Ive done alot of reading on this, the house is c.1940-1945.
I need to dig up the orginal waste pipe in the basement, its 4inch CI with a really basic clear out, the idea will be to (under the floor) break off the old CI and connect it with a Fernco then fasion a new clear out. All bends are sweep as needed (as no designs in complete yet)
Thought i would check, i am ok with putting a shielded Fernco under the floor then covering with concrete?
In regards to getting a nice cut with a smooth finish, I just cut my 3" CI drain pipe with a diamond blade in an angle grinder. I made it through the cut in maybe a minute with a super smooth edge remaining. I tried a sawzall first and it was doing a pitiful job before I remembered that I had the angle grinder.