I am just getting started in casting my own and am looking for some advice. I have managed to gather up a five gallon bucket of lead from electrical wire from a friend that was used as insulation. I also managed to gather up about 2/3's of a bucket of WW's and need to know if i should clean them before i make ingots from them. If I should clean them what is the best process for doing so? thanks in advance for the help!