[SML] Ultrasonic low fog machines....

[mouse at fieldmousepro.com]

It's hard to beat good old fashioned dry ice & hot water if your 
application is sensitive to fire alarm triggering. The sharp threshold 
of thick fog to clear air above hasn't yet been matched by glycol or 
other hazer fluids.

Every method had its tradeoffs, of course.

One of the neatest low-fog machines I ever saw was at LDI in the early 
90's. It used a large tank (probably 200 gallons) of hot water, and 
sprayed liquid nitrogen into the tank to create dry-ice type fog. The 
volume & density of fog was incredible, and it could be controlled via 
DMX.

The cost was quite high, but the guys in the booth said that several 
Vegas shows & theme parks used them for their SFX needs.

Stephen


Jon Ares wrote:
> Greetings SML.....
> 
> Anyone here use an ultrasonic low fog machine? Rather than dry ice, it
> uses ultrasonic mist emitter-things to create the fog (like those
> Halloween tabletop cauldrons, etc).