I got the perfect thing for ya sidey!
Pyrodex. . . also known as black powder in some circles. you can pick up a 1 pound bottle at your local Meijers for about 12 bucks after tax (estimate, I don't know what kind of sales tax y'all have in minnesota)
the most common use for Pyrodex is in muzzle loading rifles, it's not an illegal or controlled substance, anyone who looks remotely sane, and capable can purchase it with few to no questions asked. if questions are
asked, then you simply need tell them that it's for special effects in a film. with the elevated level of homeland security that's in effect right now (go level orange!), you might have to be a little bit more tactful in how you approach this (i.e. send sidewinder for the pyrodex, not mecha
)what you'll need:
- containers, such as 20 oz pop bottles, or 12 oz cans, you can even use ping pong balls for smaller ones. since you're looking to direct debris from the explosion, you'll also want some huge coffee ground cans
- pyrodex, or black powder
- paper towel, or other sufficient flammable wadding
- lots of electrical tape
- model rocket igniters, or you can use bits of steel wool, I've found that the igniters are a bit more reliable, however. . .
- roughly 30 to 50 feet of electrical cord and a power source. now, you have a couple options here: power outlet, if one is handy, which means you need to strip the rubber coating off of one end of your wires, and make sure you have an electrical plug on the other end. your other option is to use a car battery, generally speaking this is for outdoor scenes where outlets are not availableset up:
for a simple explosion, with say, a pop can, you fill it half full with pyrodex, then connect an igniter to the bare + and - ends of the wire, put it down in there, then pack paper towel in to ensure that the igniter has contact with the pyrodex (the paper towel also adds flaming debris in the blast
). use the electrical tape to totally wrap the can, this is important, because if it's not sealed just short of air-tight, you won't have a big blast, you'll have a fizzle. plug the other end of the wire into the socket to set off the bomb, or connect the ends to the + and - terminals on your car battery. boom, that's all she freakin' wrote.
you're going to want at least 20 feet clearance for a bomb of this size
for a directional blast to spew debris, you follow above method (with perhaps a little more pyrodex), and set that inside the big coffee grounds can put your debris over top. set her off, and you have smoke, flames, and pieces of debris flying straight into the air!
now, a very important note, this will not make a very flame intensive explosion, like you'd expect from something like gasoline. . . what you'll get with this, is lots of smoke, a bright flash, and a loud bang, but this is actually quite a concussive little bomb. . . be careful with these, as you can get into some serious trouble with the law if you're not careful. . . trust me, I know from experience!
another thing to remember is that you're going to need to play around with this, till you get an exact method that works best for you.