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> Just though of something. What if you did the above, but depositedWould that not damage the needle? how about a grease before spraying,
> etching paste to start etching the areas you did not want. After
> laying down the paste, you could spray the board with acrylic/enamel
> paint as a mask, dry a few minutes with a hair dryer, wash the paste
> off then do your etching. I will try latter today if I can.