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Good enough, but the title is misleadingly broad. If you're looking to solder together two copper sheets, as would be done in roofing, then this is the video for you. That's the one form of soldering shown. But if not, well... I'm not a soldering expert (obviously, or I wouldn't have wanted the video), so I don't know how applicable the demonstrated techniques are. Seems likely to me that they're not a general approach, so the video's potential I-find-this-valuable audience is rather limited.