This is a solder fume extractor. This is an improvement over the version I've made a few years ago that can be found at https://www.thingiverse.com/thing:724350 . Only the base (stand) is changed. I lowered it and made the base larger to improve its stability.

This fume extractor uses carbon filters of 130mm x 130mm x 10mm. These are used for the HAKKO 491/493 fume extractor. To build it, you'll need:

• 2 x carbon filters of 130mm x 130mm x 10mm.
• 1 x 120 mm 12V computer fan
• 1 x KCD1-101 switch
• 1 x DC barrel power jack like the PRT-00119 from Sparkfun
• 4 x 6-32 screws of 1.5" in length (38 mm)
• 4 x 6-32 nuts

Some electrical wires
You also need a 12V power adapter with a 5.5 x 2.1 mm plug to power it.

You should not need support material to print it.