wrote in message
oups.com...
A hard solder commonly used on copper is Silphos. It is mostly copper,
but with a little silver and phosphorus. Plain propane is hot enough,
but with the size of your part you will either have to figure out a way
to keep the heat from escaping or use multiple torches ( or both ).
If I were doing it, I would use some insulating firebrick to surround
the part and a couple of propane torches. I prefer the rods with 15%
silver over the ones with 5% silver. The Silphos should be available
at any welding outlet and probably at a plumbing supply house.

Get some and try it out on some scraps of copper.

As for where to get copper...........in Seattle try Alaskan Copper and
Brass.


Dan

Any welding supply shop will have it.

Lane