In this vid, geek goddess of all things awesome, Jeri Ellsworth, details how she made her own NMOS transistors using a a kiln, rust and stain remover, Emulsitone spin on dopant, wafer she scored on eBay, and some vinyl sign-making material.

Homebrew NMOS Transistor Step by Step – So Easy Even Jeri Can Do It


Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.

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