Laser-Safe and Prohibited Materials

Some materials are perfectly safe to laser. Others release toxic or corrosive gases, damage the machine, or catch fire easily. If you cannot identify a material, do not put it in the laser.
To be confirmed: the approved materials list for WMI's laser. What a laser can cut depends on its type and power, so check with a trainer before cutting anything not on that list.
Never laser these
Material
Why
PVC and vinyl (including vinyl sheet, many faux leathers, some foam boards and records)
Releases chlorine gas, which is toxic and corrodes the machine.
Anything containing chlorine
Same reason as PVC.
Polycarbonate (Lexan)
Catches fire and discolors rather than cutting cleanly.
ABS
Melts rather than cuts and gives off harmful fumes.
Fiberglass and carbon fiber
The resins give off harmful fumes.
Coated or mirrored materials you cannot identify
Coatings may contain any of the above.
Usually safe, if the machine is set up for it
These are commonly laser-cut or engraved. Ask your trainer which ones apply to our machine and what settings to use.
Natural wood and plywood
Paper and cardboard
Cast acrylic
Vegetable-tanned leather
Natural fabrics such as cotton and felt
Whatever the material
Never leave the laser unattended. See Digital Fabrication: Laser Cutter.
Make sure the exhaust or filtration is running. See Shop Safety: Air Quality.