I have all of the plumber's tools, including the asbestos running rope. The last lead joint I poured was 3 years ago.
Let me tell you my furnace and pot will get lead from cold to pouring temp. in about 7 minutes.
I use gloves when ladle or mold handles get too hot or adding lead to the pot, but do wash hands in cold water, which closes the pores, when finished.
The old plumber from whom I got the tools told me a story about his helper reclaiming lead and throwing some lead that had water in it in the pot . It sent hot lead all over the windshield of his van, which pitted the glass. Luckily no one got splashed.
Just yesterday I got given 165# of old lead pipe.