As a retired big truck diesel mechanic I can guarantee that heat goes up and water goes down on this planet. The previous suggestion are Good with the addition you can put an alligator clip where you are soldering to as close as you can to help conduct the heat away from the ties. I use the bigger weller GUN and leave 1 side of the tip dirty, this throws more heat to the side you are working with. Hold the soldering tip against the rail and apply a bit of solder to the tip and rail at the same time. This is a heat bridge then add a little solder to the junction of the tip when it gets liquid. Get off instantly. Then use the same procedure with a tinned wire. Hope this helps. Charlie
|