A fume extractor for soldering. I used a 90 mm computer fan and a kitchen fan carbon filter (48 mm) inside. It's battery powered with a 10 V Li-ion battery. The cables from the fan can be routed into the lower compartment through a hole in the right main part. I also wired in a switch. The left and right main part have a lip and groove so it fits nicely together.
I only needed supports for the tabs on the back cover and for the flanges that are used for mounting the left and right part together.
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