The Saltwater etch process

Step 11 Apply etch resist

Now you paint the area with some etch resist.

It can be any paint - it has to hold together under water, that's all. Permanent marker comes in an easy to apply form, and that is what I use.

You can use nail polish, if you are lucky enough to have a girlfriend and she doesn't mind your spending time hunched over bits of board and components.

You need a thorough thin coat, one which can be scratched away in a thin line.

A thick coat is likely to pull away in flakes when you attempt to score lines on it.

Comments

[eclarep]

 Hey, girls make circuit boards too!