Quoted from kermit24:The temperature control on the cheap irons is absolutely terrible, it is going to fluctuate like crazy. Do not use them on circuit boards. Coil lugs I guess is ok, but I wouldn't touch one.
I would like to get better at soldering so maybe I might buy the Hakko. I use a $25.00 one right now and it gets hot that it almost melts the coil lug off. If I get the Hakko how do I know what is the right temperature to use?