Winter project. Big-*ss heavy old tub. Probably cast iron. HEAVY!!! And it is not going down my stairs. Cut it? I have a 7" angle grinder is that viable? What blade would work best? Smash it? Tons of opinions out there and for every one that says smash it another says don't. I have smashed up a big old boiler before so I know how to do that. I am worried about shards of porcelain getting everyehere. So cover it with a tarp or blanket. Eye and ear protection and heavy coveralls and gloves. Sheet of plywood to protect the tile floor. Remove toilet and sink out of harms way. Any tips?