I needed a small battery-powered fog machine for an upcoming project. Mains-powered foggers are not at all expensive (~$40). But a battery powered portable one is, for reasons I don't really understand, a whopping $800 (or even $1850!). There are various wimpy fog machines like the Wizard Stick (kid's toy) and the Dragon Puffer (same device, repurposed for draft-testing), that don't generate much fog and need to be held upright. But I wanted a battery-powered fog machine that was silent, had variable output from a few wisps to a dense cloud, and could be waved around. This ruled out any commercial fog machine I could find, so I designed and made one myself using an electronic cigarette, a small fan and a 3D printed enclosure. Just the thing for your Halloween costume, product staging, or party.
You will need to acquire the following:
- electronic cigarette kit (I advise buying extra emitters). I used a TW INTU E-cig kit, with a 5000 mAh battery, variable power up to 80 W, and a 4 ml tank.
- battery holder for 3 AAA batteries
- 3 AAA batteries
- 40 mm 5 V computer fan
- a rocker switch
- a 3D printed enclosure (see next step)
Total cost <$100 if you have access to a 3D printer.
You can find other e cigarette fog machine hacks online, but I experimented with them and found them noisier and less foggy than I'd like (e.g. this one that uses an aquarium pump). Hence the new design.