Since no one has mentioned it on this thread yet, just to make sure you don't mess this up like I did, do this outside, and not on the kitchen stove. Cause if your vent hood is anything like the one in the apartment I lived in years ago when I made this mistake, it will not suck up enough smoke to prevent filling your home with smoke. Like has been said, it will help flux the lead, and the lead is prefectly fine to use, just keep the smoke in mind so your wife doesn't come hunt us all down one by one.