Introduction: 3D Printable USB Air Purifier / Fumes Extractor

The purpose of this project was to design a 100% printable structure that allows to easily change filters and it works in a desk (compact and powerful USB device).

This air purifier can be used as fumes extractor (for soldering) or simply as air purifier. By changing the kind of filter you will get different results.

In this instructable I use 2 activated carbon filters. But it works well with a HEPA filter and a carbon filter (one for each drawer).

All designed in Fusion 360.

Browser view and project download

Step 1: What You Will Need

3D Printer or a friend with a 3D printer or even a 3D printing service.

12x12 cm USB fan (or a 5V Fan and a USB plug)

13x13 cm Activated Carbon Filter or Hepa Filter (or other) 12x12cm and 1cm height.

4 M4 50mm bolts and nuts

4 M4 30mm bolts and nuts

Soldering iron

Electrical Wire

Step 2: Print the Parts

First of all, this was the only PLA that I had available for this project. Nice sweet and anemic salmon color... Sushi style!

You will need one of each parts except for the drawers, you will need 2 of them.

1 x BODY.stl

1 x FRONT.stl

1 x BACK.stl

2 x DRAWER.stl

My printing method was as shown in pictures, but you can change it and find a better printing solution (and you can share it in comments - thank you in advance :)

I've only used supports in BODY.stl and for the holes in FRONT.stl.

My printing parameters:

2 outside layers with 0,5 nozzle

0,2mm height

5 top and lower layers

7% to 10% infill

60mm/s printing speed

Step 3: Prepare the 12x12cm Fan

As my fan came with the USB installed, I had to cut it and solder after the fan installed. This is because you need to pass the wire through a hole designed for it.

So, cut, wire and solder.

Step 4: Install the Fan

Now that you have your wire bigger (mine have 1m long), pass it through the hole and use 4 M4 30mm bolts to screw the fan to the body.stl (notice the fan air flow!).

You have a gap between the body.stl and back.stl so you can have a nut in (as shown in pictures).

Solder the USB plug to the wire.

Step 5: All Together Now!

Assemble everything.

Insert the nuts on the nuts holes.

Stack the 3 parts and screw it all with the M4 50mm

Step 6: Drawers and Filters

Insert both filters, one in each drawer .

Insert each drawer in the body (as shown in pictures).

Front drawer faced back and back drawer faced to the front (this avoids to get a filter jamming the fan).


Plug it to your laptop or any other USB source and enjoy it.

Any ideas or suggestions are very welcome.


Design Now: In Motion Contest

Runner Up in the
Design Now: In Motion Contest

Build a Tool Contest 2017

Participated in the
Build a Tool Contest 2017