How to remove all lead to allow welding?

It's lead people. If you have kids, DO NOT grind it off around them, or where they might walk in the summer without shoes. There is a hazard there that affects adults to a lesser degree. Wear a good respirator. I use a handheld MAPP gas or propane torch, the melting point is way below anything that would distort the steel. Get the paint off first to allow the heat to get to the lead. Do not let it run into your shoes.