I absolutely love this 1940s factory promo film from RCA , describing how they make metal-can octal base vacuum tubes. Check out the all-American family in the living room, huddled around the radio, dad in 3-piece, reading the paper, mom sewing, little Timmy and Janey player checkers on the floor. Gee willikers!

[Sent to us by MAKE subscriber Rob Cruickshank. Thanks, Rob!]

Electrons on Parade pt 1 – RCA

Electrons on Parade pt 2 – RCA

Make your own vacuum tubes?

Gareth Branwyn

Gareth Branwyn

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 person’s memoir,” called Borg Like Me.

  • Kent KB

    Watching this makes you long for the simpler times, and buying IBM at $7.00 a share….