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I use an Antex 20 watt iron for soldering track joints with a 2mm flat tip with multi-core solder. One thing to remember when soldering track joints is to allow for temperature changes. If you live in an area with changeable weather, or as in my case, move the layout from a cool basement to a hot exhibition hall, put plenty of expansion joints in the rails. These are cuts in the rail, with a wire soldered loosly across the break, which allow for expansion and contraction of the metal rail. I found out the hard way at one summer exhibition, when my track started buckling all over the place by the second day. I put breaks in each rail every 5 feet or so, as wide as a Dremmel cutting disc, and have never had the problem since. Jon
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