Why one extractor doesn't fit both — and how to buy the right one
A common mistake: buying the same fume extractor for a CO₂ laser cutter and a fiber laser welder. They produce completely different contaminants requiring different filtration technology. Here's what you need to know.
What it is: Thermal decomposition products. When a CO₂ laser burns/vaporizes material, it creates:
Particle nature: Wet, sticky, tarry. Clogs mechanical filters. Smells strongly.
What it is: Metal vapor condensation + spatter. When a fiber laser melts/vaporizes metal:
Particle nature: Dry, abrasive, conductive. Shorts out ESP cells. Little odor.
ESP works by electrically charging particles. Dry metal powder from fiber laser welding is conductive — when it hits the collection plates, it doesn't stick. It bounces off. Worse, if enough metal dust accumulates near the high-voltage electrodes, it can arc and short the ESP cell.
HEPA cartridges, in contrast, don't care about electrical properties. They physically trap particles in a fiber matrix through interception, impaction, and diffusion. Metal dust, plastic dust, organic dust — it all gets caught the same way. And with pulse-jet cleaning, the dust cake is periodically knocked off into a collection bin, keeping airflow consistent.
HEPA cartridges are ruined by the wet, sticky oil in CO₂ laser smoke. The oil condenses on the filter fibers, rapidly forming an impermeable layer that no amount of pulse-jet cleaning can remove. A $180 HEPA cartridge that would last 12 months on dry welding dust can be clogged in 1-2 weeks of heavy acrylic cutting.
ESP, on the other hand, captures these sticky particles on metal collection plates that are designed to be removed, soaked in degreaser, and reused hundreds of times. The oil literally washes off.
| Your Laser | Primary Contaminant | Right Technology | Reborix Model |
|---|---|---|---|
| CO₂ cutting (acrylic, wood, plastic) | Sticky oil smoke + VOCs | ESP + carbon | 12 Series |
| CO₂ cutting (MDF, plywood) | Wood dust + resin VOCs | ESP + enhanced carbon | 12-5W |
| CO₂ cutting (stainless steel) | Cr VI fume + oil smoke | ESP + high-grade carbon | 12-5/5S (8-stage) |
| Fiber laser marking (metal, plastic) | Fine metal/plastic vapor | ESP + carbon | 12-1, 12-3 |
| Fiber laser welding (hand-held, 1-3kW) | Dry metal powder | HEPA cartridge | FH-8, FH-8S |
| Fiber laser welding (robotic, multi-station) | Heavy metal dust | Pulse-clean HEPA | FH-8-3, FH-8-4 |
| Fiber laser cutting (thin sheet metal) | Metal dust + some fume | HEPA + carbon | FH-8S + carbon |
If you run both CO₂ and fiber lasers in the same facility, you have two options:
Most shops choose option 1 — the payback from lower consumable costs justifies the second unit within 12-18 months.
Tell us what you've got — we'll recommend the right combination.
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