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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22 Discussions


4 years ago

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

1 reply

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.

10 replies

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.


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.

haha i know that pain and it can be troublesome, i will share this with you. I bought a cheap fan a while ago of eBay and when i got it i wasn't getting an rpm signal so i contacted them but their response was useless since they didnt understand what i was talking about. See in the attached picture the rpm and ground are soldered together.


From what their guy told me, in a computer application, it shoud plug in a male version with the same color coding. Other than that, I'm clueless.

Im not sure what you asking here but your ground will be black and V+ will be red and RPM will be any other color usually yellow but also can be white or even green. If you have a 4th blue wire then that is PWM fan which i know nearly nothing about and cant help with nearly as easily. Im also attaching a picture that might help.


I forgot to ask in the previous post. Where could I find 'coolant hose' like the stuff you have pictured? If it's for electronics stuff, I've got access to one helluva good 'E' parts store.

2 replies

Very helpful indeed. I just ordered a 12 pak of them from a Chinese outfit. No hurry for me, as this is a secondary use, born of your post. Only $12.89 too. Not bad after seeing them going for $5.00 each on other listings.


4 years ago on Introduction

Just finished this in time to start my next PCB. I attached it to a clamp with thermoplastic to make it portable. I also added a switch, but the rest of the idea is yours, works great! Thanx for the 'ibble!

1 reply

Reply 5 years ago on Introduction

Glad you like it and as long as it helps and inspires people its fine lol


5 years ago on Introduction

Fantastic idea! The coolant hose is a great alternative to those "gorilla pod" arm pieces. And so much more affordable. I like the suspended fan approch with the power cable fed through the hose. This will soon be an addition to my maker space. Thanx!

1 reply

Reply 5 years ago on Introduction

Glad you like it, it cost me a little over $3 i think and its been working out great much better than my old setup :)