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New Project: Soldering Fume Extractor

Build your own fume extractor for about $20.

New Project: Soldering Fume Extractor

I do a lot of electronics projects and have recently taken an interest in stained glass. I love to solder, but the fumes from flux and rosin aren’t very good for you. I decided to build my own fume extractor to solve this problem.


  • http://cnn?84739 news feed

    Hmm is anyone else having problems with the pictures on this blog loading? I’m trying to figure out if its a problem on my end or if it’s the blog. Any responses would be greatly appreciated

  • ariroark

    A “pet fan” designed to fit on a car window and intended to ventilate the car while lowering the temperature from a 98 F to around 70 ( if not lower in the shade!) costs around 4-6 bucks and less at closeout stores..these work extremely well, particularly when you add a carbon filter and/ or cut a small hole ( the diameter of the hose on a small shopvac or whatever vacuum you have on hand already)the “pet fan” sucks the fumes away from your work area and respiratory system and can be directed to the vac you store under the soldering bench- free unless you buy a fliter and removes the fumes far faster than this idea. for one you need a lot of suction to get fumes through the filters..then once filtered what collects the fumes?..I have used a “pet fan” for years to divert fumes from my soldering area ( i am a goldsmith) and have never had the first problem with fume inhalation or a burned throat from using the wrong flux ( acid core rosin fluxes in particular!)
    .20 bucks is VERY steep in my opinion from the service this gives you:For one thing get in the habit of not hanging over your work- use magnification to see closer than you actually are to your work.Second, if you are in a well ventilated room to begin with simply turning on the switch on a shop vac type set-up works well for soldering fumes since its a hit-and-run operation requiring seconds to complete..even if moving from hard to easy solders in a workpiece. There are 12 Volt DC wet and dry vacs available at a number of discount type /secondary market retailers that are small enough to mount under any bench and have at least a 5 foot hose and usually attachments included with the sets so even if you are off the grid a lantern battery or rechargeable batteries will run it ( some run on a few “C “batteries , others run on 6 “AA” batteries, or an AC adapter if you do have power , a car battery/deep cycle marine battery if you want a long term source of power without running wiring from solar or hydro sources that can be recharged at your local gas station for under a buck every couple of months ,etc.: in a word powering this unit isn’t a problem) it has plenty enough suction to carry off fumes and short of finding a free range hood on craig’s list and installing it over your soldering area in the studio/shop does the trick with only a 3 dollar piece of filter material as an extra step that really adds no protection to you, but filters the fumes being contained..
    all in all , this project while well intentioned is too costly for the protection a 3m respirator with cartridges will give you, or a set up as I described for less than 20 bucks can be installed.Main principle: don’t get in the habit of having your head directly over your work and divert the fumes.If you are doing production runs of soldering operations or extended soldering this unit described in the project is less appropriate than a respirator in the first place!.

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