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butthurt [soylentnews.org] writes:

Hackaday featured [hackaday.com] the work of "Simplified," a craftsperson who moved from building incandescent bulbs and gas discharge lamps to making vacuum diodes and triodes [neocities.org], and an audio amplifier [neocities.org] designed around them.

In a 2014 article [hackaday.com] the site set forth procedures for making what it calls "artisanal vacuum tubes."

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