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How tubes are made. Interesting video

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How tubes are made. Interesting video
« on: 23 Sep 2009, 12:37 am »
Interesting 30 minute video on the complexities of tube making
By Mullard

http://www.techtubevalves.com/about_us/film_reels.php
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PMAT

Re: How tubes are made. Interesting video
« Reply #1 on: 23 Sep 2009, 05:06 am »
That blows my mind. I loved that film.
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