15GP22 June Rebuild Results...

[eberts]

Originally Posted by wa2ise

CRT rebuilding also goes on in the 3rd world.

Wonder how well those CRTs come out, with respect to purity and so on. See
http://www.flickr.com/photos/greenpeaceindia/page2/
for more really bad news e-waste handling...

That photo was dated 2002, those are b&W monitor tubes, they are not rescreening them or removing the implosion protection banding before processing, stupid. They don't even bother washing the outside of the tube.
I doubt they still waste their time doing it, unless their reality is as desperate
as it looks.
It was less expensive to purchase pallets of surplus new tubes. Used to get new monochrome monitor tubes for 50 cents each in quantity.

Scotty should have sealed that stem into the neck a little hotter, and make sure it is annealed afterwards. About 400 degrees in a hotbox for 90 seconds.
Keep those wires away from the tipoff, he may want to put a ceramic Shawfrank cover over the tip off coil on his next try, keep the high temp away from that thin wafer.

Those 20mm getters may cause a problem with arcing if there really is 12KV volts applied to the focus anode, or those deflection plates.
Suggest mounting the getters further up into the tube.