Cuboid: A DIY air purifier that’s better than a box-fan @dynomight7

At DYNOMIGHT is the design for a do it yourself air purifier called The Cuboid:

I love box-fan based air purifiers. They are cheap, trivial to build, and people around the world have done experiments to show they actually work.

Still, box-fan purifiers have two downsides: They create a lot of noise, and they consume a fair amount of electricity.

I wanted a new design that preserves the best aspects of using a box-fan:

  1. Cheap.
  2. Easily built with no tools.
  3. No proprietary parts.
  4. Good at purifying the air.

The design should also fix the worst parts of using a box fan:

  1. Make less noise.
  2. Use less electricity.

I think I’ve found such a design. Behold, the Cuboid

All the instructions and test data are included in the article.

The only significant cost is the fan ($30) and the filters ($70 for 4). This is more expensive than a box fan design, where the fan costs $19 and you only need 2 or 3 filters.

See the complete article here.


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