Laser Cutting FAQ: Answers to the Questions People Ask Most

CO2 lasers (the type most hobbyists and small shops use) generally cannot cut metal on their own, though some can engrave coated metal surfaces. Cutting bare metal like steel or aluminum requires a fiber laser, which uses a different wavelength suited to reflective materials.

It can be if basic precautions are skipped. The main risks are eye exposure to the laser beam, fumes from certain materials, and fire from leaving a running machine unattended. A properly enclosed machine with good ventilation and ABC fire extinguisher nearby is considered standard safe practice.

PVC and vinyl top the list — they release chlorine gas when cut, which is toxic and corrodes the machine. Other materials to avoid include polystyrene foam, ABS plastic, and anything containing chlorine, as they can also release harmful fumes.

Very. Most CO2 and fiber laser cutters achieve tolerances within a fraction of a millimeter, which is part of why they’re preferred over manual cutting methods for detailed or repeatable designs.

Some darkening on the edge is normal, especially on wood, and is simply part of how the process works. Excessive charring usually means the speed/power settings need adjusting, or the lens needs cleaning.

Yes — laser cutting is one of the more accessible ways to start a small product-based business, since a single mid-range CO2 machine can produce a wide range of items from signage to jewelry to home decor.