HOWTO make a $5 homebrew fog machine


23 Responses to “HOWTO make a $5 homebrew fog machine”

  1. Art says:

    I’m impressed!

  2. Michael Dawson says:

    I was all excited for a moment when I thought this machine would create a fog of homebrew, I mean how cool would that be, like a fluffy cloud but made of beer!

  3. pizzicato says:

    Not impressed! Although Glycerine is present in loads of cosmetic product, the BBQ foil dish and naked flame candle doesn’t cut it.

    Go eBay buy a mist fogger, cheap. You can power it with laptop adpater DC ~19V to 24V max, oh yes that cost 5 bucks too, free delivery from HK, direct a gentle breeze over the mist, you got your fog. 

  4. What would happen if you added food colorant? Would the dissolved color become vaporized, too?

  5. Brainspore says:

    I saved five dollars by moving to the Sunset District in San Francisco.

  6. Art says:

    The whole concept is a neat DIY project, 
    not an ebay or store “purchase”.

    The safety part is always incumbent on the user.

  7. Brainspore says:

    @Kyle Hertler: Unfortunately no, you can’t make colored fog. I’m pretty sure the water/glycerine mixture would boil off and leave a thin film of dye in the pan, but even if the food colorant had the same evaporation point as the other liquids the resulting gases would be way too diffuse to be visible in the air. For that effect you’d need to put some kind of solid particles in the air using a smoke machine.

    • mccrum says:

      Or just use colored lights!

    • RobDobbs says:

      “Experimentation has been done in the past with adding coloured dyes to smoke fluid to produce coloured smoke, however, the amount of dye required is high and the risk of staining is also too high to make the technique worthwhile. In the pyrotechnic coloured smoke devices dye is also used to add the colour, and these smoke devices also pose a high stain risk. The best advice for producing clean coloured smoke is to colour the smoke with light using beam control to selectively colour smoke in a scene.”

  8. tron 2147 says:

    I’m so down with this. Wondering what sort of experience this liquid concoction would create in an electric tea kettle or a cold mist humidifier…

  9. Ian Wood says:

    I just use bottled fog. Save it up all year, let it out on All Hallow’s. Cheap, effective, free. but use glass bottles; it slowly diffuses through plastic.

  10. brunocs says:

    Anyone knows if it’s ok to breathe this?

    • Brainspore says:

      Glycerine is widely used in food and drugs so you should be OK as long as you’re not huffing it straight in lieu of air.

    • RobDobbs says:

      They use it in those electric cigarettes, apparently:

  11. Chip says:

    It’s fine.  Commercial “fog juice” is either glycerine or propylene glycol mixed with water.  Glycol is also used in asthma inhalers, and they used to pump it through hospital ductwork because it’s actually a mild antibiotic.  It helps kill the bugs that spread through the HVAC system.

  12. putaro says:

    We did it with dry ice once (free if you steal it from the university bio lab :-) ). 

  13. technogeekagain says:

    Hm. I have suitable lab flask. Need to think about heat source and stand, but definitely A Thought.

  14. larrybob says:

    May set off fire alarms.

    • technogeekagain says:

      Anecdotal reports elsewhere say fire alarms don’t seem to complain. But, yeah, that’s a valid warning.

      I’m planning on using it on the porch, so that shouldn’t be an issue.

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