We had lead water pipes until I was 10yrs old and I always used to crimp lead split shot onto my fishing line with my teeth, handled old lead sheet, cut it up and melted it on a stove in an old pan indoors for pouring fishing leads. I am nearing 80 now and still don't have lead poisoning so unless I've been extremely lucky I think your chances of getting sick from the odd bit of lead work are pretty slim.