This is a PDF of how we do my photo etching in a very simplistic and basic way. With help (cos of my crip status!), We photoetch small parts and larger ones, depending on what's needed. We even help out friends (see bit in PDF where we made aircraft ribs).
Hope its helpful and sets more on the same course.
Search for this Link:
If you click on this one it won't work!
Just search for it!
Look for this,
(Low volume or single piece photoetching)!