Solder is not equal to solder and I'm not the Indian goddess Kali with six hands. Often the complicated soldering on boards are also soldered with solder that at temperatures around 400 ° C do not even beeping makes, let alone liquefies. Then I always have something given from my tin solder and thus to reduce the threshold to deliquescence. This soldering iron, desoldering or Entlötkupfer and tin keeping was difficult. Now I have to make two parts in one and can for desoldering solder yet. However, I need that in 80% of cases no longer, because the soldering iron with integrated Lötpumpe is obviously hot like my soldering iron in the soldering station. That saved me in the repair of a Fritz box ....