I’d highly suggest you guys check out the books written by David Gingery.
“Gingery is most famous for his Build Your Own Metal Working Shop From Scrap series, which details how to build a reasonably complete machine shop at low cost, often from scrap metal and other items. The hobbyist starts by constructing a small foundry capable of melting silicon-aluminum and zinc alloys from recycled automotive parts. Then green sand castings are used to make a metal lathe. The lathe is the first machine built since it can be used to help build itself. The lathe and foundry are then used to make more complicated machine tools.”
I’ve only just started to dig into them and I’m more than impressed.
Canadian Patriot. Becoming self-sufficient.