Let's talk about the first point: maybe you used to cut perfectly with your current strength and speed. (The laser tube, power supply, reflector and focusing lens of the laser machine are consumables, which will slowly age over time. ) Solution: 1: Increase power or slow down. Better slow down. Too high power will cause too much loss to the laser tube. Try it several times until it meets your requirements. 2. Replace the laser tube and focusing lens of the laser machine (this cost is too high, it is best not to choose this one, in this case, there is no need to change it).

The second point: solution: try it several times at different heights until the most suitable time.

The most direct way to solve this problem is to reduce the speed. I hope it helps you.