It's a bit hard to tell what's wrong based on that picture. Can you get one with better focus and also explain what's happening compared to what should happen? All I can see in that shot is a piece of clear acrylic with some etching?
We have had a Chinese 45w laser for just over 12 mths, for 7 mths we didn't have a problem at all, ran smoothly now we are having this issue i will attach some photo's.
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It's a bit hard to tell what's wrong based on that picture. Can you get one with better focus and also explain what's happening compared to what should happen? All I can see in that shot is a piece of clear acrylic with some etching?