| Howdy Alan,
Well, when i was building transformer parts, using alot of 1/2" dia. copper tubing for hook up leads, all we used was an acetylene torch and silver soldering rods.
I believe that everyone else may be thinking of a solder that is "pliable" and probably comes on a roll, what I was talking about and i apologize for not being more specific was silver brazing rods.....no flux (not even in the rods). And these rods do require an acetylene torch to melt them.
As for the issue of melting, like i said above, we used alot of 1/2" O.D. copper tubing and copper strapping and I can say I never unitntentionally melted any of them in the 20 yrs i worked there.
You can have the copper glowing cherry red long before it melts.
anyway, just wanted to clear up my earlier statements
have a good day,
Greg |