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Make Your Own Solder Mask Overlays

Make Your Own Solder Mask Overlays
The use of solder-resist lacquer or film gives a printed circuit board (PCB) not only a professional appearance but also prevents unwanted solder bridges causing circuit malfunctions. This article demonstrates how you can add the protection of a solder mask to home-made PCBs without the need for specialist equipment.
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Issued: July 6, 2011.

The required substance for making the developer is caustic soda, not washing soda.

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