[mt_enthusiast]

I had a 40 Watt iron and a 100 watt soldering gun from Radio Shack. Neither worked and I thought it must be tough to make a good set of batteries. MetalMan confirmed these weren't good enough from the problems I described. I bought the $10 60Watt soldering iron and resin core solder from my LHS. Works well! For reference, the iron is Hobbico and the solder is Kester rosin core with non-corrosive flux.