Series of photos as the boards are made up.
First clean all the boards
Then iron on the film (audio board as example)
The peel off the film (control board as example)
All the boards then same again bit touched up.
As they come out of the etch, note I use red electrical tape on the reverse
ground plane.
The resist layer cleaned off.
ground plane.
The resist layer cleaned off.
Pair of boards about to be etched
A simple Sodium Persulphate etch bath (note the blue colour is from the copper
in solution)
A simple Sodium Persulphate etch bath (note the blue colour is from the copper
in solution)
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