This was sent in an e-mail to my webmaster:
I have been trying to build a sight glass for this next em83 tube set and it has been a real chore. If you are interested you can check out these pics of the housing for the tube. This enclosure works really well although I would never venture to build another because of the difficulty and the hours required.
The set will also feature right angle gears to run the dial's pointer shaft and is particularly demanding because the dial platform is at an angle to the floor of the cabinet. This creates all manners of problems but I am getting them solved one at a time.
Starting out I assumed I'd have a lot of room to work with but as things progress that idea has gone by the board. Shit, I always manage to misjudge something or outright forget about something. The first thing that became apparent was there was not room enough for the variable capacitor with the gear installed. So I had to make the back panel 1/2" thick so I could router out a pocket for the back of the capacitor to sit in. Also the angled sections of the top panels are not really flat and the bottom surface of the dial glass bezel will have to be fitted to it. And so it goes...one thing right after another. l make it work one way or the other.
Look–in Glass EM83 Radio
Views of this radio being constructed
Milled 1 inch into bottom for socket to go into
Milled 7/8 inch hole just large enough for tube but not socket
Socket slides up 7/8 inch channel and stops
Milled insert to slide up to bottom of socket to trap it in place
Insert in place trapping socket
Plate on top holds top of tube centered in slot
Inside view of the radio
Front panel view showing slot for viewing the tube.