Soldering Fume Extractor Arm





Introduction: Soldering Fume Extractor Arm

Hi everyone, this is my first Instructable so please let me know if anything should be changed :)

So i decided it was time to update my ghetto helping hand work station and decided to go with the coolant hose style but that left me with a problem of having no fume extractor handy, a quick search showed nothing like this for a fan so here is my take on it.

Thing you will need:

Flexible coolant hose (2 if you want the arm to be longer, i bought 12 :D)

Fan (I used a 12v cpu fan)


Power supply

2x screws

DC connector (Optional)

Tools required:


drill bit (i used 11/64 but any size around there should work as long as its larger than the wires and smaller than the screw head)

screw driver or bit

Vise (Recommended)

Step 1: Remove the Ends

Simple as that you want to remove the ends on the hose

Step 2: Drilling

I used a vise to hold the parts while i drilled them to make things easier. You will want to go at an angle for the hose and avoid going to low or high, drill two holes at opposite sides. For the nozzle you will want to drill straight in then raise the drill to elongate the hole as seen.

Step 3: Running the Wire

I didn't take any photos for this process but if your not using a fan connector like i did it would be a lot easier to run from the top to the nozzle rather than the other way around like i did. You will also want to solder on a DC connector at this point if you plan on using one.

Ive checked and even with maximum bend there is plenty of space left inside the hose.

Step 4: Attach the Fan

I simply used a screw in one of the mounting holes to attach the fan, just make sure the screw isnt so long that it will hit the wire at the end of the nozzle. As you can see i needed to drill out out the hole in front to access the screw behind.

Step 5: Mounting

I conveniently have a shelve above my workstation that i was able to attach this to but any surface you can screw into should work. You could even use the threaded valve to attach it if you wanted.

Step 6: Finally Powering It

I use my variable power supply on my soldering station but any 9-12v power adapter should work as long as it can provide enough power for start up and also make sure the voltage doesn't float too high over 12v while running or it could ruin the fan.

Enjoy not inhaling toxic fumes :)



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is the cpu fan powerful enough to suck fume at a distance?

I would say it is effective at up to 6" in my case

Since I'm not familiar with CPU wiring, I'm compelled to ask if the yellow (RPM) wire has to be connected to the 12 vdc source, for these cpu fans to work? I ordered a box of 4 of them, but really prefer not to 'fry' any of them through my own ignorance.

The yellow rpm wire is not hocked up to anything as it only send out a signal to report the rpm. If you look closely at the 2nd picture in step 3 you can see the yellow wire doesn't go to anything. Hope that helps

One other question. Are the male connectors generally available at electronics supply houses? Just wondering where you got yours.

I have no idea but i imagine they would. Mine came with my fan controller for my pc. If you can wait they can be bought on ebay for around $2 the 60CM option should be long enough. If you cant wait you might have pin headers and spare wire that will work as well.


May I presume that the search on ebay should be for CPU Fan connectors?

That is exactly what I needed to know. Many thanks! The little Chinese guy in tech, apparently didn't get a full grip on what I was asking, so the reply was sorta criptic. Lord knows, he tried.