Familiarity with irons is also good, and when used for soldering, we used the help of flux, but seems to flow into the interior of wiring wiring as well. The soldered electrodes lose to tin / lead solder, but the surface gloss is also good, the number of troubling species increased.
How about using lead - free solder?
Even though it is lead-free, it melts well and workability is good. The surface of the finish is also beautiful. I also have good sound quality and I will use it effectively for amp repair. Still cheap.