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Old 12-04-2010, 12:09 AM
makana makana is offline
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pure solder doesn't work well, the resin core is a cleaning agent that helps remove impurities and allow the solder to stick. If you are having to scratch at the metal to get it to stick then it isn't clean. You could try cleaning it with alcohol or scuffing it up with a scotch brite. You need to get the metal hot enough for the solder to bond without overheating it. When the temperature is right if you dab the solder on it will travel along the metal. If you are soldering to surface mount copper pads on a circuit board be carefull. If it is clean it shouldn't take much to heat it up. Too much and it will lift the trace from the board.
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