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Posted by Speedy Jim on March 1, 2007, 1:04 pm
Andrew wrote:
> I'm working in my old Philadelphia victorian rerouting the copper
> supply lines, and I'm trying to tie into some older copper line with
> new stuff. But the joints keep failing on the old copper side. The
> lines are bone dry, and I've sanded them down to shiny copper so the
> fittings slide on nicely, I've got it all fluxed up, but the solder
> isn't taking. It looks like it's even being repelled! Any ideas why
> I'm having such difficulty? All the other joints, where the copper's
> all new are just fine.
>
> Anrew
>
Try a small tub of Oatey No. 95 Flux.
See if you can get solder to flow onto the end of
the old pipe (no fitting).
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