HowTo: 3D printing - build your own solder fume extraction hose incl. funnel

For the construction of my solder fume extraction system I also needed a suitable hose system.

After some trial and error, I decided to use the standard exhaust hoses. These are actually used to convey the exhaust air from extractor hoods or dryers out.

For the solder fume extraction system, I decided to use a 125mm and an 80mm exhaust hose. These are connected with a 3D printed coupler.

A 3D printed funnel is then connected to the 80mm exhaust hose. The vapors generated during soldering can then be extracted via this funnel. So that the funnel can be aligned and is stable, there is also a holder on which the stand can be clamped.

The structure of the suction hose is described in the following article.

Safety instructions

I know the following notes are always kind of annoying and seem unnecessary. Unfortunately, many people who knew "better" have lost eyes, fingers or other things due to carelessness or injured themselves. Data loss is almost negligible in comparison, but even these can be really annoying. Therefore, please take five minutes to read the safety instructions. Because even the coolest project is not worth injury or other trouble.

Affiliate links/advertising links

The links to online shops listed here are so-called affiliate links. If you click on such an affiliate link and make a purchase via this link, will receive a commission from the relevant online shop or provider. The price does not change for you. If you make your purchases via these links, you support in being able to offer other useful projects in the future. 🙂 


For the assembly you have to master soldering tasks. The following articles contain tips on this.

Required tool:

Required material:

In the following list you will find all the parts you need for the assembly.

Collect the necessary parts

Before you can start building, you should first collect all the necessary parts.

For the assembly you need the following parts.

  • 125mm hose in desired length
  • 80mm hose in desired length
  • 6-8x cable ties
  • 3D printed funnel
  • 3D Printed Coupling Adapter

You can find the STL files for printing at the following link. If you get an error when importing into your slicer, you should download the complete repository. When downloading the single STL file, GitHub often only provides the HTML file to preview the STL file and not the STL file itself.

Info about printing: I printed all components with 30% infill and 5 perimeters of PLA.

Attach hose adapter

The hose adapter allows a 125mm exhaust hose to be connected to an 80mm exhaust hose.

To do this, insert the 3D printed hose adapter from above into the...

...125mm exhaust hose.

You can then secure the hose to the adapter using the cable ties.

Another view of the hose adapter, secured with cable ties.

Another view of the hose adapter, secured with cable ties.

If the cable ties are tight, you can cut off the overhanging ends with a side cutter.

Another view of the hose adapter, secured with cable ties.

You can now mount the 80mm exhaust hose on the hose adapter in the same way.

Mount intake funnel

In this step, the 3D printed intake funnel is connected to the 80mm exhaust hose.

The suction funnel is mounted in the same way as the hose adapter.

Insert the suction funnel into the 80mm suction hose as shown and fix it with cable ties.

You can then cut off the protruding ends of the cable ties with a side cutter.

Another view of the assembled intake funnel.

Another view of the assembled intake funnel.

Mount tripod adapter

The tripod adapter can be mounted on the suction funnel. This allows the mini tripod linked in the material list to be coupled with the suction funnel and easily set up/positioned.

For the further construction you need the following parts:

  • the previously built exhaust air hose
  • the tripod adapter
  • 2x M3 thread inserts
  • 2x M3x10 cylinder head screws

Another view of the parts needed.

In order to mount the stand holder, you must first drill the mounting holes in the extraction funnel.

To do this, place the stand holder at the desired location and drill through the stand holder into the suction funnel using a 3mm drill bit.

Other view.

Other view.

After you have drilled the holes, the extraction funnel should look something like this.

So that the tripod mount can then be screwed to the intake funnel... must now insert the 3mm thread inserts into the tripod mount.

After that, your tripod mount should look something like this.

Then you can screw the tripod holder to the suction funnel.

View of the stand holder with the mounted suction funnel.

Now you can simply attach the suction funnel to the stand and position it as desired.

Another view of the fully assembled suction hopper.

Another view of the fully assembled suction hopper.

Another view of the fully assembled suction hopper.

Combination with 3D printed butterfly valve

The 125mm exhaust hose can now be connected directly to an extraction system. Alternatively, it can first be connected to a 3D printed butterfly valve and only then to a further extraction system. When the 3D printed butterfly valve is integrated into the exhaust hose, the exhaust can be controlled independently of the exhaust system.

Info about the construction of the 3D printed butterfly valve can be found in the following article.

View of the 3D printed butterfly valve.

Simple function test.
Structure incl. Y-distributor.
Example video of automation using a wifi socket.

Have fun with the project

I hope everything worked as described for you. If not or you have questions or suggestions please let me know in the comments. I will then add this to the article if necessary.
Ideas for new projects are always welcome. 🙂

PS Many of these projects - especially the hardware projects - cost a lot of time and money. Of course I do this because I enjoy it, but if you think it's cool that I share the information with you, I would be happy about a small donation to the coffee fund. 🙂

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