I have not etched anything for twenty years. I have a Job where I
need to etch a Celtic knotwork pattern into a sheet of silver for the
cover of a book. they do not want it pierced through. Questions;
How do I apply this complex pattern, in the form of a resist, to
the metal sheet? Is there some sort of printing process I can use?
How do I use nitric acid to do this? Dilute it, how much? I have a
quart of nitric that I can use but it is full strength.
Is there a good book that will guide me?