

For sure! So the alternator, is pulled up rather than pushed, since the cable’s only chance to determine the state of the alternator is once they return to their initial positions after eject/retract. And by pulling up; they now grab thereby ensuring the correct state through eject/retract pull-charge. If we pushed it down at the starting positions, then as we charged; the alternator would flip half way as the cables wouldn’t be able to retain its position through motion

[@mrshotx1083]

Super cool progress, question tho, had you ever come up with an idea to make the extended hidden blade?, Years ago I tried with wood for making small models(idk how r those called) when 3d printers were non existant, I kinda did it, but it was really unstable, plus the blade in my opinion wasn't wide enough, and the whole model was way too big to be "hidden" lol. Now seeing you work with magnets it is just amazing for locking-almost frictionless mechanisms that I would have love to come up with in my younger times. Anyway, I'm loving the progress you are having

[@CrashMakerspace]

Thanks! Without special materials, it'd be very difficult to get a two tier blade to be strong and not be very thick (some other designs do this, but its with a ratio mechanism so the blade starts coming out as soon as your finger moves a little which isn't like the games). Imindeepan has a two tier but its brittle, really bulky, and has to be ratio instead of ejecting suddenly once a trigger distance on the ring-pull is reached I essentially did the original AC blade design since a single blade can be super thin while being strong and effective still

[@CorruptionManX]

Excellent design, but I have some doubts. Due to the system being composed of magnets, wouldn't having the hidden blade all in metal interfere with its operation? And if it were made of metal, I believe these elastics wouldn't work, or if they did, they wouldn't last long.

[@CrashMakerspace]

Thanks for the comment! Magnets would attract to the metal and be just fine! The blade is specifically designed to be millable. Metal is actually easier to run in an OTF as the mass absorbs energy far better than light plastic which has trouble storing energy after the elastics are done. This is primarily where folks have issues with plastic OTFs as friction plays such a high role with plastics.

[@EnyoNomad]

Would it be at all possible to use magnets (perhaps a magnetic ring worn on one or two fingers) to activate the blade deployment, to remove the hand tether? Awesome progress!

[@CrashMakerspace]

Thanks! Well the string is used to charge up energy progressively as you pull, hence the long charge distance so it’s not just unlocking, it’s pulling the slider forward hence not feasible without a cable to finger

[@cj18137]

I'm interested in how you're going to handle the heavier weights of a metal blade (If you get that far with the experiments) super cool videos tho

[@CrashMakerspace]

It’s actually much harder to get reliable systems with these plastic prototypes! Hence why most folks have no success with plastic OTFs. The mass of a metal blade allows for more effective transfer of elastic energy and the weight of the blade carries through frictional losses much easier.

[@gapman8357]

@@CrashMakerspace Wouldn't you also be able to make certain parts smaller/thinner due to the stronger material, thereby making a smaller blade? I would also be interested in seeing how you would go about making a segmented blade, to allow for a longer blade length when it's fully extended.

[@CrashMakerspace]

@@gapman8357the actual limiter here is the 3mm neodymium magnets in the slider! So even with steel or titianium, you would only be able to shave off about 0.1mm so essentially nothing at all

[@steamlegend1909]

@@CrashMakerspace metal OTF hidden blade is on a nother level believe me i tried it , yes like you said the mass of of a metal blade allows more effective transfer of elastic energy but it also require harder spring ,harder to pull , but i think your design will works great on metal , you can check imdeepain reborn , he's a hidden blade craftman too ,he makes real metal hidden blade

[@CrashMakerspace]

@@steamlegend1909 correct in that higher mass needs more energy to throw which this system accounts for (if you notice this blade throws itself a bit too hard and bounces back before locking sometime from this very issue with the lightweight plastic). I’m able to get by with less force needed that’s traditional otf and yet have stronger ejections by doubling the charge distance. So it the system has better recovery, less tension needed, and longer time of acceleration!

[@nightloner7009]

when is the next episode of the assassins creed blade project

[@CrashMakerspace]

The next one is a ways off yet, I had some personal time the past couple weeks to visit family which set me back here-the compliant based mono-layer build is proving exceptionally challenging

[@ckidslag3903]

It took me soo long to realised you had the ark reactor in the entire video. I'm cant wait to see the final design.

[@CrashMakerspace]

Haha, since the reactor project turned out well I’ve just been popping it on in some vids and it’s fun to see how people don’t notice it until the end 😅

[@zacklothamer9533]

So what is the purpose of going with the string mechanisms vs a wrist actuated switch? Is it just not possible to create a blade/mechanism with enough inertia to self load a spring when using plastic?

[@CrashMakerspace]

Do you mean like a lever attached to the base of the palm to load energy rather than from a finger?

[@zacklothamer9533]

​@@CrashMakerspaceyes like a palm actuated switch that runs a mechanism more similar to a double action otf knife those are very thin and reliable but they rely at least in part on the weight of the blade to completely extend and lock in place

[@CrashMakerspace]

@@zacklothamer9533 OTF mechanisms rely on push-eject and pull-retract which is far simpler since you push/pull in the desired blade direction, hence them being able to be so thin. But a palm action could work if you derived a way to ratio up the distance without adding bulk! For large blades (unlike pocket otf) you need a long charge distance (palm you’d be looking at only about 10mm distance that would then need to impose 40+ mm charge distance on slider)

[@Zygal_]

It's insane to me that you designed this in blender and not a CAD program like Fusion360

[@CrashMakerspace]

Yea haha all I use is Blender and it works fine for me! It's free, runs great and gets the job done! You just gotta keep dimensions/angles in your headspace, but with creative reference pointing you can create engineered parts quickly I've found.

[@arkopal4374]

do you use just pla material to print all the parts or some other materials...and also how do you get rid of friction as I made an otf hidden blade but it's not working properly cause of friction...keep making these videos man...they are fantastic

[@CrashMakerspace]

Yep just plain ole PLA since it’s cheap & easy to prototype with. I give all parts between 0.1 & 0.2mm play for proper fits that don’t wiggle but don’t have frictional losses. I also design special bevels and angles and key points around parts to reduce bindings in these fast acting systems

[@jaxrobinson3890]

@@CrashMakerspace Are you printing at a 100% infill, or something less than that?

[@CrashMakerspace]

@@jaxrobinson3890 Just 15% gyroid for my prototypes! I'd go thicker if doing production cosplay, but as I rip through parts I don't want to use more filament than I need to

[@jaxrobinson3890]

@@CrashMakerspace ah, that's not bad! What do you think you'll aim for with the production models?

[@lgforte]

I'm thinking about buying the project... 1 made of plastic for cosplay and another made of metal... is it possible to print on metal with everything working?

[@CrashMakerspace]

The goal would actually be CNC! So the blade is designed specifically to be millable

[@Ravengroft]

When is the next video ? Episode 4

[@CrashMakerspace]

It’s on my list! I’d do it on the compliant mechanism that I revealed on Instagram :) maybe next week?

[@pedrosiqueira5235]

Dude that’s awesome!!! When will we see the “oxidic” material version??? Probably spelled that wrong, not a native speaker 😂

[@CrashMakerspace]

Well… that one is being tricky to get running reliably and I’m making big updates to feasibility maps weekly, so it’ll likely be a bit until I show that one! Haha and no problem it’s “auxetic” and most native English speakers don’t know that word either 😂

[@sultandanish3029]

Do you use blender for all of your modelling? I find the size doesnt translate exactly to the print

[@CrashMakerspace]

I do yea haha-interesting, for me it’s pretty much darn perfect even for hardware spec bearings and such

[@micsab1901]

Bonjour ou puis-je trouver le fichier stl s'il te plaît

[@endercrafts9056]

Why do you use Blender for mechanical modeling? As a user of both, I would prefer Fusion 360, which is also free.

[@CrashMakerspace]

I've just always used Blender and can rip along so fast with it just on my laptop without an external mouse (I do all my modeling at coffee shops on the weekends). Which parts of Fusion would you prefer over blender typically?

[@endercrafts9056]

@@CrashMakerspace Fusion is made for these kind of purposes, it is procedural so you can modify stuff easily. It also has easily accessible parameters which is crucial for designing these kind of stuff.

[@klauserji]

i think rawice design involving gears is better

[@CrashMakerspace]

No problem with you likin another build better! His designs are bulkier and certainly much thicker due to using the gears. The main 3 properties I’m trying to design around are making it the thinnest, ensuring quad locking, and then having it eject at the trigger distance we’re rawices design moves in/out as you love your finger around

[@klauserji]

@@CrashMakerspace yeah it's a trade off for sure, springloaded otf hidden blades are more mature design since it's the one that people have been exploring-experimenting-perfecting, since the imdeepainreborn days (afaik he's one of the first prominent youtuber hidden blade maker), but i think rawice511 gear design is more robust and durable, just my opinion tho.