hi, follow the below video to set, then you can use 7w laser to cut 3mm plywood or engraving on stainless steel.

https://www.dropbox.com/s/736zpecnscpyjat/how%20to%20set%20in%20CNCC%20soft%20to%20engraving%20on%20stainless%20steel%20and%20cutting%203mm%20plywood.mp4?dl=0