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In a follow-up to the amazing vid of a guy fabricating his own triode vacuum tubes, here’s a webpage from a builder who shows how he created his own crude cathode ray tubes.

Homemade Cathode Ray Tubes – Link


Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of a dozen books on technology, DIY, and geek culture, including the first book about the web (Mosaic Quick Tour) and the Absolute Beginner’s Guide to Building Robots. He is currently working on a best-of collection of his writing, called Borg Like Me.



  1. Dax says:

    Am I the only one terrified by cathode ray tubes?

    PS: Aim away from crotch ;)

  2. cokebottle tuque says:

    You know its only the possibility of it throwing x-rays that scares me and thats from lack of understanding, but still some thing to be aware of if anyone does try this.

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