2" neck glass for round color CRT's wanted

[ohohyodafarted]

Looking for 2" soda lime glass Neck Glass tubing for rebuilding 21" round color crt's. Borosilicate glass is not suitable. If you have old 2" neck flares for picture tube rebuilding, or any random lengths of 2" soda lime glass tubing, in your collection of old tv stuff; please let me know.

Also, if you have dead 21" round tubes that you can donate please let us know. We can salvage 2" neck glass from dead 21" round color crt's in order to use the neck glass to rebuild other tubes.

[Electronic M]

If you can't find anything better, I've got a 21FBP22 I've been saving for rebuilding if that ever restarts... That tube had a nice picture until it spontaneously cracked between 2 of the base leads and went to air.

Is this part of the 15GP22 rebuilding project?

[ohohyodafarted]

Yes Tom. I am turning over everything that John Folsom and I had accomplished to John Yurkon and Nick Williams. I would not expect anything to happen in the short term, but with John Folsom having passed on, and my health in decline, passing the baton on to John and Nick is the logical thing to do.

One of the primary pieces of material for rebuilding 15GP22 and 21" round color tubes is 2" soda lime NECK GLASS. We have searched world wide and nobody is making soda lime glass tubing in 2" diameter. All they make now is 2" borosilicate and due to the difference in the coefficient of expansion, borosilicate is incompatible with soda lime glass. So unless we can find some NOS lengths of 2" soda lime glass, we will need to salvage 2" neck glass from dead tubes that are headed for the dump.

I also discovered that dead 7JP4 tubes are also suitable donors for 2" neck glass.

Each tube to be rebuilt, requires about 3 to 4 inches of 2 inch neck glass to extend the neck on the tube, in order to install a new gun assembly.

If you are going to convention we can talk more about all of this at convention if you like. There is still a long long way to go, but every journey starts with the first step and a will to persevere.