Halloween: Dry Ice Fog Machine

One Halloween, my family used dry ice for fog by dumping boiling water on it. I thought "I have an old PC fan... I wonder if I could use it for a fog machine that doesn't use water!" so I built it. I haven't been able to test it yet, so if anyone builds it, please comment how it turns out!
P.S. This is my first Instructable. Please comment!

Step 1 Gather the Materials

Here is what you need:

Materials:
Paper towel tube
PC fan
9V battery
9V battery clip/holder
Super Bright Colored LED OR Super Bright White LED and colored plastic film (I didn't have any bright colored LEDs at the time)
Styrofoam cooler
DUCT TAPE YAY!

Tools:
Knife
Scissors
Sharpie
Hot glue gun
Wire

Comments

[dscorca]

Has anyone tried this without using water? I'm curious if it can pump out a decent amount of fog without adding hot water.

Typically, I put 5 to 10 pound blocks in a basket and lower it into hot water (at about 130F).

[thebigjerryrig]

The main problem I have had with using dry ice is that once the water cools down, (which happens pretty quick), it fails to produce the smoke because it melts more slowly. I am going to attempt to construct one using a small inst hot water heater. Sometimes you can find them used for cheap.

[Jimmacle]

Oh yeah, I completely forgot about the water! I think I was planning to assume the air was warm, or to put a coil near the fan to heat the air.

[catsnw]

next year i am gonna make a few of these and put them on the back of my golf cart and drive around!

[Jimmacle]

Cool! Make sure to tell me how it turns out!

[littlewit]

You could also just use a colored LED. The cellophane does give it a cool custom tint though.

[Jimmacle]

Also, I agree with you about the tint. If you've ever seen the movie Cars, it looks a lot like the Ghost Light!

[Jimmacle]

Yes, I would've used a colored LED, but I couldn't find any of my blue ones :P

[TSC]

Hmmm Nice!!

[Jimmacle]

Thanks!