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Thread: New lense , flat up or down?

  1. #1
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    New lense , flat up or down?

    Curve is up? I see it now...

  2. #2
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    Dome on Top



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    Mark
    In the Great Northwest!

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  3. #3
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    Either way will work but I believe a focal distance slightly charges if it is put with the curve down.
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  4. #4
    Join Date
    Mar 2018
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    Quote Originally Posted by Mike Lysov View Post
    Either way will work but I believe a focal distance slightly charges if it is put with the curve down.
    As in reduces it or lengthens it but "thins the beam"?
    Epilog Fusion M2 40 Watt CO2 Laser

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