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The further down this thread, the better the advice gets! I, too, am an ol' geezer that has melted a pound or two of solder in his time. I always look for iron plated tips, because the iron amalgamates with the solder very slowly indeed, thus the tip will give good service for a long time, much longer than copper. The damp sponge is absolutely necessary, most especially when soldering delicate electronic assemblies. Acid core solder is only for plumbing! If mechanical strength is needed, use 95/5 tin-silver alloy. In addition to having a higher tensile strength than tin-lead alloy, it is far more resistant to "cold flow," which is where the solder acts like extremely cold molasses! A slightly corrosive flux is required with this, so wa***he parts well and don't use it at all for electrical connections. tebo41, GM, B&FtNRR
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