
Quoting the description from Amazon (link below)…
“[It] is a progressive series of seven projects. Beginning with a simple charcoal fired foundry, you produce the castings for building the machine tools to equip your shop. Initially the castings are finished by simple hand methods, but it is not long before the developing machines are doing much of the work to produce their own parts.”
You start with learning how to cast, then work on casting parts for a lathe and other projects.
edit: It looks like the site's author has some of these books! He has a page detailing building the lathe: https://www.backyardmetalcasting.com/lathe1.html
Starting with green sand, scrap metal, charcoal, and a pot, pour parts to build a lathe, and so on.
It looks like he has put out quite a few "how to" books: https://www.thriftbooks.com/a/david-j-gingery/381968/
There's a classic set of books, "Build Your Own Metal Working Shop From Scrap", on this.
The kid's version: "A Boy and a Battery" (1942).[1] There's also "A Boy and a Motor", on how to build your own electric train set from old metal cans, some wire, a hammer and tinsnips, and the skills of a master machinist.
Might build the shaper out of there someday but currently it seems like it would be a better use of my time to buy an import lathe (assuming no natural disaster)
Fabs seem to be the far edge of tools-to-make-the-tools dependency stack, with some of the necessary sorcerous gadgets (like EUV lithography) themselves only having a single supplier with the necessary secret incantations on the other side of the planet.
Does the knowledge even exist to bootstrap things back up again should the present infrastructure and supply chains be sufficiently disrupted?
I've long admired David J. Gingery's 'Build Your Own Metal Working Shop from Scrap' and wondered whether anything like it is even possible for integrated circuits.