[Cyborg] wearable fog machines
rachel at xtreme.com
Fri Jun 4 08:04:17 UTC 2010
I have actually seen a costume (last weekend even) that used some kind
of smoke machine (it was a Steam Punk costume, a woman with a mohawk had
made a headdress that produced a steam-like fog). She said it was
nontoxic and it was attached to her belt so it was definitely portable.
I will try to track her down and ask about it b/c it would be the
perfect thing for this.
Eric Boyd wrote:
> So, we're probably going to need fog machines of some sort in order to
> make the beams from the laser properly visible.
> There are basically three types of fog generators:
> 1) Chemical, using heat to vaporize "fog juice". This is what clubs use.
> They typically require a ~kW of power for the heater, and 5 minutes to
> warm up. Obviously that'll never be wearable. But, maybe some small
> wearable version could be built somehow? I'm thinking of some kind of
> tiny heater, and a way to "drip" the fog juice. Not sure how much fog
> you could get that way though, even if you pulled it off. Almost
> certainly not the solution we need. Interestingly, you can get these
> fog machines surprisingly cheap, I found several at the $50 price point.
> Fog juice is about $20/gallon. Does noisebridge need a fog machine?!?
> 2) Ultrasonic. Basically, mechanically force vapor out of water. Makes
> a heavy (sinking) fog. Still has fairly large power requirements,
> typically 24V @>1 amp, i.e. 25W or more - possible for batteries, it'd
> be heavy, but doable. This usually only yields a small amount of fog,
> suitable for e.g. a small fountain. Maybe that's sufficient. Can't be
> used with fog juice, it gums up the ultrasonic emitter (darn!). Overall
> I don't think it could be made to work.
> 3) The winner: dry ice. Simply add water to dry ice and presto, fog.
> Primary concern is safety, dry ice is dangerous. Still, I think this is
> the clear choice. You could have a little hand-pump to meter out the
> water into a chamber in e.g. a backpack, and tubes to guide the fog
> where you want it. Bonus points if you can engineer the dry-ice chamber
> into your laser costume somehow :-). Anyone know where I could buy some
> dry ice in the Mission?
> One final thing: you could just actually use smoke, i.e. burn something.
> It might be harder to control that though. Perhaps the use of
> something like Smoke Candles?
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