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So flux is 'a crutch for people who don't know how to solder', because that knowledge would lead you to use 'expensive' flux-cored solder instead of 'shitty solder' plus flux?

I really don't think either's wrong, and anyway I assume 'production engineering' is not using how-to-solder tutorials.



Shitty solder + flux is wrong. Simple.

That is part of production engineering which is mostly about making sure that your product doesn't come back again because it's broken.


Yes, you're concerned with the yield on tens, hundreds of thousands of boards.

It's a different world from a hobbyist's one-off project. This advice was never intended for you, and appropriate advice can differ between audiences.




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