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    [HELP!] Laser reflected into its own lens, weak burning now

    So I have a laser I was burning stuff with, and when I tried to burn this aluminum object, the light reflected in its own lens and when i use the laser, it looks foggy. But it does work, because it burns, just the only problem being a blurry looking lens so it doesn't focus properly. What can I...
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    Bought Efest 700mah batteries

    I have researched and found that efest and aw batteries are the best kind So, what does it improve for my laser? What differences will i notice using this type of battery over ultrafire


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