Thanks and thanks for the thread. It's a very timely thread for me. I picked up somewhere close to 500 lbs of wheel weights from a local shop this morning. I'm definitely going to get a respirator for me and my son if he helps me. I didn't use one when I melted down the last lead that I got. I used fans to pull quite a bit of air through the shop while I was working, but you can't be too safe with this stuff.