All 100% Lead. Poured just fine stayed on the hull through the worst of storm blown accidents.In the meantime....are the winged keels found on production sailboats always cast iron? Seems to me it would be tough to pour lead into that kind of shape.
DDWThis is why I use Lift instead of lift and Drag instead of drag. In lay terms they might mean anything. In fluid dynamics they mean a very specific thing. Regardless of intent or requirements.