Looks like the link got broken to the hidden blade pics from page 1, so I'll repost those with a more in depth run down:
The Hidden Blade was collaborative effort between myself and my cousin. I made the leather parts and the “armor panels” on top of the gauntlet, but the actually impressive part, the blade and release mechanism itself was done by my cousin.
It breaks down basically into a plastic box that houses the blade and the catch, covered in metal, with metal eyelets, and a cast resin blade. The catch release is attached to a ring that fits over my finger. I pull back on the string, pops the catch, and the blade slides out. The blade as it extends out of the case is two parts, you can see it okay in the second gif where the first part comes out, and the end of the blade comes out of the first part…if that makes sense. I can take some more pictures if you want more clarity.
And, it is Gravity Feed, which does have the unfortunate side effect that the blade will not deploy past 90 Degrees, and it does collapse back in on itself when you lift it up. But, for having it pop out when it’s facing down, it looks cool.
Here are some closer images:
And here is my cousin's website:
Assasins Creed Wrist Blade by Kevin Gebhardt at Coroflot.com
As for the Hood, well, that one has been scrapped because it wasn't working well. Currently trying to make a new one that looks good and it's actually the last thing needed to finish the costume.