welll, i was trying to made a pcb with a laser, The FR4 board was painted black to remove the paint from areas where it wasn’t needed before submerging the board in ferric chloride; however, the laser power was so high that the copper conducted heat downwards, causing the paint to peel off.
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say , what happened?
welll, i was trying to made a pcb with a laser, The FR4 board was painted black to remove the paint from areas where it wasn’t needed before submerging the board in ferric chloride; however, the laser power was so high that the copper conducted heat downwards, causing the paint to peel off.
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