Yikes! Another CT-100 !

[ohohyodafarted]

This is, in theory, and I emphasize "in theory" something that might possibly work. However, the real problem would be in tapping into the old stub of the pinchoff in the base, connecting up to it for the pump down, and then somehow sealing the pinchoff without losing the vacuum.

IN the real world, when a tube is pumped down, it is done through a 4 inch length of glass tubing that sticks out the base of the tube where the wires exit. That 4" long tube is connected to the vacuum pumping system. After the tube has been properly evacuated, an electric heating element that was placed around the glass tube, right up next to where the wires exit, is turned on. IT heats the glass tubing up to the melting temperature, and the vacuum inside the tubing causes the molten glass to colaps, thus sealing the tube. the remanant of the 4 inch long glass tube is snapped off right where the tubing made the "pinch off" seal.

I personally cant see how you would tap into and then seal off a crt in the method you propose. It would be easier to just re-gun teh thing and do a conventional rebuild, and that way you have a real rebuilt crt with NEW emission to boot.

The issue if rebuilding the 15GP22 is going to be solved. You just have to have faith. "So let it be written...so let it be done"