1 What Is Soldering?

What exactly is soldering? Fortunately, we can probably agree on what it is a lot more easily than we can agree on how to pronounce it! Is it sah-der-ing or soul-der-ing? How you pronounce it depends largely on where you live, so the debate will continue—but, really, how you say it is up to you!

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No matter how you pronounce soldering, in its most basic form it is a mechanical connection between two or more similar or dissimilar materials made by heating and melting a third “filler” material (see Figure 1-1). The two materials you’re joining do not melt during the process of soldering—only the solder melts. It’s a fairly ...

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