By the way, I'm not reading back through all the posts, but I'm surprised that people use the boot from the metal tube to hold a glass tube, which has a more bulging shape than the 21AXP. IIRC, when I tried it, it seemed like it would force the deflection yoke back too far on the neck. When I converted mine (temporarily) to a glass tube, I adapted some hardware from a CTC-7 that had a metal framework that held the bell of the tube, by adding some extension threaded rods and hinges to attach to the bezel hardware and bend around the shape. I removed the boot and kept it for when I got a 21AXP, rather than drilling it or anything.
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Old TV literature, New York World's Fair, and other miscellany
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