Ron Soyland is awesome. I wish more people do in depth videos about glass blowing, particularly for electronics equipment. There is not many resources out there that go into minute details related to vacuum tube manufacture. Stuff like selecting the right alloys to match the expansion coefficient of glass, or what a getter is, or how to join glass, the annealing process, vacuum equipment. That kind of thing. Previous generations take a lot of that knowledge to the grave, which I find sad.