Reply To: Did I just ruin my coil

[JOSEPH BRINCAT]

One note on the proper technique for soldering to a coil terminal… to minimize the amount of HEAT transferred into the coil winding one must use a HOT soldering iron with sufficiently large thermal mass to melt the solder and make the joint quickly. In practical terms this means using a large tip HOT iron. Using your average pencil soldering tool meant for delicate electronic work is not good as it will take considerable time to get the joint up to melt temperature, meanwhile pumping heat into the coil.

Joe B