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make your own vacuum tubes?
Posted: Mon Jan 07, 2008 8:57 pm
Posted: Tue Jan 08, 2008 4:37 pm
Roll your own cathode tubes
Posted: Wed Jan 09, 2008 4:02 am
Along the same theme, Roll your own cathode tubes.
via http://blog.makezine.com/archive/2008/0 ... e_tub.html
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