How It's Made S16E7 — Audio Vacuum Tubes, Light Bars, Wood Model Aircraft, Metal Snare Drums
7.4
How It's Made•Season 16•Episode 7

Audio Vacuum Tubes, Light Bars, Wood Model Aircraft, Metal Snare Drums

7.4/10 · 21 votesNov 12, 201021 min

Ranked #12 of 13 in Season 16•−0.3 vs season avg

Discussion

Delicate electrodes and control grids are assembled inside glass envelopes that are evacuated and sealed to form audio vacuum tubes. Optical modules, wiring and housings are combined into emergency light bars; lightweight wooden pieces are cut and joined into model aircraft; and formed metal shells

Season 16 Episodes13

Cast1

Lynne Adams

Lynne Adams

Narrator (voice)

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Episode Summary

"Audio Vacuum Tubes, Light Bars, Wood Model Aircraft, Metal Snare Drums" is episode 7 of How It's Made season 16. It scored 7.4/10 from 21 votes, ranking #12 of 13 episodes this season (season average 7.7). It aired on November 12, 2010.