Recommended
"Z2" - Upgraded Homemade Silicon Chips
Why people recommend it
Sam Zeloof's upgraded run of home-made silicon chips, linked whenever people ask how far garage-scale semiconductor fabrication can go.
Watch for: Inspiration rather than a reproducible guide
In their words
Upgraded Homemade Silicon Chips ( published 2 months ago )...
NaturalDemon on electronics.stackexchange.com, Oct 2021. CC BY-SA.