• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Interesting Mullard film

Let's see if I can blow-up this forum.....

Typical RCA. Lots of skilled hand-work at low wages.

Over at Mullard, Blackburn:
Somewhat more mechanization.

Dr Allen B. DuMont mostly invented the service oscilloscope, but in 1953 he was bragging on his TV work.

This is wrong: a male tube maker in the Czech Republic.

Behind the scenes at AmplifiedParts"

Apex tube matching:
https://youtu.be/0-WWAc1bwRs

Inside of the capacitor factory:
https://youtu.be/o3rtVEYp110

CE Manufacturing Can Capacitor Production:
https://youtu.be/yfSSIO2c_ak
(They still have machines from P.R.Mallory & Co., Inc.)

Shenzhen Jinmao Yuan Technology Co., Ltd., electrolytic capacitor company and factory:
https://youtu.be/NNKd-zuTupY

How to make a Resistor (precision wirewound):
https://youtu.be/YlvQXowSoOA

You can't resist us! (Resistor making in India):
https://youtu.be/C8mc6bKKkJQ

Chip Manufacturing - How are Microchips made? | Infineon
https://youtu.be/bor0qLifjz4
(Is that the Portland Maine foundry?)
 
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Gor blimey no, guv. Only those selected for public speaking. And at that point, I'll stop because I remember that I was the one who said, "No political posts on diyAudio".
Flashback: during my stint at the NATO HQ in the south of The Neterlands we often had to entertain and brief politicians (the ones that hold the strings to the purse). A friend of mine always had to do the briefings. Not that he had to do anything with the material, he had to learn it by heart, but he spoke so 'British'.

Jan