Water vaporizes at 212 degrees. Molten lead is typically around 700 degrees in the typical lead pot. It doesn't take much math to figure out the danger in a situation like that. Do-It Corporation , manufacturers of sinker and jig molds provides information about other dangers of working with lead with all their molds. Here's what they have to say about things people should remember.
Lead poisoning is an accumulative effect caused by taking more lead into the body than it can expel.
Each of us has some amount of lead in our body. A physician can obtain the current reading of your personal lead blood count if you are interested. While there is disagreement within the scientific community about what level of exposure to lead is cause for concern, there is no disagreement that overexposure is harmful. Instructions are furnished with lead hobby products to inform you of steps that you can take to reduce your exposure to lead. Melt lead in a well ventilated area and exhaust fumes to the outside.