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Step 1
Ensure that the surfaces to be joined are clean.
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Step 2
Heat and clean the soldering iron. The iron should have a thin coat of solder on the tip (typically referred to as tip tinning). Over time, the tip becomes oxidized and turns a bit dull. Wiping the hot iron on a damp sponge removes the oxide.
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Step 3
Electrical applications use 60/40 solder (60 percent tin and 40 percent lead). Most electronic 60/40 solder has a rosin flux core. If the solder doesn't have a flux core, a flux paste is required.
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Step 4
Bring together the pieces to be joined.
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Step 5
Apply the solder iron to the joint quickly (this avoids overheating the work piece). The desired effect is that it should heat it up fast--in about two seconds.
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Step 6
Introduce the solder to the joint. The solder should flow into the joint. Position it so that the end is touching the heated parts to be joined.
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Step 7
Remove the iron and let the joined pieces cool without interference. Blowing air on the joint during cooling will result in a "cold" solder joint that is structurally and electrically weak. The joint should remain stationary during the cooling process.
