Pyrotechnics and bloody effects

    The last time we talked about how to use the line and the washer to simulate bullet hits the body. Today we’ll talk about how to achieve the same goal, but using pyrotechnics, like large ones.

    Our old institute friend (a pyrotechnic lover) assembled a very cheap system for us, consisting of a piece of wood (for protection), a Corsair-1 firecracker, a syringe needle (for piercing a hole in a firecracker), a nichrome thread (as a detonator), wiring and several batteries . Well, there were some condoms with  home-made blood .

    The bottom line is as follows. The thread is stuck in a firecracker, battery wiring is connected to it. The firecracker is placed in a protective box, to which a condom with blood is also attached - above or below the firecracker. The whole structure sticks to the body, after which, at the right moment, the chain closes - the thread heats up, and the firecracker explodes.

    We tried to mount the box on a naked body, and under clothes, with a firecracker over or under a condom. Different results were obtained.




    On a naked body. Pay attention to the delay between circuit closure and explosion in all rollers. To minimize it, you need a much more powerful current source than several batteries - for example, a car battery.



    Under the t-shirt. The firecracker, which is under the condom, does not tear the shirt, so the result looks pretty natural. Although the blood is too much.



    Over the condom. Here, a firecracker is attached above the condom, so the t-shirt is torn (in a previously incised place). You may notice a flash of fire, but it is easy to clean up in post-production.



    Conclusions:
    • The most realistic option is when the blood does not fly out, but remains under the shirt and spreads
    • Still, the old way is better for rooms , otherwise you can go deaf
    • Need a car battery, otherwise the delay between circuit closure and explosion is very large
    • When a firecracker is attached on top of a condom, it looks more like an Alien jumping out of the chest, or like an exit hole from a bullet
    General impressions are positive, although the old method with fishing line and puck is more suitable for rooms. Next time we will try to make an automatic queue.

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