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Rafters -> RE: pops? (7/8/2007 3:45:53 AM)
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quote:
ORIGINAL: GDCouple
Some may think this is nuts, but I read about it on another site recently, and it seems like it could do damage to someone. Anyway, a Dominant posted that he enjoys using "pops, snap in pops" on his sub. These are the little papers filled with gunpowder that kids throw on the ground to make noise and sparks. Anyway, he tapes them to her back while she is tied down and then flogs her. Eventually hitting the snaps.
This could do damage to someone if enough are placed on them, am I correct?
Ummmmm, never tried but...
Shaped Charge 101 is that you trap a bang in every direction but one, that'll direct the reflected energy in that one direction.
So if you have a bang surrounded by either skin and tape, then it comes down to whether the weakest of the two materials breaks and releases the energy and debris, or they both stretch and hold the heat and impact in one place.
You can rig that contest by scapel slicing, invisible breaks into the tape to weaken it and so trap less of the initial explosive impulse.
(Some tapes are flammable BTW)
But if the floggers still moving forward and pushing on the tape with more force than the explosion, you trap the bang and risk either a cigarette style burn, or worse the popper coating gets pushed into the skin like a unhygienic tattoo crossed with a gas injector.
If you wanted to freak out a pitch black, play party safely, you'd rig it like a stage magician.
Legal disclaimer: You're taking explosive special effects advice from some stranger off the internet??
Between the soft bouncy skin and the explosive popper, you want something rigid like a large coin or metal plate.
The coin will spread the initial impulse over a larger skin area causing bruising rather than tearing as well as prevent burns. Because it protects the skin you can use more poppers for extra effect. If you use too many poppers, the coin will be punched into the skin with too much force.
Because the coin is hard, it'll reflect the blast quickly to keep the wavefront high and put a greater impulse load on the tape. So the bang sounds louder and the tape find it harder to stop
Because explosions reflect and/or follow boundaries, you don't want to tape over the poppers and the skin, in case the explosion stays inside the tape and wraps around the coin. Use dabs of double sided tape to hold the coin to the skin, as well as hold the poppers to the coin.
Any tape that goes round the outside to conceal the magic, should be subtely sliced to ribbons, and as weak as possible so it doesn't stop the pop from heading out rather than in.
Square grid cuts look fake, but a shattered glass effect radiating from the poppers location should look natural.
Finally a flogger would suck as the detonator, since it's large surface area and weight, makes it hard to crush the popper and risks trapping any pop as well as hiding it from the audience.
A straightened wire coathanger used as cane, while evil against skin, would be better against poppers since it's got enough sting to detonate them, it's too thin to trap or hide the pop, and hard enough to survive.
If you don't trust DIY bangs, you want to look for movie squibs and someone smarter than you to rig them.
http://en.wikipedia.org/wiki/Squib_(explosive)
Sourcing
http://www.dvinfo.net/conf/archive/index.php/t-22752.html
And if you screw up, converting to Islam will save your assets, since lawyers can't get near you when you're locked up in Gitmo as a terrorist [:D]
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