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Soldering Nickel Silver Rail to Printed Circuit Board
Jason sent in these soldering tips to share:
When soldering nickel silver rails to PC board ties both surfaces need to be thoroughly clean and oil free. You can used an acid based flux for cleaning the surfaces, which will help produce a good looking, reliable solder joint.
When doing this you are not building an electronic circuit, so using an acid based flux for turnout construction is okay. Unlike with electronic circuitry, the soldering joints will mainly provide mechanical strength, so that the completed track can easily be scrubbed clean using a wire brush to remove the acid residue.
The word “acid” sounds frightening, but the acid in acid based flux is really quite mild, and as long as you use a wire brush to thoroughly scrub clean the track, you shouldn’t have any problems.
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Its not necessary to scrub acid soldered joints. Scrubbing with wire brush will not remove acid residue anyway. Just wash with mix of 50% baking soda and water using a stiff brush. Soda neutralizes the acid. You only need to make up a teaspoon of soda and the water. When done neutralizing, wash carefully with running water to remove the soda residue.