To optimize laser settings for clean cuts while minimizing thermal effects like charring or warping, consider the following parameters:

• Speed: Experiment with different speeds to find the optimal balance between cut quality and efficiency. Generally, slower speeds result in cleaner cuts, but too slow can cause excessive heat buildup. Start with a moderate speed and adjust based on the material and the desired cut quality.
• Power: Adjust the laser power according to the thickness and type of material. Higher power can produce deeper cuts but may also lead to charring. Begin with lower power settings and gradually increase until you achieve the desired cut without excessive burning.
• Focus: Proper focusing of the laser beam is critical. Ensure the focal point is aligned with the material surface for the best cut quality. Test different focal lengths to find the sweet spot that delivers clean cuts without compromising material integrity.

Additionally, use air assist to blow away debris and cool the cut area, further reducing the chances of charring and warping. Always conduct test cuts on scrap material to fine-tune your settings before the final job.