Homebrew Circuit Boards: Methods? Supplies?

I am building SIMMs of various sorts, so the .047" - .053" requirement is firm. They must fit properly in the sockets. Developer and stripper are not etchant. After applying and exposing photoresist, one uses developer to remove the unexposed (or exposed for positive) photoresist without affecting the exposed (or unexposed) photoresist. After etching the excess copper away with an etchant, the polymerized photoresist is still present on the protected copper traces and must be removed using a stripper. So, when using a photoresist system, one needs developer, etchant and stripper. However, I suspect that the stripper, at least, may be some commonly available chemical such as acetone. And I believe that Tony mentioned that developer is usually just a strong alkalai. Thank you for the helpful information and for sharing your experiences. The supply source and books look interesting. Jeff Walther