How to Build a DIY Solder Fume Extractor With a PC Fan – Safe, Cheap and Effective!

In this guide, I’ll show you how to build a compact and effective solder fume extractor using a PC fan, a voltage regulator, and a little DIY spirit. It’s a simple, affordable, and beginner-friendly project—easy to build, super useful, and most importantly, it helps protect your health. Soldering fumes are toxic, and having a basic extractor can make a big difference!

➡️Link Amazon

120 mm Fan: https://amzn.to/4cqT7zY

Various Screws M2 - M3: https://amzn.to/4jdatod

Speed Controller: https://amzn.to/3WH7Twx

Female DC Jack 5.5x2.1: https://amzn.to/4jlMXWd

Heat Shrink Tubing: https://amzn.to/4jM5vyN

Activated Carbon Filter Sheets: https://amzn.to/44C3jp1

➡️Link Aliexpress

120 mm Fan: https://s.click.aliexpress.com/e/_oBU0SIf

Various Screws M2 - M3: https://s.click.aliexpress.com/e/_DB3BWiH

12V Speed Controller: https://s.click.aliexpress.com/e/_oB61Tj9

DC Female Socket 5.5x2.1: https://s.click.aliexpress.com/e/_DB0Ls4F

Heat Shrink Tubing: https://s.click.aliexpress.com/e/_opyZheL

Activated Carbon Filter Sheets: https://s.click.aliexpress.com/e/_opM2env

➡️3D printable file: Makerworld

Use 2-part epoxy glue to join the grill to the filter frame. The grill prevents the filter from being sucked into the fan. Apply glue carefully with a toothpick and let it cure.

Solder two wires (positive to center, negative to outer tab) onto the DC 12V female connector. Use heat shrink tubing to insulate the connections.

Insert the power connector into its dedicated hole in the 3D printed fan frame and secure it. Route the fan cable through the exit hole and screw the fan in place using the 4 screws that come with the fan.

Trim the fan cable, separating the 4 wires. Use only the black (GND) and red (12V) wires. Solder them to "Motor+" and "Motor-" on the regulator. Connect the DC jack to "Power+" and "Power-". Tighten screws securely.

Insert the regulator into its housing, attach the cover, and screw everything together. Mount the filter onto the fan. Plug in the power, turn it on, and test it at different distances (7–15 cm) from your soldering point.

You've now built a highly useful fume extractor that protects your lungs and makes your soldering station safer. Customize it, improve it, or connect it to a hose for outdoor exhaust—your lungs will thank you!