i am in the middle of the process of casting my lead ballast for Atkins' Economy Jane. It is not a huge cast, 815 lbs.
my question relates to using a cast iron bath-tub which i have researched and found to be a common pot to melt lead in. we had our pipe elbow system set up, to tip the pipe down into the burried mold once the lead was completely melted but had a leaking failure early on before all was melted so we shut down the fire. the seal we made with washers was not tight enough around the drain hole for the bath-tub.
there must be a common fix for this problem. what kind of hardware and drain have people used in the past? we are not able to weld anything to the cast iron so it needs to be a bomb-proof seal.
thanks kindly! this is urgent as i hope to attempt again soon.