Moron alert again for rebuilding 15GP22's

[julianburke]

I'm sure this got your attention but I didn't know what else to call it.

Regarding the CT100 that just ended on EVILbay for good money, had a comment added at the bottom where the seller can put your question into the ad. The moron told him that ETF is rebuilding these tubes and thought he would like to know this to tell prospective buyers.

Hell, we'd all like to know this----if it was true!!! After the very nice and well written info that was obtained in the experiment of trying to rebuild 2 of these fragile tubes that had 100% failure, you would think that info would have "leaked" out--no pun intended! Instead someone is saying that they are rebuilding them now. Moron alert!!!!!

Uhhh Steve, you aren't doing anything up there at ETF that you haven't told us about, have you???

UPDATE: One of the talks at the ETF was Bob Galanter (and John Folsom) giving their account of the two 15G's they tried to rebuild at Hawkeyes. Everyone was leaning on their chair to hear this one! It was very informative and promising. The main problem is the joining of the faceplate to the bell of the tube. Newer tubes use a frit which is a special glass epoxy to join the two pieces of glass which was not available at the time of the 15G production. They joined the two pieces (actually 3-a ring washer of sorts in the center where they electrically welded them together) of metal which were each annealed to the glass workpiece and apparently worked when manufactured but developed leaks along the last 50+ years. It also poses the nightmare when trying to rebuild the tube as it leaks, leaks and leaks!