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 The Assassin Extension Knife

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SINZA
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PostSubject: The Assassin Extension Knife   October 15th 2008, 2:44 pm

First topic message reminder :

I'm going to start a new post for this new weapon design.
PLEASE KEEP THIS POST ON TOPIC. DISCUSS THIS DESIGN ONLY PLEASE.
We seem to have so many it just gets worse when they are mixed together.

..................................................................................................................

Recieved my 'Assassin's Extending Knife' in the mail today.
It was $135.00 + $10 to have it sharpened.

Description:
The Assassin Extension Knife locks into place with a simple slide.
A release button allows it to slide and retract.
Attaches easily to your Assassin vambrace.
• Overall: 19-1/8"
• Wt: 1 lb/4 oz
• Blade: 9" long, 5/8" wide, 3/16" thick

Buy it here:
http://www.atlantacutlery.com/atlantacutlery/detail.aspx?ID=1946
or
http://www.windlassstudios.com/p-76-assassin-extension-knife.aspx

Here it is out the box...smells like oil.


Closed


Extended


The blade and sleeve.


Close up of the blade. Rounded tip to be a safe prop....it's a easy fix on the belt-sander.


The sleeve and front.


Here's the button lock. Very simple, this is all you really need guys!!



Opened up. Here's what you guys have been waiting for!!!! And it's simple!









How the flex cable is attached to the blade.


How the sleeve is attached to slide plate.


But how does it all work?!?!?! So simple....


It's so basic it's almost embarrassing.
If this is the first of this design I'd love to see really nice version made really strong.
It's great for what it was made for, a costume prop or addition to a collection.
That's why it has a rounded tip. It would be easy to make it a sharp point on the belt sander if you wanted.
I can't see it taking too much abuse before it broke or bent.
As it is it came without the lock spring, so I had to open it up to fix it with one of my springs.
Not a real big deal, but I wasn't happy about it until it was fixed.

It's a little big...but looking at it I really think it could be done without the top half of the 'box'.
If you re-positioned the lock this might be able to be made half thickness. That would make a big difference.

Can it be made automatic? Semi-automatic?

Maybe.
I could see a few different ways of redesigning this, maybe with springs....maybe with a lazy-tong...or both.
The cable and pully extension system is so simple, it's how our curtains used to work as a kid.

Is it worth the money?!?! That is up to you to decide. I know I'm happy I have one!!

O.k......did I cover it all??? Any questions??

Now....on to the redesigns and the project builds!!!!


Last edited by SINZA on November 26th 2009, 2:04 pm; edited 3 times in total
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PostSubject: Re: The Assassin Extension Knife   November 24th 2009, 2:00 pm

On another design i saw not related to this design it looked like it was somehow connects to ur tendons in ur arm because if u look real close in the game u see the guy hold his fingers a certain way and when its not being used his hands look normal.
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PostSubject: Re: The Assassin Extension Knife   November 24th 2009, 2:36 pm

Hmm..... sounds..... like that could be painful Rolling Eyes

But i think the biggest problem is coming up with a way to get the damn mechanism to open AND close using one hand. And then you have to think about how practical the design is so that, if you just happen to be wearing it in your local super market or something, you dont have a 13" knife come shooting out of your sleeve when you reach out to grab something.
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PostSubject: Re: The Assassin Extension Knife   November 24th 2009, 2:46 pm

instead of going into ur body connecting to ur tendons on the outside and add and extra safety feature to so when its not being used and its in the sleeve its somehow locked so u have to press an extra button to open the lock to open it all the way
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PostSubject: Re: The Assassin Extension Knife   November 24th 2009, 3:12 pm

Good plan. Safety switch! ITS SO OBVIOUS NOW LOL. The tendon idea is creative... but technically challenging. Especially when compared to a wrist movement kinda thing. I keep leaning towards something that "pulls" when you pull your wrist back, and then when you make a fist and relax your wrist, and mechanism would "flip-flop" and when you flex your wrist a second time, you still "pull" on your switch, but the blade retracts instead.

(if that made sense)
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PostSubject: Re: The Assassin Extension Knife   November 24th 2009, 5:04 pm

Okay, so, say I'm completely new to all these mechanics. How would I go about making a ring/cable activated hidden blade? One that would be about as sturdy as a typical pocket knife.
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PostSubject: Re: The Assassin Extension Knife   November 24th 2009, 6:46 pm

@TheNightAngel

That depends... Do you want double action or single action?
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PostSubject: Re: The Assassin Extension Knife   November 25th 2009, 5:22 pm

I don't even know what those mean, but I'm assuming one is only extends automatically, and the other is automatic in and out?
Well Both would be good.
Like, if it was extended, and I could pull the ring and let gravity slide it back in, that would be perfect.
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PostSubject: Re: The Assassin Extension Knife   November 25th 2009, 5:38 pm

Well.... as for letting it slide back in.... that sounds about as challenging as doing Double Action (Automatic in&out). But you an automatic wrist blade then comes out when you pull the ring and then you have to manually cock the blade back to put it away, isnt THAT difficult to make. You just need some machining tools.
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PostSubject: Re: The Assassin Extension Knife   November 25th 2009, 5:39 pm

But an automatic wrist blade that comes out when you pull the ring and then you have to manually cock the blade back to put it away, isnt THAT difficult to make. You just need some machining tools.***
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PostSubject: Re: The Assassin Extension Knife   November 25th 2009, 7:33 pm

THERES NO REASON TO TALK IN ALL CAPS!!!!1!!!1!! also don't post about your xiphoid in another thread unless its relevant, like design ideas and the such.
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PostSubject: Re: The Assassin Extension Knife   November 26th 2009, 3:09 am

I hope this is kinda on topic, I got mine in today everyone and wow. They made mine so dam cheaply. mine isn't evil painted with a reflective shine like Sinza's. Also inside seems even more cheaply built as well. I umm sorta didn't see that cable lock and unscrewed the side one <.<. but thanks to your pic I see why the blade isn't coming out anymore lmao. But while tinkering with that I took the slide out and played with the blade going into the sleeve. I see a good locking mech can go right behind the blade making it have more power to pierce. If I can find a way to bring it out with a ring/ cable it will be silent as hell and probably pretty good to use "if it was legal" lol. Tomorrow I want to sand or grind it to a sharp point though to see if the metal can Perice threw a tree a little without getting bent at the tip. other than that the metal for the blade seems stiff and doesn't bend like I thought it would.

I just wish I knew how to put a dam good edge on a blade though, one that is almost razor sharp. An edge that can slice a throat. Like in the ACII trailer xD. I know different hidden blade but still, no harm in making the old one just as good ;D. Well till my OTF blade comes in the mail I'll be playing with this design. No work till this Sunday so plenty of time for fun >:3
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PostSubject: Re: The Assassin Extension Knife   November 26th 2009, 12:35 pm

S3kShUn8 wrote:
Good plan. Safety switch! ITS SO OBVIOUS NOW LOL. The tendon idea is creative... but technically challenging. Especially when compared to a wrist movement kinda thing. I keep leaning towards something that "pulls" when you pull your wrist back, and then when you make a fist and relax your wrist, and mechanism would "flip-flop" and when you flex your wrist a second time, you still "pull" on your switch, but the blade retracts instead.

(if that made sense)
Good Plan.But everyday you are constantly flexing and rewlaxing ur wrist so will somehow add and extra movement in their
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PostSubject: Re: The Assassin Extension Knife   November 26th 2009, 1:56 pm

i got a pretty good idea just now.... instead of the string being the release.... why not make it a safety? and as for the release....

[+____o___]

the plus sign will be the release button, and the "o" is a ball bearing. They both inside a tube represented by the brackets. to release the blade, you pull your wrist back to turn the safety off, and jerk your arm forward and back like he does in the game. duh

:DDD
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PostSubject: Re: The Assassin Extension Knife   November 26th 2009, 2:39 pm

OK!! good to go! i figured it all out... in my head Very Happy just dont have a mechanism to lock the blade in place. and i also didnt consider a blade "hood" or w/e it is. But its mechanically simple and seems like it'd be sturdy hopefully it'll work... im not an artist but i'll try to draw up some plans and post em on here. look forward to hearing from yous guys.
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PostSubject: Re: The Assassin Extension Knife   November 26th 2009, 4:02 pm

ineed more plans for spring knife plz send them to me
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PostSubject: Re: The Assassin Extension Knife   November 26th 2009, 7:18 pm

Good hope you get them up soon so i cacn possibly try to build it but i hope i can understand it i just need to get more smarter in how to understand desingns Crying or Very sad
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PostSubject: Re: The Assassin Extension Knife   November 26th 2009, 9:11 pm

Yeah..... I can never really understand people's drawings or designs. But I'll try to cook sommething up that is really simple. And my "designs" will be more like.... suggestions and guidelines :p I miss good 'ol paint cuz im on a mac and all I have is photoshop. And my hand drawings..... suck.
I'll see if I can have it on here by midnight EST

HAPPY THANKSGIVING!
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PostSubject: Re: The Assassin Extension Knife   November 28th 2009, 2:34 am



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PostSubject: Re: The Assassin Extension Knife   November 28th 2009, 5:19 am

Watch Universal Soldier Regeneration trailer, there is a hidden blade. Just thought I'd let ya's know
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PostSubject: How a Double Action knife works   November 28th 2009, 6:04 am

Snows wrote:
Ok can someone please explain to me how would any mechanical system that does not involve a small electrical motor could possibly achieve the retraction motion. .... So correct me if i'm wrong but it just seems physically impossible. I'm just a newb so if anyone actually has some way the correct me please cause i don't want the dream to die.

Thats EXACTLY what i used to think. But you're thinking about it wrong. Basically, whats happening with a DAOTF is that when you slide the switch, you build a potential in the spring and then once you push the switch all the way the potential is released, unlike ordinary OTF or automatic blades where the potential in gained when the blade is closed manually.

Its counter-intuitive, but the input of potential energy for the spring comes from your finger when you slide the switch.
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PostSubject: Re: The Assassin Extension Knife   November 28th 2009, 2:58 pm

S8 has explained how a DAOTF work well. In a DAOTF, the reciprocating (alternating backwards and forwards) motion actually comes from the wielder of the weapon. All the spring does is store the energy and release it all at once to "kick" the blade either in or out.

However converting a unidirectional linear motion (pulling a string in the same direction all the time) into a reciprocating one (causing the blade to alternately extend and retract) is a lot more complex than that of a simple DA OTF.

But it can, in fact, be done mechanically. There is at least one schematic that employs reciprocating mechanics floating around in the forums. And I'll post mine once I have the some of the finer details worked out. But rest assured it can be done... wolvie
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PostSubject: Re: The Assassin Extension Knife   November 28th 2009, 3:40 pm

These designs I have seen are good but useless if you ever need to use it for self defense OR if you just want a bad ass working model, but I think i have fully perfected my design it will allow you to launch the blade by thrusting your fist downward it allows you to stab and cut things(as hard as you want), BUT you can still retract the blade by simply thrusting your elbow downward or backward. With this design you can punch as hard as you can, run, and do acrobatic/parkour and the blade will NOT activate, but with a simple thrust of you hand downward it will activate
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PostSubject: Re: The Assassin Extension Knife   November 28th 2009, 11:55 pm

automotion wrote:
On another design i saw not related to this design it looked like it was somehow connects to ur tendons in ur arm because if u look real close in the game u see the guy hold his fingers a certain way and when its not being used his hands look normal.

THERE WAS NOTHING ATTACHED TO ALTAIRS BONE STRUCTURE. HE WORE A RING ON HIS MIDDLE FINGER WITH A STRING ATTACHED TO THE TRIGGER BUTTON AND HIDDEN UNDER HIS PALM. WHEN HE FLICKED HIS WRIST BACKWARDS, THE TENSION ON THE STRING PULLED THE TRIGGER AND RELEASED THE BLADE. I HAVE NO IDEA HOW HE REATRACTED IT THOUGH.
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 4:00 am

kjun13 wrote:
automotion wrote:
On another design i saw not related to this design it looked like it was somehow connects to ur tendons in ur arm because if u look real close in the game u see the guy hold his fingers a certain way and when its not being used his hands look normal.

THERE WAS NOTHING ATTACHED TO ALTAIRS BONE STRUCTURE. HE WORE A RING ON HIS MIDDLE FINGER WITH A STRING ATTACHED TO THE TRIGGER BUTTON AND HIDDEN UNDER HIS PALM. WHEN HE FLICKED HIS WRIST BACKWARDS, THE TENSION ON THE STRING PULLED THE TRIGGER AND RELEASED THE BLADE. I HAVE NO IDEA HOW HE REATRACTED IT THOUGH.

Well, if one looks closely in the game, you can't see a special wrist motion. The blade just springs out as if it was moved with Altair's thoughts. I thought about tensing up your arm muscles, but then the blade would probably be activated any time anywhere when you need your arm. Now I think the developers haven't quite thought about how this blade could work in real. And to make a working Assassin's Creed hidden blade, that works without moving your wrist or finger is quite difficult I think Wink

And the construction pictures of this blade with the ring on the little finger don't coincide with the game. Altair keeps his fingers clenched. You can also see a very good animation of the blade in this (very cool Wink ) video at 00:45:
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 4:24 am

can someone send me the assassins knife blade plans sword


Edit Answer by Admin: The plans for the Extension Dagger are on this post on earlier pages. There is no perfect design for the Assassin's Creed dagger if that is what you ask for. - SINZA
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 9:25 am

I think with a bit of tweeking, my idea will work just fine :) instead of having one string to pull you have two, one that goes under your hand regularly like we all already understand, and a second one that is attached to a pully. So if you can imagine the strings are attached to an over sized DAOTF, then when you flex your wrist up, it pulls the switch forward (we all understand this concept already), but when you make a fist the top string with the help of a pully, pulls the switch backwards. Sure you cant make a fist and punch things without the blade retracting, but you can do the open palm motion assassination that you use in the game.

And then in my idea, the locking...... things.... cant remember the exact name for them lol. but they are activated by a ball bearing inside that is activated when you jolt your forearm downward. And depending on which way your wrist is positioned, will determine if the blade retracts or extends.

As i said, only problem is you cant punch things while the blade is out.
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 12:42 pm

S3kShUn8 wrote:
I think with a bit of tweeking, my idea will work just fine :) instead of having one string to pull you have two, one that goes under your hand regularly like we all already understand, and a second one that is attached to a pully. So if you can imagine the strings are attached to an over sized DAOTF, then when you flex your wrist up, it pulls the switch forward (we all understand this concept already), but when you make a fist the top string with the help of a pully, pulls the switch backwards. Sure you cant make a fist and punch things without the blade retracting, but you can do the open palm motion assassination that you use in the game.

And then in my idea, the locking...... things.... cant remember the exact name for them lol. but they are activated by a ball bearing inside that is activated when you jolt your forearm downward. And depending on which way your wrist is positioned, will determine if the blade retracts or extends.

As i said, only problem is you cant punch things while the blade is out.

OMG... you almost have my exact design(just not as good) wow this is crazy if you need help I can show you, ohh and also my design offers more protection because with yours if you stretch your hand the blade come out with mine you must thrust it forward no magic involved(it is this special mechanism I have created) I would have NO problem in helping you. My device has a mechanism that depending on if you thrust your fist downward or if you thrust your elbow downward or backward you will retract of extend the blade, but no matter how hard you punch it is impossible to activate

EDIT: oh yeah and you can stab things, the cool part is even though the blade is locked in place I use gravity(and a special mechanism) to retract it, no strings or pulleys
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 2:46 pm

mgrung wrote:
because with yours if you stretch your hand the blade come out with mine you must thrust it forward no magic involved....if you thrust your elbow downward or backward you will retract of extend the blade, but no matter how hard you punch it is impossible to activate


ummm... idk maybe im not presenting my idea correctly... because the blade only comes out when you stretch your wrist AND flick your forearm down at the same time. The only reason you cant punch with mine is that your wrist is in the retract position and the shock from the punch will active the locking mechanism.

as for flicking your elbow... that sounds a bit... idk what the right word is LOL but it doesnt sound as appealing as having a design that opens and closes with as little different motions as possible.

And also, the point of this whole thing is to design something that you basically just slip on your forearm. idk what your design looks like, but if you could post some pictures or try to describe it in detail.... And after you post your design I think it might be best to compare ours together and come up with a compromised build. We could really make this thing happen cheers
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 2:53 pm

would there be any way to make the bit that extends the blade, be able to be connected to wire which connects to a ring you could have around your finger and depending on how far you would bend your hand back, the more the blade would come out? and then when you relaxed your hand the blade retracts back since the wire is being retracted due to your hand being bent back to its proper position

(sorry if this has already been discussed or if my wording seems a bit muddled) bacon
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 2:57 pm

@Doudomida


Its probably possible, just less practical. wouldn't you rather have it fully extend and fully retract automatically?
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 3:09 pm

S3kShUn8 wrote:
mgrung wrote:
because with yours if you stretch your hand the blade come out with mine you must thrust it forward no magic involved....if you thrust your elbow downward or backward you will retract of extend the blade, but no matter how hard you punch it is impossible to activate


ummm... idk maybe im not presenting my idea correctly... because the blade only comes out when you stretch your wrist AND flick your forearm down at the same time. The only reason you cant punch with mine is that your wrist is in the retract position and the shock from the punch will active the locking mechanism.

as for flicking your elbow... that sounds a bit... idk what the right word is LOL but it doesnt sound as appealing as having a design that opens and closes with as little different motions as possible.

And also, the point of this whole thing is to design something that you basically just slip on your forearm. idk what your design looks like, but if you could post some pictures or try to describe it in detail.... And after you post your design I think it might be best to compare ours together and come up with a compromised build. We could really make this thing happen cheers

Let me explain a bit more, first off thrusting your elbow downward is not hard and is simple, imagine you are grabbing on to something and lighting tugging on it. So the design uses a small motor to quickly launch and retract the blade. I have a special mechanism, when you thrust your arm downward it moves a block that will hit a button(there are some stuff with magnets and other stuff to keep it safe and working) it will send a quick flash of electricity to the motor, the motor will launch the blade into place. When you thrust your elbow downward it hits another button that gives the REVERSE voltage which causes the motor to go in reverse. Just imagine you thrust out your blade by thrusting your hand downward, stab some shit than easily put it back in my thrusting your elbow downward or backwards, it is pretty cool. It sure beats manual retraction

If you want a better explanation go to my thread/topic I made

Exotic Automatic » WRIST BLADE PROJECTS » NEW double action hidden blade idea
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 3:40 pm

This is my first post here, as i sparked an interest from a friend who wanted me to help him design an Ezio Auditore da Firenze costume for halloween '10. I might just go as Altair (ibn La'Ahad) and ive been doing a bit of thinking on making his hidden blade functional, as well as outwardly true to the sketches and hi res pics.



fig 1 is the blade with a DAOTF blade's butt end.

fig 2 is the second section with the DAOTF internals in a cutaway view showing the locking bars. this also has a rear end like a DAOTF blade's butt end.

fig 3 is the third section with DAOTF internals in a cutaway view showing the locking bars.

fig 4 shows the mounting unit which straps to the forearm. It has the scissor jack as in the sketches. the red area shows where section 3 connects to the jack, but is connected to the mounting unit by the sides where sliders should smoothly move it up and down. probably with something the likes of a desk drawer unit.

Now here is where it gets theoretical. In order to open a DAOTF you must push forward on a switch right? good. now then, my design presents 2 main problems.

1. how can we make the scissor jack extend let alone lock in position, and then recede and lock.

2. how can we reverse the direction of activation on a DAOTF design.

solving these two problems will give us something that will in essence, have a domino effect.

keep in mind that these DAOTF mechanisms will have an activation button on them facing the hand.

the action of extending the scissor jack and thus section 3, will move section 3's activation button past a small lip at the edge of the mounting housing, catching it and holding it as section 3 continues forward to activate section 3's DAOTF mechanism. at the same time, the switch will move past that small lip once activated and out into open air. (keep in mind the buttons will be on the hand side of the blade, not the open side.)

the sudden springing forward of section 2 from activating section 3 will make the button on section 2 move past a lip on section 3 that will activate section 2's DAOTF mechanism, engaging the knife.

in order to close the device, one must merely retract the scissor jacks, thus making section 3's button move forward, resecting section 2, which thereby resects the blade in the same fashion, and all the buttons once activated, will slide past each respective lip and back into thier housings.

comments?
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 3:47 pm

@mgrung

You're design sounds interesting, but we're really trying to avoid using any electric parts and trying to use pure mechanics. However, im not trying to be a negative-nancy :p I'd still love to see your design brought to life. I just had another idea for a method of retracting/extending the blade. It involves a sort of "hydraulic system".

Just a thought, but if you made a glove that had a "sac" filled with air or fluid, and it was connected to a tub that lead to a button that released the locks that hold the blade in place, so when you close your hand it pushes the fluid/air down the tube, applies pressure to the button and releases the blade.

We've got a zillion ideas LOL just a matter of choosing some and building it! oh god i wanna build one!
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PostSubject: Re: The Assassin Extension Knife   November 29th 2009, 4:15 pm

S3kShUn8 wrote:
@mgrung

You're design sounds interesting, but we're really trying to avoid using any electric parts and trying to use pure mechanics. However, im not trying to be a negative-nancy :p I'd still love to see your design brought to life. I just had another idea for a method of retracting/extending the blade. It involves a sort of "hydraulic system".

Just a thought, but if you made a glove that had a "sac" filled with air or fluid, and it was connected to a tub that lead to a button that released the locks that hold the blade in place, so when you close your hand it pushes the fluid/air down the tube, applies pressure to the button and releases the blade.

We've got a zillion ideas LOL just a matter of choosing some and building it! oh god i wanna build one!

Thats a cool idea BUT the button would have to be a momentary switch so the motor doesn't keep trying to spin and not be able(because the blade is already locked) it will overheat. so that would kinda defeat the purpose because you must have your hand clenched the whole time(which would be good for a forearm blade but still annoying) Umm I dont know why every one in this forum is against electronics, if they are well built they are simpler, better, and actually more compact. I see your concerns with the whole mechanism I made where you must slightly thrust your hand and elbow to either retract or extend the blade, but that is much easier than manual retraction AND it actually feels better(atleast for me) to launch the blade, you know and not simply stretch your palm or clench your hand. It feels more intuitive and natural, like if you saw a real hidden blade and put it on you would imagine you thrust your hand out to activate it. If you can PLEASE explain to me why supposedly electronics are bad(or why you guys tend to avoid them). Also if you dont want to have to thrust your arms just take away that mech and add 2 buttons on a glove instead. Last but not least electronics are far superior in most cases then mechanical. My hidden blade I am making will have a 5 inch blade, the estimation of the whole length of the hidden blade will be BETWEEN 6 and 7 inches. To tell you the truth I am 12 years old, and kinda short and this will fit my forearm perfectly(first part of arm W/E) considering that part of my arm is 8 1/2 inches long

Oh and by the way technically speaking air IS a fluid
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PostSubject: Re: The Assassin Extension Knife   November 30th 2009, 1:12 am

For the scissor extention, im going to incorporate another hidden blade design i saw in a different AC topic, but only so far as moving the third section forward.



fig 1: closed scissors with gears, string, and a ring. again, pink area is where third section connects to the scissor platform, and the purple is the return spring, tensioned at opening.
fig 2: ring pulled, gears rotate, and the scissors open, stretching return spring.

this action for only a small distance of a few inches makes for the power needed to initiate the double action domino effect and if a string enough return spring is used, that in itself will initiate the resection.

now im thinking that a lock could be achieved in a fashion in which the scissor jacks are extended and then locked, and then further stretching causes them to unlock and then recede under the spring's power.

i still need to know if anyone can figure a way to reverse the activation of the DAOTF mechanisms.
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PostSubject: Re: The Assassin Extension Knife   November 30th 2009, 8:41 am

Air is a fluid? sooo there is liquid air out there o.o... I had to google it and yea it is a fluid. I use to think a fluid is only something that is a liquid. I guess I classified the two as the same. Thanks for the info on that ;D. Both ideas sound nice. I have a question for both of you though, if you was to make it, would you be able to pierce the blade threw "something" all the way to your palm? Or will there be kind of a handle to grab onto? Kinda like how the Assassin Extension Knife is. Sorry if it was already stated, I just got off work and am dead tired -.-, good work on these plans guys, I really hope to see some prototypes soon ;D.
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PostSubject: Re: The Assassin Extension Knife   November 30th 2009, 11:06 am

i believe so. you just have to streamline the shell to not snag on anything.
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PostSubject: Re: The Assassin Extension Knife   November 30th 2009, 4:31 pm

mgrung wrote:

Oh and by the way technically speaking air IS a fluid

You watch the Mythbusters, dont you Wink
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PostSubject: Re: The Assassin Extension Knife   November 30th 2009, 5:37 pm

I see now. I seen a lot of designs that use the scissor jacks/ lazy tongs, where do you guys get yours at? I know its called like 3 different things on here lol. Do you guys just make them or buy them at a site?
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PostSubject: Re: The Assassin Extension Knife   November 30th 2009, 6:12 pm

I would assume its not that hard to find something to use as tongs, and there are probably a number of online suppliers of stuff like that.

ive got an MSPaint mockup of how it all fits together in the front.



fig 1 is the fully dressed unit with a sliding cover over section 3.

fig 2 is the whole thing with the top plates removed. sort of an x ray view. the design of the DAOTF is taken from the pirahna type blade.

EDIT: Wait... anyone ever seen a Microtech Makora II? its the equivalent size and length of the first 2 sections of the Hidden Blade...
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PostSubject: Re: The Assassin Extension Knife   December 4th 2009, 4:54 pm

Hi! I am new to the forum, even though I have been reading around on it for a wile. But, this is first post, yay! Very Happy

I have tried to make an "Assassins Creed like" blade,
like this in the thread.
Mine use rails from drawers for stability improving and to ease the construction, the price is the increased size.
I have yet to add springs and release trigger. It is going to be automatic-out, manual-inn. At full extension it reaches 4cm past my middle finger.
The "too be blade" is 8 cm to long, it does not extend that far, the furthest away black spot marks where the blade intend to end. (it is hard to see)
What i am happy about is how sturdy it turned out, it nearly does not wiggle around at all! What i am unhappy about is how hard it is to pull inn/out; it is going to need unnecessary powerful springs. (I got them though, just havent got the time to mount them yet.)
I figured to post it here, though it is probably a bit late seeing how much of it is already done. (for advice on building it, that is)

Edit: After getting all the bumps and greasing it up. It slides well enough that it may be pulled out by gravity :)



Closed length: 24cm
Fully extended: 49cm

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PostSubject: Re: The Assassin Extension Knife   December 4th 2009, 9:47 pm

Can someone send me a blueprint of this? I want to MAKE one.
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PostSubject: Re: The Assassin Extension Knife   December 5th 2009, 12:05 am

looking thin and sexy :) i really wish i had the tools, material and most of all MONEY to actually build something Sad i hate being all talk
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PostSubject: Re: The Assassin Extension Knife   December 5th 2009, 6:54 am

Welcome Aboard Bruv cheers Very Happy cheers

@Top Respect on your creation, it looks Pukka mate, only wish you'll do a vid when its finished showing a close up of how the pulley and bearing operate! Cool Cool Cool Cool Cool

Not many people earn their WeaponMaster Rank on their FIRST POST but you clearly have! Shocked cheers Cool cheers

I gotta start building again, its driving me mad that i come back home and my flat is no longer my own (missus an Baby Son took over while i was away!) i just about know where all me "bits" are now, only problem is i cant build while Alfie is awake coz he likes to get involved and try grabbing everything an hen he's aseep i dont wana be making too much noise an wake him up! Rolling Eyes Laughing Rolling Eyes

Think i might have to move my equipment to the ol' mans as he is like me but without the "restrictions", he makes cool Sword Canes using mostly fencing foil blades, there pukka, he's good at making them Twisted Evil

I wana try an collaberate on a flick stick or an Auto Switch Stick using the "Flylock" method with him but we'll just have to wait and see i spose, gotta get my lazy arse back to the Gym 1st an foremost though, smokings made me lazy again! Rolling Eyes Bill Sykes Laughing Rolling Eyes

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PostSubject: Re: The Assassin Extension Knife   December 5th 2009, 10:48 am

I really like the pulley system on this one. Very clean.
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PostSubject: Re: The Assassin Extension Knife   December 6th 2009, 8:22 pm

Hi all! Just registered. Loving this post. Thanks!
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PostSubject: Re: The Assassin Extension Knife   December 7th 2009, 11:18 am

sinza did you modify the blade to come out like the vid you posted?
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PostSubject: Re: The Assassin Extension Knife   December 11th 2009, 1:28 am

Ahem... Hi I'm kinda new here and this will be my first post (in case there is a thread for newbies. Any way if i may make an interjection here, Sinza in your videos I noticed you had to manually pull the blade back into the housing. But what if we used a system of pulleys with a ring for a finger to do that for us in one swift motion? Or we could put springs in the front of the housing and use a system of pulleys to engage the springs by taking the nob out of the frontal lock when the blade is extended (i also noticed you had to pull it back in a sideways L movement).
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PostSubject: Re: The Assassin Extension Knife   December 11th 2009, 1:07 pm

Ive made my blueprint last year, in which I really dont have any idea about Assassins Creed hidden blade mechanics in the internet, I made this myself, and ofcourse, a slight idea from Altair.




you can debunk this piece of junk. Just dont say its crap, as I only made it lesser than 15 minutes, (the thinking, and including the painting which sucks) I dont know the name/terms in English, the parts and materials. But I certainly do in French and Filipino.



EDIT: right click > View image... as it has been cut down to half.


Last edited by Sylvos Sérigo de Marseill on December 11th 2009, 1:09 pm; edited 2 times in total (Reason for editing : ...errors)
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PostSubject: Re: The Assassin Extension Knife   December 11th 2009, 2:10 pm

i dont understand how it retracts...
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PostSubject: Re: The Assassin Extension Knife   December 11th 2009, 8:51 pm

Oh damn, this is so easy and I've been ripping my hair out trying to get a good design.
TO THE ERECTOR SET
AWAAAAAAAAY
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PostSubject: Re: The Assassin Extension Knife   December 12th 2009, 6:16 am

S3kShUn8 wrote:
i dont understand how it retracts...

I dont too. I made this last year Laughing Laughing Laughing Laughing
and I really dont know how this could retract. my theory back then, was
when you pull the string, it pushes the spring and the blade away, but then when you stop pulling the string, the spring would then pull the blade back.
then after 5 days, I thought that this was impossible. so
I was just sharing my ideas.

I gave up my spring system now, coz it really takes up a lot of space. I dont know where to buy that in france; this one:
XXXXXXXXX=====>
the XXXXXX thing which becomes kkkkkk when retracted.

I dont know the term too in english. Very Happy Very Happy Very Happy



Edit: I really dont know where to focus on, the AC1 blade which uses the xxxxx something, or the AC2 blade which uses a pulley.


Last edited by Sylvos Sérigo de Marseill on December 12th 2009, 6:19 am; edited 1 time in total (Reason for editing : pulley vs XXXXXX)
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PostSubject: Re: The Assassin Extension Knife   December 12th 2009, 6:45 am

for future reference the xxxxx thing is called scissor jacks Very Happy
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PostSubject: Re: The Assassin Extension Knife   December 12th 2009, 8:37 am


this one
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PostSubject: Re: The Assassin Extension Knife   December 14th 2009, 2:30 am

@qwertyui0
I'm late to the party, as usual, but I thought I'd say that looks very nicely done. Excellent work!
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