Picture of Evaporative Humidifier
Well Its so dry here I built a DIY humidifier the one with the bottle and the air stone you see all over the internet, but it sucked so bad It was intended for a much smaller environment.
So I built a real Humidifier intended for a much larger space.
Here is what you will need to build your own Evaporative self regulating Humidifier on the cheap.

Step 1: What you will need

Picture of What you will need
humidifier 002.jpg
humidifier 004.jpg
First a pet water dish with automatic refill.
A few super thick sponges
A small fan with switch (very quiet one from radio shack)
A tupperware plastic square bowl that is about the same size as the open part of the water dish
4 screws or bolts/nuts
matroska5 years ago
 Hell YES! This instructable is so much what I need! Thx for sharing' !
falconress5 years ago
I know this is 2 years late, but I found this because I Googled DIY humidifiers now (in January 2010), so others might still be interested years later too. My suggestion for preventing mold for the sponges is to periodically rinse them out, squeeze out excess water, and zap them for 45 seconds to 1 minute in the microwave. This will pretty effectively sterilize them, and as long as you have a microwave in your home, it so quick, cheap and easy to do that you can do it often enough (even weekly) to make sure mold or bacteria will never be a problem.

Also, the dollar stores in my town sell not only one sponge for a buck, but packs of 6 or even 8 sponges for a buck. You may need two or three to get the size right, but still, it's a very economical and easy replacement to keep mold from encroaching.

BTW, I do the microwave thing every week with all spongeware around the kitchen sink (dish sponges, brushes, and wipe-up towels), and with my cutting boards. If you start doing this too, just make sure your dish sponges aren't mixed with metals (like the ones for heavy-duty scouring). Those shouldn't go in the microwave, obviously.
lemonie8 years ago
Good build. But the picture with horrid-green writing could be improved (even MS Paint can do straight lines). L (And you spelled evaporative as evaprative twice)
xlioilx (author)  lemonie8 years ago
Oh thank you It was so late when I published it 4 or 5 am thnx
I like it quite a bit. When I saw this instructable I had expected it to be like the one I made for my snake's cage, but mine uses fog blown into the cage to humidify it. The only thing I have to worry about yours is that fact that it uses standing water and water in sponges. The sponges hold in water in such a way that often brings in mold, which could make your room smell bad. That's the only problem I have with it, but since you're using it I imagine somehow the mold's not growing.
xlioilx (author)  Erik Lindemann8 years ago
Yes that is a concern, but the sponges are not hard to replace (at $0.97) and you can always add a drop or two of bleach. Its so dry right now that mold does not grow. I'm having to fill the water back up about once a day.