Quick answer
CO₂ laser cutters commonly process verified acrylic, paper, cardboard, selected wood, natural textiles, approved synthetic textiles, vegetable-tanned leather and some purpose-made laser rubber or foam. Do not identify a material by appearance alone. PVC and other halogen-containing materials, unknown coatings, fiberglass and many composites can release hazardous fumes or damage equipment. Check the safety data sheet and run a controlled sample test before production.
Material decisions must be machine- and facility-specific
Material lists published by universities do not always agree. One laboratory may approve a material that another bans because their lasers, filters, extraction systems, fire procedures and risk assessments differ. Treat a public list as a screening tool, not permission to run an unknown material.
The minimum approval process is:
- Confirm the exact material and all coatings, adhesives and backings.
- Obtain the current safety data sheet.
- Check for chlorine, fluorine, bromine and other halogens.
- Review the machine manufacturer’s material policy.
- Confirm local exhaust and filtration are suitable for the expected fumes.
- Test a small sample while monitoring flame, smoke, residue and edge quality.
OSHA states that adequate ventilation should reduce hazardous fumes and vapors from laser cutting and other laser-material interactions below applicable exposure limits.
CO₂ laser material screening table
| Material | Initial screening | Main concern | Next step |
|---|---|---|---|
| Cast acrylic (PMMA) | Commonly suitable | Flammable vapor and smoke | Verify PMMA; test thickness and exhaust |
| Paper and cardstock | Commonly suitable | Fast ignition | Use low power, monitor continuously |
| Cardboard | Often suitable | Fire and adhesive content | Verify coatings and run a small test |
| Laser-grade plywood | Often suitable | Glue pockets, smoke, charring | Confirm adhesive and thickness |
| Natural cotton, wool and silk | Often suitable | Flame, smoke and finish chemicals | Confirm coatings and test edge response |
| Polyester and selected synthetics | Conditional | Melting, fumes and coatings | Confirm polymer and ventilation |
| Vegetable-tanned leather | Often suitable | Odor and smoke | Verify tanning method |
| Chrome-tanned or artificial leather | High caution | Unknown additives or chlorine-containing layers | Obtain SDS; use another process if uncertain |
| EVA foam | Conditional | Smoke, additives and fire | Verify EVA grade and any adhesive layers |
| Purpose-made laser rubber | Conditional | Formulation varies | Use only a documented laser-compatible grade |
| PVC or vinyl | Do not cut in a standard laser workflow | Corrosive and hazardous chlorine-containing fumes | Use a mechanical cutter |
| Fiberglass and carbon-fiber composite | Generally avoid | Fibers, resin decomposition and poor edge quality | Consider waterjet or mechanical machining |
| Unknown plastic or foam | Do not test casually | Appearance does not identify chemistry | Obtain SDS and supplier confirmation |
Materials commonly cut with a CO₂ laser
Acrylic
CO₂ lasers are commonly used for verified PMMA acrylic. Cast and extruded acrylic respond differently when engraved, and thickness affects speed and edge quality. Do not assume every clear plastic is acrylic. Polycarbonate, PETG and styrene may look similar.
Paper and cardboard
Paper products cut quickly but can ignite. Keep the work area clean, use appropriate air assist and extraction, and never leave the machine unattended.
Wood and plywood
Natural wood and laser-grade plywood can cut well. Resin, density, moisture and adhesive layers change the result. Plywood voids and glue pockets can produce incomplete cuts even when the surface looks uniform.
Fabric and textiles
Natural uncoated fabrics are commonly processed. Some synthetic fabrics produce a sealed edge, but formulation, dyes, waterproofing, flame retardants and laminated films must be checked. See the detailed fabric laser cutting guide and safe fabric guide.
Leather
Vegetable-tanned leather is accepted by several university laser facilities. Artificial leather and chrome-tanned leather require more caution because the composition may be unclear. Use the supplier’s SDS and confirm every layer.
Materials that need special caution
Foam
“Foam” is not a chemistry. EVA, polyethylene, polyurethane, polystyrene and PVC foam behave differently. Some facilities approve specific EVA grades, while others ban all foam. Read the laser cutting foam guide and verify the exact product.
Adhesives, laminates and coated textiles
The base fabric may be acceptable while the adhesive, ink, release liner or coating is not. Evaluate the complete construction that will enter the machine.
Reflective and unknown materials
Reflective surfaces can redirect energy. Unknown plastics and composites can produce dangerous fumes. Do not use a burn test as the only identification method.
Materials to keep out of a standard laser cutter
- PVC and materials identified as vinyl or chloride-containing.
- PTFE and other fluorinated materials unless an engineered process explicitly permits them.
- Unknown plastics, foams, artificial leather and laminated materials.
- Fiberglass, circuit boards and epoxy-rich composites.
- Materials containing halogens or undocumented flame retardants.
- Any material prohibited by the machine manual or facility risk assessment.
How KASU should document a material test
For every published settings table, record the material trade name, polymer or fiber, supplier, thickness, color, laser model, tube power, focus, speed, power setting, air assist, extraction, number of passes and observed edge quality. A settings number without those conditions is not transferable.
Use KASU’s application selector to find a starting machine category, then request a sample cut with the exact production material.
Frequently asked questions
What materials should never be laser cut?
PVC and other halogen-containing materials are a clear exclusion for standard workflows. Unknown plastics, coatings and composites should also stay out of the machine until their composition and controls are verified.
Is a material safe if another laser shop cuts it?
Not necessarily. Machines, extraction, filters and facility risk assessments differ. Follow the policy for the specific machine and site.
Can laser settings be copied from the internet?
Use them only as a starting point. Power calibration, optics, focus, air assist, material formulation and thickness change the result.
What should I send for a KASU sample test?
Send the SDS, supplier and grade, thickness, color, coating details, artwork, quality requirement and expected daily volume.