video SA OTF Xiphoid MK IV - Arm Mounted Blade
 Single Action Out the Front Xiphoid Mark Four

This is the fourth xiphoid I have made. It's pretty simple, and works very well.
This is NOT meant to be from Assassin's Creed! Though I love the game, this is UNRELATED.
Made from a drawer slide, 5 bolts, 9 nuts, strips of homemade faux leather, 4 keyrings, wire, springs, and a ring.

Thanks to Nightshade for the latch design.
Thanks to NightHawk22 for the awesome song.
Thanks to SINZA for his epic forum, you rock! 
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if you make another how much?

Udit Mathur4 years ago
can you make a retractable blade??spring loaded or motorized any will work for me
wanna see my concept??? its a design that allows minimal force to eject or retract a very long object, like the blade. Details are on my instructable:


Hope i helped you......
Kaiven (author)  Udit Mathur4 years ago
I can, though I can link you to a tutorial that has already been done well.
send me the link
Kaiven (author)  Udit Mathur4 years ago
curvy773 years ago
assasins creed!!! i to am planning my own design frm that game. >=) i am working on the wrist pistol. i have the general design and have come up with a (hopefully) safe way of firing a revolver round. withou fireing off my hand too but we'll see.
BLR253 years ago
is there any way you could make me one, i would buy it if you made it
jumper173 years ago
Could you post specifics on either where to salvage a latch like the one shown in the video, or how to obtain/construct one? Thanks. (P.S. What is that EPIC music played in the sped up section?)
Kaiven (author)  jumper173 years ago
I just cut it out myself from scrap metal. It's shaped like an L with a hook.
Any idea where you might have gotten your springs? I used 2.4 pound springs from home depot, but they turned out to be made out of crappy material- Stretched out like nobody's business.
mulletman64 years ago
What width draw roller do you use?
Kaiven (author)  mulletman64 years ago
Umm not sure, all the drawer slides are the same width from the hardware store...
Ah fair - It looks like quite a wide one, so i shal have to have a look for a bigger one :)
knights12244 years ago
I like it

some tips / things you could do different:
- have some sort of arm protector, that looked kind of uncomfortable with the bare screw/nuts against your arm
- have it to where you can stab and slash with out the blade retracting, because a real hidden blade can do that, so maybe have a locking pin that can be removed [see below for details]
[see above for unnecessary use of brackets with words in them]
possibly switch the ring to your ring finger and have a locking pin wire and ring on your pinky-finger. so somehow you could bring out the blade and keep it from moving when you stab, and you could also bring it back in when you wanted

I would buy a wholly completed one
alcemy_FTW4 years ago
what could i use for the blade?
Kaiven (author)  alcemy_FTW4 years ago
Anything... depends on what you have.
sithstalker4 years ago
av just made 1 from shin gaurds havin a bit troulbe with the latch
lilparis474 years ago
fitting music
could you post more of the specs of the design for those who want to make it? - even a project for DIY purposes.
Kaiven (author)  larslovespeace5 years ago
Specs like what? Everything is shown and described in the video.
EwwieImp Kaiven4 years ago
It would be helpful though if you could put the exact things such as bolt size, length, etc.
Kaiven (author)  EwwieImp4 years ago
I never designed it on specific measurements. EVERYTHING has to be adjusted according to materials and the wearer. The drawer slide is 10 inches, that is the only fixed measurement.
I guess your right- I will just try to fabricate it based upon video
Sarthex4 years ago
i think this is the first instructable i ever favorited O.O
awesome job man
Kaiven (author)  Sarthex4 years ago
11richie214 years ago
Where can I get or how can I make the release "thing" (metal piece that releases the blade)?
i think the word you're looking for is a "latch" and you could always bend some 8 gauge heavy duty wire to fit
Kaiven (author)  11richie214 years ago
Just cut an "L" shape from a piece of thick sheet metal and make a "barb" on it, like seen on a hook.
hey just wondering... i have been looking for instructions on how to make one of these. could it be possible for you to make a tutorial?
Kaiven (author)  pkthunder4 years ago
I wouldn't be able to do much besides another disassembly.
Thank you that help! I made the piece and actually made one of these with a blade but i was going to ask how much tension your springs have? I used only one because it was around 11.5 lbs but around the same size as your larger spring. the spring I have makes it hard for me to put the blade back in :( Thanks
you could just make it out of a piece of thin wood, it would work just as well and would be easy to replace
(YOUR N4 years ago
Hey hey it's me again I'm shocked y arnt u wearing
That cool :) t shirt great Ible do
Would it be too much trouble to make a tutorial for this thing? It's too awesome to not want to make!
How much should I expect to pay if I want to build one of these?
Kaiven (author)  greatnameless14 years ago
I paid about $3, because I had most of the stuff. I'm not sure how much it would cost to buy all of the parts.
knex 7115 years ago
when it has a blade how will it retract automatically other things ive seen
Kaiven (author)  knex 7115 years ago
Sorry, I do not understand your comment. Please use punctuation and complete thoughts.
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