I knew this was coming........... LOL
Im not sure what the lip of the drum is made out of (its not the same as the side, which is porcelain coated steel), but it was VERY unhappy with me welding on it. no matter what I did I could not make it weld right. I took a hammer to it & it held, so I called it a day. its held for >10 years now so Its gooder enough. LOL. it was like I was trying to weld with no gas on, super strange.