Soldering Fume Extractor

A fume extractor is a necessary piece safety equipment while working with electronics. Soldering releases toxic fume from the rosin flux that evaporates. This fume extractor is a simple and most of the parts are likely already available in your house. 

Print Instructions

• Orientation: Print upright as shown in photo
• Layer height: 0.20 mm
• Infill: 20%
• Supports: None if good bridging capability or use supports for the font opening

Bill of Materials

• 3D printed duct frame
• 120 mm PC fan
• 4x PC case fan screws (usually come with the fan)
• 1/4 in or 1/8 in activated carbon filter (such as this )
• 12V power supply (such as this)
• Female barrel connector that fits power supply (optional for easy disconnect, 5.5mm O.D., 2.1mm I.D. barrel jack was used in this build)
  • Use this or this to avoid soldering
• Electrical tape and heat shrink tubing as needed

Build Instructions

1. Print duct frame per instructions
2. (Optional) Remove supports, sand, and paint as needed 
3. Cut off fan connector and strip wires
4. Connect the barrel connector to the fan wires
   1. Verify which connection to the barrel jack is positive and negative (the sleeve is negative and the pin is positive) 
   2. Solder the red wire to the positive connecting and black wire to the negative wire. The yellow wire is for fan speed and can be ignored.
   3. Use heat shrink or electrical tape to cover the solder joints as needed
   4. Plug in the power supply to test that the fan is spinning in the correct direction
5. Use the four screws to attach the fan to the back of the duct. The fan should be oriented in the direction that pulls air through the front
6. Trim the activated carbon filter to fit in the slot at the top of the frame and insert
7. Your fume is extractor is ready for use. While soldering, position the fume extractor as close as possible to the solder point to ensure maximum filtering