[SRGN]

Lead has been the longest lasting. A little bit of plastic as the final layer saves time, and is thin enough to last quite a while.

[Cammer-6]

Originally Posted by SRGN

Lead has been the longest lasting. A little bit of plastic as the final layer saves time, and is thin enough to last quite a while.

seal between any filler and the lead
and rinse rinse rinse the lead

[HoovDaddy]

I think most people are afraid of lead along with the extra time it takes and lead bars and materials are a lot more expensive than a can of polyester filler. I've been using lead on roof seams and the rest of the body for 57 years. Lead files easily by hand. I've never used power tools to take it down. Never had it crack. Nowadays I coat the lead with epoxy and block sand over it, seldom needs any putty.

[SRGN]

Originally Posted by Cammer-6

seal between any filler and the lead
and rinse rinse rinse the lead

Yeah I found that out the hard way when I was young and learning. I'm no longer young, but still learning. I epoxy prime every substrate before I put plastic on these days, with the exception of daily driver junk.