Soldering Fume Extractor

YouTube Tutorial

Introduction

Building your own soldering fume extractor is a practical and cost-effective way to protect your lungs from harmful soldering fumes.

This guide provides a step-by-step walkthrough, covering everything from required materials to the final assembly, helping you build a compact, efficient, and portable extractor for your workspace.

Materials & Components

You’ll need the following materials and tools:

• CPU Fans (x2): Bolted together for stronger air intake suction.
• Wires: For power connections and fan wiring.
• Heat Shrink Tubing: For neatly insulating soldered joints.
• Power Button: Controls the extractor power.
• 3D Printed Parts: Funnel and fan housing designed for optimized airflow.
• Flexible Hose: Carries air from intake to exhaust.
• Single Fan: Mounted on the exhaust end to improve airflow.
• Optional Extras:
  • Activated carbon foam for improved fume filtration.
  • Buzzer or LED indicator for operational status.
  • Velcro or mounting hardware for securing the unit.

Tutorial Steps

Follow these steps to assemble your DIY fume extractor:

1. Assemble Intake Fan
   • Bolt two CPU fans together to create a powerful intake module.
   • Ensure both fans are aligned in the same airflow direction to maximize suction.
2. Wire the Fans
   • Strip the fan wires and solder them cleanly.
   • Use heat shrink tubing to insulate connections safely.
   • Keep wiring short and organized to avoid airflow obstruction inside the housing.
3. Test Power
   • Connect a temporary power source to test the fan assembly.
   • Verify both fans spin smoothly and the airflow is in the intended direction.
4. Design and Print the Funnel
   • Use Fusion 360, FreeCAD, or TinkerCAD to design a custom funnel for focused airflow.
   • Export the design as an STL file and 3D print it.
   • Ensure the funnel fits snugly onto the fan assembly for optimal performance.
5. Add Power Control
   • Install a power button inline with the fan’s positive wire.
   • This allows easy switching on and off without unplugging the unit.
6. Mount the Fans
   • Place the fan assembly into the 3D-printed housing.
   • Secure it with screws or strong adhesive to prevent vibration and noise.
7. Connect the Hose
   • Attach one end of the flexible hose to the housing outlet.
   • Ensure the connection is airtight for maximum suction efficiency.
8. Create the Exhaust
   • Mount a single fan at the other end of the hose to act as the exhaust outlet.
   • This fan boosts overall airflow, ensuring fumes are pulled away efficiently.
9. Final Test
   • Power on the complete setup.
   • Check the airflow direction and ensure the extractor removes fumes effectively from your soldering area.

Additional Tips for Better Performance

• Use activated carbon foam at the intake for improved fume filtration.
• Always check fan polarity before soldering wires permanently.
• Clean the hose occasionally to prevent dust and residue buildup.
• Ensure the housing is well-ventilated to avoid fan overheating.
• For larger or denser projects, consider adding an extra intake or exhaust fan.

Project Goal

The goal is to create a portable, efficient, and low-cost fume extractor for electronics workspaces.

Intended: This project enhances safety, keeps your soldering area clean, and adds a professional look to your workstation.
You can customize the design — larger funnels increase efficiency but may require stronger fans to maintain optimal airflow.
Optionally, integrate a status LED or buzzer to indicate when the extractor is running.

Recommended Workflow & Best Practices

• Always test fans and airflow before mounting into the housing.
• Use non-toxic adhesives and ensure all electrical connections are insulated properly.
• Position the extractor as close as possible to the soldering area for maximum effectiveness.
• Maintain a maintenance schedule: clean fans, check hoses, and inspect wiring.

Safety Notes

• Never operate the extractor with exposed wires.
• Ensure ventilation in the room to avoid recirculation of fumes.
• Keep the unit stable to prevent accidental fan contact.
• Do not exceed the rated voltage/current of fans and power supply.

Intended Outcome

This DIY soldering fume extractor provides:

• Safer soldering environment by removing harmful fumes.
• Professional-grade airflow control in a compact design.
• Customizable and upgradeable setup for different workspaces.