I understand, I got the melting tools at a garage sale once. There was a burner fixture that mounted on the old style propane 30lb. tank. It had a place to rest a small iron ladle with a long handle. It holds about a cup. I have melted lead for chess piece molds with it. It came with some spoon-like tools to jam the oakum into the joint. They have clamp devices to hold in the lead if you're doing horizontal joints too. I guess you layer lead, oakum,lead, oakum, lead. I'm sure a plumber here would know. I worked at a house very close to the ocean, and the pvc closet flange steel part would rust out! The salt air penetrated everything down there.
Also cast iron dampens sound very well.
Ya wanta feel confident when ya drop friends off at the pool
There was an episode of Dirty Jobs with Mike Rowe, he was up in Alaska, they had a poop incinerator made out of an oil burner and a 55 gallon drum.