A simple solder fume extractor fan.

Parts

80 mm fan Activated carbon filter mat m4 screws (optional)

Printing

No supports needed, I printed the case face/front down.

Assembly

Put the fan into the case with the airflow of the fan going toward the back of the case.

Cut the activated carbon filter mat into an 80x80 mm square and insert it after the fan. You could use an extra grate between the fan and the mat if you feel the need, I didn't.

Insert the grate after the filter, put the fan cables through the spacing in the grate.

If you want you can use m4 screws to secure the case, fan and grate, I didn't.