Quote Originally Posted by miked View Post
How many "ends" does it take to make this worth while? I have been interested in the refining of pm's for a while but too many things to do now. Interesting thread, Mike.
Mike it is impossible to say how many ends it would take to may a troy ounce of silver, factory joints from early evaporators and condensers I've seen lots of silver. where as technology improves the use of precious metals is much less but still there.

Where the capillary tubes co join there could be an ounce or more, I've had evaporators with two sets of capillary joints. Anything with a sporlan expansion valve valve would be older stuff.

I believe that silfoss used for copper to copper joints is about 20 or 30 percent silver, while silver solder used for copper to steel joints is much higher.

With silver prices going stratospheric - save it regardless.

I noticed that we have a refrigeration tech on board, maybe he is able to shed some light onto your question. I'm 30 years out of date, still thinking in yesterdays terms.

Regards
Gustavus