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Thread: Poly cracking... What's up?

  1. 08-27-2009, 01:04 PM #51
    jrh291
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    You will.
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  2. 12-13-2019, 10:30 PM #52
    OpticianHere4u
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    polycarbonate lenses may crack when the lens made is to big and the pressure of screwing it in causes an internal crack.
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