copper pipe
Posted by manny kramer on March 29, 19100 at 14:15:47:
I have a 1/2 in copper hot water pipe attached to the joists in my crawl space. I want to solder in another heater so I carefully drained the water system and tried heating the pipe w my propare torch. After 10 min the pipe still would not melt solder! Do I need to heat longer or get a more intense hest?

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