Are you attempting to produce a photographic work of art via the contact print process? If so, a contact printing frame with a scratch-free glass and an even light source should be all the tools you need. You do not need to engineer the process to death - you just need a good negative that has the printing characteristics that match the paper you are printing on and your personal vision as an artist to guide you to a finished print. You should also be having some fun in the process!