The Hidden Dangers of Laser Cutting Fumes

Laser cutting is becoming increasingly popular across numerous manufacturing sectors, from complex metal fabrication to high-precision medical device manufacturing to detailed logos and letters for brand signage and advertising.

Laser cutting has become an invaluable tool. But without the proper precautions to handle laser cutting fumes, workers’ health is put at risk.

In this blog, the air filtration experts at Extract-All will explain why these fumes are dangerous and the steps you can take today to control them in your facility.

What are Laser Cutting Fumes and Why Are They Hazardous?

Laser cutting fumes are produced as a laser cutter melts or vaporized materials with intense, localized heat. This causes the material to break down chemically in a process called pyrolysis. During pyrolysis, the broken down material is instantly released in a plume of air that’s contaminated with irritants and carcinogens.

The specific contaminants vary depending on the working material. Metals emit metallic oxides like chromium and manganese; plastics emit hydrogen chloride and benzene; organic materials like wood or leather emit formaldehyde, fine wood dust, and VOCs. For composite and coated materials, any number of unpredictable contaminants might occur.

Laser cutting fume particles are less than 1 μm. Due to their ultrafine size, they pose severe health risks because they can penetrate deep into the lungs and potentially enter the bloodstream.

Health Risks of Laser Cutting Fumes

Exposure to laser cutting fumes introduce a number of health risks, both for the short and long term. Short-term effects often stem from a condition called metal fume fever, which is caused by breathing in metal oxide fumes. Symptoms include sore throat, fatigue, fever, and muscle aches. Metal fume fever typically lasts 24-48 hours.

Long-term effects of exposure to laser cutting fumes are very serious. Chronic exposure greatly increases the risk of developing lung cancer, nasal cancer, respiratory diseases like COPD and asthma, organ damage, and neurological damage.

The Laser Cutting Fumes Compliance Landscape

To eliminate the health risks of laser cutting fumes, both OSHA and NIOSH have enacted permissible exposure limits (PELs) to keep workers safe from laser fume contaminants.

OSHA PELs (as an 8-hour time weighted average):

Chromium: 0.5 mg/m³
Formaldehyde: 0.75 ppm
Particulates that aren’t otherwise regulated (“nuisance dust”): 15 mg/m³ (total dust); 5 mg/m³ (respirable fraction)

While OSHA sets the legally enforceable standard, NIOSH sets the levels that plant managers should aim for to achieve an optimal environment. The NIOSH general principle is to reach the lowest achievable concentration and gives the following PEL recommendations:

NIOSH PELs (as an 8-hour time weighted average):

Chromium: 0.2 mg/m³
Formaldehyde: 0.016 ppm
General welding/cutting fumes: 5 mg/m³

How Industrial Fume Extractors Work

Without a fume extractor, laser cutting fumes can spread through ductwork, affecting your entire facility. They can also accumulate in areas with poor ventilation, creating a toxic haze that spreads throughout the workspace.

External venting provides some fume mitigation, but the most thorough way to remove laser cutting fumes – especially in enclosed industrial spades – is a fume extractor. Industrial fume extractors take a three-step approach to eliminating toxic fumes:

Pre-filter captures large dust and particles.
HEPA filter captures 99.97% of submicron particles.
Activated carbon filter adsorbs gases and VOCs.

Laser cutting fume extractors are highly effective, removing up to 99.97% of airborne contaminants at the source. They are a proven method to comply with federal regulations.

Picking the Right Laser Cutting Fume Extractor for Your Facility

Once you start looking for a fume extractor, you’ll realize the wide variety of options available. It can be difficult to determine which system will be most effective in your workplace. We recommend asking these questions to help you decide which system is best for you:

What type of contaminants do you need to remove? For large or particularly harmful particles, we recommend a multi-stage filtration system that can adsorb a high percentage of VOCs like the SP-800 with optional F-400-C5 Chemical adsorption module

What is the volume of contaminants? For large volume fume removal in a production facility, we suggest a robust system like the SC-1000 portable fume extractor

How demanding is your workspace? For harsh industrial environments, we recommend a heavy-duty, explosion-proof system like the SP-4000EX-2C Portable Fume Extractor with Explosion-Proof Motor.

If you’d like to talk directly to a filtration expert, contact our expert support team to learn more about our fume extractors and select the right one for your needs.

After finding your fume extractor, proper maintenance is essential to ensure a long and high-performing lifecycle. Filters wear out over time and need to be replaced regularly for optimal performance. Replacement rates greatly depend on particle volume and frequency of use; generally, we advise replacing pre-filters every 30-60 days, HEPA filters every 2-6 months, and carbon filters every 3-4 months.

To make filter reordering easier, we suggest joining our automated filter replacement program. We’ll send you new filters when you need them without any extra planning or effort on your part.

Ensure Full Laser Cutting Fumes Safety & Compliance with Extract-All

Laser cutting machines are an immensely useful tool, but they come with severe hazards that cannot be ignored. In order to stay in legal compliance and protect workers’ health, industrial plant managers must install a fume extraction system.

As the leaders in filtration technology, Extract-All is a trusted partner for industrial companies seeking laser cutting fume extraction solutions. Contact us today to find a system for your facility.