I'm assuming these days that WW's don't have much tin in them to begin with, and that antimony isn't going to seperate, oxidize or float the way tin does, but I would still like to make sure I'm keeping all the hardening agents in my melt the first time I remove the dross (clips, dirt, sandwich wrappers, etc).
I want to keep the good stuff, but don't want to keep stirring the dirt, clips and impurities including zinc, back into the mix. What is the best way to handle that intial fluxing and dross removal?