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Depends where you're starting. If it's sticks and stones, yeah, you're going to spend a lot of time building up. Even getting to the prerequisites for the Gingery-esque machine shop will be a trick, and you definitely need machining first.
Sam Zeloof is the guy that actually did the semiconductors bit. He makes a transistor in the linked video series starting with a commercial wafer, some basic chemicals, a spinning piece of tape and an electric furnace. I read papers and just Wikipedia to get ideas for the parts he doesn't cover. The standard ways of doing things are heavily constrained by scalability, which as an artisan you don't care about, but will breeze past other things you really do, like ability to work in a small space. And, if you're starting from scratch, using only common, locally available elements.