Hi
In order to plumb-in a washing machine, I need to connect to the old cast iron soil pipe to carry away the waste. (The pipe is just over 4 1/4" diameter.)
Can anyone recommend a good way to cut the hole in the pipe, to connect a boss ?
I've seen an old post where someone recommended drilling a ring of closely spaced holes and then joining the holes so the disc can be removed. But I don't see how you'd be able to drill the holes closest to the wall.
Whatever the method, I don't want to risk cracking the pipe - presumably old cast iron is fairly brittle.
Many thanks
Steve