Follow this laser parameter advice to achieve a flame-polished edge when cutting acrylic:
Power: As a general rule, more power yields better results. A good rule of thumb for achieving a polished cut and good production speed is 10 watts per 0.04 inches (1mm); and 60 watts can process 0.5 inches (12mm), however it will be slower and the quality will not be as nice. Your method may also depend on your preferences.
- 400 watts for 0.125 inches (3mm) = fastest speeds
- 400 watts for 1.0 inches (25mm) = best quality
Frequency: Frequency depends on the material you are using. You should start high on cast acrylic (10-20 khz); and start lower on extruded (2-5 khz). Decreasing the frequency means there will be less pulses, which results in less energy in the material. This causes:
- Less flaming
- Less boiling (too much heat in the material)
- Slower cutting speed
Speed: To achieve a flame-polished cut, set the speed to less than 0.4 inches per second (600 mm/minute). For best results on a separation cut, use maximum power and maintain maximum frequency.
-Josh Stephens, Trotec Laser