Treblig 1958
It may seem disappointing that the extension and hook are separate pieces but I can assure you the assembly is incredibly strong. The ribs and spacers came off easily with a Bernz-o-matic tourh and Mapp gas. Anyone can do this in their garage. The hook is held with a top plate and screw. It too had a small amount of brazing but was mostly held with solder. The barrels were then clamped by the hook securely in a vise and heated with oxy/acetylene. I was amazed at the amount of heat it took to get this thing apart. The lines of the individual parts did not appear until the thing was approaching a bright orange. I had to soak it a good three or four minutes, pulling and pushing on the tubes before I got any movement at all. Once apart, I was very impressed by the design and fit of the parts. I'm guessing that it was fit up in a jig and furnace brazed, ribs and such added later. I'd like to know the history of the barrels in the beginning of the thread but under normal or heavy use I don't see how they would come apart.

Dave Elliott