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UV Exposure times

2067 1 Jan 15.2020, 17:54:19

I am about to create my first home made PCB using photo resist board. I have a UV box, and a transparency with the artwork. All I need to do is place the artwork on the glass, then the board on top of it, close the lid, and set the timer for a few seconds.
I am not sure how long I need to set the UV timer for, does anyone know?

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