"Mike" wrote in message
...

"IMM" wrote in message
...
- Solder up.

why do you recommend solder,
which is soft and cracks easily, when the
2 tubes have differential thermal expension?

It worked well. You could use compression joints tightly screwed up.

How the **** are you going to slide a compression joint inside the outer
pipe ?

Please read posts again. It was clear.