-Lead sheets, dry film placed on the PCB and iron the heating roller machine.-Dry film all the long sides 2 sides.-Lead sheets to PCB exposures in radiotherapy machines by the film is placed on the PCB pad. -Then remove the clear plastic sheet overlay one another to come to smooth, then radiotherapy for 30. Sec. -After removing the PCB pads came off, and then Peel the plastic side Guide. -In a period of cleaners and bring a soft bristle toothbrush to rub the unwanted extension.-To wash with dishwashing liquid-PCB pads soaked in acid to bring copper unwanted sections.-To wash and wipe dry.
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