Hi Guys. I´m trying to rebuild the Hidden Blade from the video game series „Assassin´s Creed”. I have a approximate imagination of the mechanism I want to build, to let the blade “blast out” like in the video games (bending the hand backwards). Constructing this, I am gearing alongside the official artwork.
Now I am looking for a “spring mechanism” which let the blade pop out. I marked it red in the following picture.
Does anybody have an idea where I can find this kind of spring mechanism? I know it exists, but I don´t know where and what to look for. Any help would be appreciated.