CO2 Laser Marking Machine Marking on Wood&Acrylic
A CO2 laser marking machine is an excellent tool for engraving and marking on materials like wood and acrylic. Here’s a detailed guide on how it works, best practices, and tips for optimal results:
1. How CO2 Laser Marking Works on Wood & Acrylic
CO2 Laser (10.6 µm wavelength) interacts well with organic materials (wood, paper, leather) and plastics (acrylic, PMMA).
Wood: The laser burns/ablates the surface, creating dark or light engravings depending on power and speed.
Acrylic: The laser melts/vaporizes the material, producing a smooth, polished finish (especially with cast acrylic).
2. Best Settings for CO2 Laser Marking
For Wood:
| Parameter | Recommended Value |
|---|---|
| Laser Power | 20% - 60% (varies by wood type) |
| Speed | 100 - 500 mm/s |
| Frequency | 5,000 - 20,000 Hz |
| Focus | Adjust to material thickness |
| Air Assist | Recommended (reduces charring) |
Darker Engraving: Higher power, slower speed.
Lighter Engraving: Lower power, faster speed.
Avoid Deep Burns: Too much power can cause excessive charring.
For Acrylic:
| Parameter | Recommended Value |
|---|---|
| Laser Power | 15% - 50% |
| Speed | 200 - 800 mm/s |
| Frequency | 5,000 - 20,000 Hz |
| Focus | Slightly defocused for smoother edges |
| Air Assist | Recommended (clears fumes) |
Transparent Acrylic: Engraved areas appear frosted.
Colored Acrylic: Contrasting marks (dark on light or vice versa).
Cutting Acrylic: Requires higher power (70%-100%) and slower speed.
