Air Compressor Question? I was wondering. When making an indy film, a compressed nouns "squib" can...
I was wondering.
When making an indy film, a compressed nouns "squib" can be a lot safer for a gun shot than a explosive squib.
I was wondering. On a simple 2 gallon nouns compressor, like this one : http://www.aircompressorsdirect.com/cata... can I store the air contained by the tank, and release it all at once? That'd be watertight for what I need. The air coming out would pop the blood pack, resulting surrounded by a believable gun shot.
Thanks for any help.
Regards
Joe
Answers: Yes, and No..
The compressor youve shown will certainly supply the heavens you need... in reality, it will supply quite a bit MORE than you need.
Ive done for a while reading, and from what I can see, a common pump up garden sprayer is capable of supplying adjectives the compressed air you need for a typical 'bullet hit'. And its like mad cheaper than an air compressor.
Safety concern..a powered air compressor is plentifully easier on the folks setting this up, as far as getting the air into the squib, hehehe. as the compressor does all the work, BUT... you entail to moderate the actual pressure coming out. Compressed air is more dangerous than most folks realize. I've see injuries from air nozzles set at too high a pressure, and it cause bruising, at the least, and at its most dangerous, can certainly blow air thru the skin, into the blood stream. So be certain to START your experiments beside a LOW AIR PRESSURE. I'd strongly recommend, that you consider putting some kind of padding aft the squib, to protect your actor's skin. You probably only need 10 to 15 psi to engineer this work. that air compressor you've chosen will deliver ten times that, easily.
Another concern, is how to operate the compressor... do not use an extension cord -- its better to run more nouns hose, than to run an extension cord. Extension cords will actually cause you to lose amperage over a long distance..as a contractor, I routinely use especially heavy, long extension cords for my power tools, all but the upper air compressor. Most air compressors need 13 to 15 amps to see off, and start. a typical 100 foot cord limits you to merely 10 amps, and thats just enough to weaken the compressor motor, as it 'tries' to start, but can't. On the plus side. adding air hose, is similar to expanding your air tank, giving you more stored nouns to work with. It may also be helpful to maintain the noise of the compressor away from where you are working -- even the 'quiet' models, similar to shown, can be noisy, hehehe.
Also, I doubt very seriously you will want to empty the tank on the compressor for your squibs. adjectives you need is enough to brand them pop. The typical 2 gallon compressor will have quite a bit more nouns than that. Ive got a 2.5 gallon 2.2 hp CH brand compressor myself, and when I release the safety spout, it will take several seconds to futile the tank.
By the way, for "multiple sequential hits", you'd want to set up a series of nouns switches, which can be triggered one after the other. This is one situation where the air compressor would be exceedingly handy, as it could supply all the air needed for a 'multiple hit'. Just remember to maintain the psi low enough so your actor isnt injured.
Here are some links you may find compliant in 'building' your air squibs -
http://www.exposure.co.uk/eejit/blood/in...
http://www.simreal.com/content/SquibEvol...
http://www.dvfreelancer.com/articles/spe...
http://fxhome.com/forums/viewtopic.php?t...
And, here are a couple of sites that show how to use compressed nouns in animated displays, like for halloween. They're upright reading because they show how to set up a control system.
http://wolfstone.halloweenhost.com/Pneum...
http://www.phantasmechanics.com/air/inde...
Have Fun
If your just going to explode a "squib," you don't need to release adjectives the air at once. A squib only wishes a small amount of air to make it explode. Releasing adjectives the air in the cistern will make it scatter too much. Experiment for a time, before you "roll the film". Condoms make honourable ones.