I’ve used the usual free-standing table top fume extractors, but they’re noisy and always seem to be in the way.
So, when I was reconfiguring my bench, I built the extractor into it.
It consists of a cheap $10, bathroom vent fan with a couple of PVC connections from the intake that run through the front of the bench. From the exhaust side, a long pvc pipe runs along the back of the bench, and blows it against the floor 6 feet away. Sorry, no pictures of the steup on the back of the bench… although it is on wheels, the fully loaded bench weighs a few hundred pounds, so I don’t move it often.
The intake is Loc-Line anti-static vacuum tubing, from loc-line.com This is a series of 2.5 inch diameter, hard plastic segments that interlock to make a flexible tube, and capped with a rectangular nozzle. Part numbers: 81302AS, 81304AS.
Nothing fancy, there’s no trim ring around the intake. The switch on the left of the intake controls the fan.
The flex-tubing is connected to a PVC elbow, that elbow is just press-fit into the intake. This has worked well, it is easy to remove and to adjust.