On Tue, 19 Jul 2005 11:28:25 -0400, "HotRod"
wrote:

COOL Idea, How toxic is the smoke?



I wouldn't want to stay in a room full of the smoke but if your only
using a little propylene glycol smoke to see air currents It should be
too bad exposure wise. They use the same thing in wind tunnels because
the smoke is extremely visible.

Fog juice in an old iron would probably work well too.

If you have a soldering gun with a desoldering bulb on it, you could
fill the bulb with fog juice and drip a little on the tip and watch
the smoke path.

P.S. if you ever want to add smoke screen to your car inject
antifreeze into your exhaust manifold. It works great.