The Saltwater etch process

Step 17 The etch tank setup

It is useful to have a light shining on the other side of the board, as the light shining through the etched portion will allow you to see the progress of the etch.

I should recommend that you do not set this up close to your keyboard as the salt solution is corrosive if it gets into electronic equipment.

It is also helpful to have a tweety bird watching over you. In fact, I shall disclaim all responsibility if you do not have a twee ...