I have a cast iron pipe that I am trying to get inside of to clean out. It is an end cap and I can't seem to break it loose. The pipe is 50 years old and I don't want to shatter it by getting to agressive, so are ther any tips or tricks to getting these old caps off? I have already tried penetraiting oil with no luck.
It'* a plug in cast iron (old skool thick a$$ stuff). I just nought a MAPP/OXY torch setup and I'll try heat on it first. All else fails, I'll just beat the hell out of it and then replace it with a standard off the shelf home depot speacial.