A SIMPLE DRY ICE FOG GENERATOR
You can make a very simple, yet effective fog generator for use with an
air cannon, or for use at parties or with laser experiments. The fog
generator is made from an ice chest. I use an inexpensive polystyrene
foam (Styrofoam) ice chest that cost about three dollars. You will need:
Using the serrated knife [NOTE: Not recommended for children!], cut a
hole large enough for the dryer hose to fit through the lid of the
styrofoam chest. Do the same to your air cannon as well (see Giant Air Cannon
for a description of how to build an air cannon).
- A styrofoam ice chest,
- Some 4 inch dryer hose,
- Some duct tape,
- A serrated knife for cutting.
Use duct tape to secure the hose to the lid and to the air cannon. Tape
the duct on the inside of the lid as well as around the outside.
Using the Fog Generator
Fill the fog generator with very hot, but not boiling water. Add some
chunks or pellets of dry ice and replace the cover. Soon fog will begin
filling your air cannon or issuing from the dryer hose.
That's it! When the fog generation diminishes, recharge with hot water
and/or more dry ice.
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Updated 26 April 2009
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