Solder fume extractor
thingiverse
Minimalist way to mount a carbon filter to a 120mm fan to create a simple but effective solder fume extractor. Assembly: First put the M3 nuts in the nut traps, then mount the fan using M4 Socket head cap screws, then put the a piece of active carbon filter cut to approx. 100x90mm in and mount the cover using M3x16 screws. Carbon filter could be (like) https://www.conrad.nl/p/toolcraft-79-7201-actief-koolfilter-3-delig-588546 You might also want to mount a fan guard (https://www.thingiverse.com/thing:1581974) to the other side of the fan.
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