[Kaibeezy]

All this plumbing talk got me remembering the time I redid a bunch of the copper in a fixer-upper. Reading up on solder joints, I got into the underlying metallurgy, and discovered solder isn’t “glue”. You have to abrade it to remove the oxide, quickly cover the raw copper with flux, and then let the boiling flux draw the molten solder into the joint. It doesn’t take much, and you end up with a metal-metal-metal bond. Once I understood the point, the joints were a breeze. Later, I had a pro plumber in to deal with some iron pipe, noticed my copper work and was impressed. Very satisfying.

[scotty79]

I'm really not confident about copper pipes. Metals in solder are very different electrochemically than copper. There might be other electrically connected metals in the installation. There might be some impurities grains in the copper.

I've seen videos of copper pipes developing pinhole leak from corrision.

I always used aluPEX for doing the piping.

[Scoundreller]

> and discovered solder isn’t “glue”.

I see you’ve never had the chance to observe some of my PCB work!

[rzzzt]

"The bigger the glob, the better the job". Some solder joints are structural.