[ohohyodafarted]

Thanks for posting this Wayne! Where did you find it. This is the best quality example of this photo I have ever seen and it answers some questions I have had about the welding process.

The tube is obviously a dud that was used for photographic purposes. The lead wires and gun were not in the tube at the welding stage in production. Guns are installed after the tube is welded.

With the good resolution in this photo, it can be seen how the rotary welding table operated. Just the very edge of the metal ultor rings are exposed for welding. The rotary welding jig has an upper and a lower pressure ring that conceals most of the ultor rings. I always imagined that there was some sort of heat sink protection, and I would imagine the upper and lower pressure rings are probably machined from copper. You can see the rollers on the clamping levers that are used to apply pressure to squeeze the the two halves of the ultor rings together during the welding process.

This is an outstanding photo Wayne! Where did you discover this and are there any more in this series of photos about the 15G?

Thanks,
Bob