Phillip944 wrote:

I'll admit it... I've never soldered anything in my life. So, to
replace a corroded, leaky copper elbow joint, my father-in-law
instructed me to heat the pipe, pull off the old joint, then replace
it... after proper preparation, of course.

The problem is that I heated the old elbow, but nothing happened. I
heated the pipe & the elbow... nothing. Couldn't get it off.

Any suggestions would be greatly appreciated, as I dread the cost of
having a plumber do what seems to be a simple replacement.

I'd cut it off. BTW, make sure you buy lead-free plumbing solder and
some plumber's flux for the re-installation.

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