Questions about lens

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Here was a update about Ray wiki, hope it helps:

Ray Wiki Content Updates

Dec 22 2023 New Content 10W Laser Module Installing the 10W laser module on Ray 10W/20W/40W Laser Module Adjusting the laser height for 3-axis and 4-axis machining on Ray Maintenance Cleaning the heat dissipation fan Cleaning the steel strip Cleaning the laser lens protector of the 10W/20W/40W Laser Module Replacing the laser lens protector of the laser module Cleaning the laser platform of the 20W/40W laser module Cleaning the bottom cover of the 20W/40W laser module …