HowTo: 3D printing – Build a solder fume extraction hose incl. funnel

I also needed a suitable hose system to build my solder fume extraction system.

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

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 produced during soldering can then be extracted via this. So that the funnel can be aligned and is stable, there is also a holder on which the tripod can be clamped.

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


Safety instructions

I know the following hints are always a bit annoying and seem unnecessary. But unfortunately, many people who knew it "better" from carelessness lost their eyes, fingers or other things or hurt themselves. In comparison, a loss of data is almost not worth mentioning, but even these can be really annoying. Therefore, please take five minutes to read the safety instructions. Even the coolest project is worth no injury or other annoyance. https://www.nerdiy.de/en/sicherheitshinweise/

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Requirements

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Required tools:

Required material:


Collect the parts you need

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

You need the following parts for the assembly.

  • 125mm hose in the desired length
  • 80mm hose in the desired length
  • 6-8x cable ties
  • 3D printed funnel
  • 3D printed coupling adapter

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

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


Attach the hose adapter

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

To do this, plug the 3D printed hose adapter 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.

When the cable ties are tight you can cut off the protruding ends with a wire 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 the 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 wire cutter.

Another view of the assembled intake funnel.

Another view of the assembled intake funnel.


Mount the tripod adapter

The tripod adapter can be mounted on the intake funnel. In this way, the mini-tripod linked in the material list can be coupled with the intake funnel and easily set up / positioned.

For the further construction you need the following parts:

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

Another view of the required parts.

In order to be able to mount the tripod holder, you first have to drill the mounting holes in the suction funnel.

To do this, place the tripod holder in the desired position and drill through the tripod holder into the suction funnel with a 3mm drill.

Another view.

Another view.

After you’ve drilled the holes, the suction funnel should look something like this.

So that the tripod holder can then be screwed to the suction funnel …

… you now have to insert the 3mm thread inserts into the tripod mount.

Then your tripod mount should look something like this.

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

View of the tripod holder with the mounted suction funnel.

Now you can simply attach the suction funnel to the tripod and position it as you wish.

Another view of the fully assembled suction funnel.

Another view of the fully assembled suction funnel.

Another view of the fully assembled suction funnel.


Combination with a 3D printed butterfly valve

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

You can find information about the structure of the 3D printed butterfly valve in the following article.

View of the 3D printed butterfly valve.

Simple function test.
Structure including Y-distributor.
Example video on automation using a WiFi socket.

I hope everything worked as described. If not or you have any other questions or suggestions, please let me know in the comments. Also, ideas for new projects are always welcome. 🙂

Fab

P.S. 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 appreciate it that I share these information with you, I would be happy about a small donation to the coffee box. 🙂

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