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2Instructables221,928Views11CommentsSan DiegoJoined July 19th, 2012

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  • Dry Film Photopolymer for Making Circuit Boards

    Hi, Here I used it without taking care of the light just to have good pictures but when I use it I use a yellow light all the time. I also store it covered in a dark plastic, but even though the product has a life time of at most one year or until you notice that the color of the paper is violet instead of blueish.

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