Some years ago Electronics Australia ran an article on DIY microwave maintenance. All the stuff abt. Inter alia, they stated that the transformers were designed for a constant voltage. For cheapness they run a welder along the edge to hold them together. My suggestion would be to loosen up the weld with some deft application with the trusty angle grinder.
Real radios glow in the dark.
Bob Power is no substitute for skill. If it stayed up last winter, it was too small. The topic of glowbugs is very interesting, For quite some time I have wanted to build a small tube transmitter and may yet get one built before the summer. I picked up a new 117N7 tube and have some plans from an old book called Radio For The Millions for just such a transmitter and a matching regen receiver. Hopefully I will get off by butt and build them and have some more fun on the air.