Aluminum Cut quality on Laser (Trumpf)

[Osang]

What is the best solution for this cut quality issue? Usually happens when cutting 6mm thickness and above. Please see attached pictures. Any advice is greatly appreciated.

Similar Threads:

• Help with cut quality on Bodor (with 150w RECI) Laser
• Chinese 50w laser cutter y axis cut quality
• Need Help!- Old problem - CO2 laser cut quality in Acrylic sheet
• 3/16 Aluminum - POOR CUT QUALITY