During the laser engraving and cutting process, if you feel that the lens hood is too far from the surface of the material to produce the best light-blocking effect, you can follow the steps below to adjust the settings for the lens hood.
- Read the current value of the Laser Height displayed on the Home Screen of the Touchscreen. Here we use 21.0 mm as an example.
![激光高度.png](/snapmaker2/sm2_manual/%E6%BF%80%E5%85%89%E9%AB%98%E5%BA%A6.png)
- Swipe left and select Control.
![激光页左滑.png](/snapmaker2/sm2_manual/%E6%BF%80%E5%85%89%E9%A1%B5%E5%B7%A6%E6%BB%91.png)
- Use a blank piece of paper, and use X-, X+, Y-, Y+, Z-, or Z+ to move the Laser Module to the top of the paper. The machine coordinate of the Z Axis should match the value of the laser height, which is 21.0 mm.
![移动至特定激光高度.png](/snapmaker2/sm2_manual/%E7%A7%BB%E5%8A%A8%E8%87%B3%E7%89%B9%E5%AE%9A%E6%BF%80%E5%85%89%E9%AB%98%E5%BA%A6.png)
- Turn the lens hood until it is 1 mm away from the paper. If you want to check the light-blocking effect, please do so after you put on your Laser Safety Goggles and tap Laser Power. Set a relatively small value (e.g. 1%) for Laser Power and turn on the laser.
![调整遮光罩.png](/snapmaker2/sm2_manual/%E8%B0%83%E6%95%B4%E9%81%AE%E5%85%89%E7%BD%A9.png)