A Quick Cheap DIY Soldering Fume Extractor.

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I often do a lot of soldering in enclosed spaced. I’ve known for a while that the fumes aren’t exactly good for you, so today I decided to do something about it. Here I’ll share instructions on how to make a quick and easy fume extractor from parts you may already have around the house (except the filter).

Materials

Below is a photo of the materials I used.

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  • 12 v powersupply rescued rescued from something I threw out long ago.
  • 5 1/2″ x 4 3/4″ piece of plywood from my scrap box (card board or foam core will work equally well)
  • 120 mm fan taken from an old computer
  • an HRF-H1 sized HEPA air filter (Its important to get a true HEPA filter to get the most smoke removal).
  • 6 rubber bands from grocery store produce.

Instructions

Conveniently,  the HRF-H1 air filters are almost exactly 120mm wide so they can be directly fit to the computer fan.  A lot of similar DIY instructions on the web have you laser cutting a rack or holder, which is nice but I don’t own a laser cutter, do you?

To start, rubber-band the fan to the filter with the flow facing into the filter (usually the air flow comes out the side of the fan with the logo sticker on it).

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You’ll notice that there is still a large gap between the top of the fan and the rest of the filter.  To remedy that cover the rest of the filter’s face with a sheet of plywood or cardboard.

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Finally you can solder you power supply leads to the fan.  In my case the fan had a male and female molex connector attached so I cut off the male connector and soldered to my power supply.   This way the power supply unplugs and the fan can be reused should I decide I need it.

 

 

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