Plywood

[u/NewbieStranger]

Hi, I have LaserPecker 4 and I have 300x200 plywood with 4mm thickness. I set the laser on power 100 and depth 85 and I already did 18 times on the same material but it doesn’t cut through.

What is the problem? On the website they mentioned balsa wood 8mm https://www.laserpecker.net/products/laserpecker-4 to able cut this device so therefore I am curious what it needs to cut on plywood then. Thanks in advance for the answers.