: If you're into electronics - either building your own stuff or repairing things - one essential skill you need to learn is how to solder. It's not as difficult as it might look. The thing to remember is that you're trying to melt solder onto two components to make a good, reliable electrical connection between them; soldering is not the same as welding, where you use heat to fuse metals together. Here are two good, short videos showing how to solder correctly. First up, Jonathan Hare of Vega Science Trust. Then, in the comments below, the slightly scary Mike Allen of Popular Mechanics.
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