NEJE software provides automatic low light. If you use laserGRBL and lightburn software to adjust the focus, you need to enter a command: M3 S1; and give a motion command, for example: G0 x10 y10 f1000; so that low light can be lit;
N40630 module: If it is mainly used for engraving, adjust the focus to a distance of 5mm below the light barrier; then slide the laser through a 5mm spacer to use a fixed focus method;
The cutting and focusing methods are as follows:
1.Step 1: Adjust the bottom of the module and the cut honeycomb panel to a fixed height, refer to the picture above. (Prepare a ruler)
2.Adjust the focus to a fixed height, refer to the picture above. It is recommended to use an object with a fixed thickness and place a gray cardboard on it to assist in adjusting the focus.
3.Simply put the restricted inner thickness directly on the cutting platform.
note: A40640 has a built-in zoom lens. If it does not meet your expectations, you can use a flat-blade screwdriver to screw the lens to the bottom. This is a standard reference.