>>1554213I'm still a bit iffy on where the line is drawn. It is a bit like "when is a soup not a stew?" type of thing. I mean, with enough local materials and time you can go from hitting things with wood clubs to hitting things with carbon steel hammers. I mean even a flint arrow head needs tools to be made. From there, it is only a matter of time and resources and you can make everything in the Gingerly series of books for a metal workshop.
https://www.youtube.com/watch?v=O4-75uvrMPw 