Position costs nothing
The plume rises. Weld so that it goes away from your face rather than past it: stand to the side of the work rather than leaning over it, and put a fan behind you blowing gently across the bench and out of a door. That single arrangement removes more exposure than most equipment purchases.
Capture distance is everything
Extraction efficiency falls roughly with the square of distance. A nozzle 100 mm (3.94 in) from the arc captures most of the plume; the same nozzle at 400 mm (15.7 in) captures very little. The discipline is moving the arm each time you move the work — an extractor parked at the back of the bench is decoration.
What to buy first
A bench extractor of around 180 m (591 ft)³/h at roughly €100 is a real improvement for seated work. A mobile unit with an articulated arm is the next step and costs several times more. Powered air-purifying helmets solve the problem differently, by filtering what you breathe rather than removing it from the room.
Stainless and galvanized are worse
Chromium and nickel from stainless, and zinc from galvanized coatings, are considerably more harmful than mild steel fume. Grind galvanizing back from the weld line, and treat stainless work as the case where extraction stops being optional.
Prices quoted in this text were read on 2026-08-14. The live price is at the top of the page.
The questions welders ask
Is opening a door enough?
It is better than nothing and it is not extraction. Dilution ventilation lowers the average concentration in the room; it does nothing about the concentrated plume rising past your face in the first seconds. Do both: capture at the source, and ventilate the space.
Does a welding helmet filter fume?
A standard helmet does not — it protects your eyes and face from radiation and spatter only. Powered air-purifying helmets do filter the air you breathe, and they bring their own consumables: pre-filters and spark arrestors that must be inspected and replaced.
Last reviewed 2026-08-14