[Butcher]

For making cold plates you only really need to drill and maybe tap copper which a drill press and hand tap should be more than adequate for. Copper can be a bit of a pain to drill as it gums up a lot more than brass or alu - I use cutting oil (marketed as just that), it's basically a very light mineral oil, about the viscosity of cooking oil and a similar colour. you should be able to pick some up from any decent tooling shop for a few bucks.