Fume Extractor (easy build)

I know, yet another fume extractor. I didn't need any carbon filter and wanted to have a simple build with only few components:

- 120mm fan (two ball bearings) https://www.aliexpress.com/item/1005002404506907.html
- Battery capacity indicator module (1-8s blue) https://www.aliexpress.com/item/32851338868.html
- 18650 lithium battery (here: spare one from a Dyson)
- 20mm on-off switch https://www.aliexpress.com/item/4000899454626.html
- Brass hot melt insets M3 https://www.aliexpress.com/item/1005003130163366.html
- Step up charging module https://www.aliexpress.com/item/1005002817529224.html
- M3 bolts 30mm

The space for the 18650 battery is nicely large - glue some foam into the holder to give the battery a tight fit. Use some hot glue for the capacity indicator.
Nice and strong extracting - I use it always when soldering. Charging is super easy via micro USB port.