I glued an ABS toilet flange to ab ABS pipe roughing. The fitting did not go down all the way and is 1/2" proud of the tile flooring. I now want to remove the fitting and replace with a new fitting. How do I do it without damaging the receiving pipe. Pipe is in concrete floor. Thanks, Bob

speedball1

You really should have been more careful in gluing the flange. Gluing two pieces of plastic together is sort of a misnomer. They aren't glued together. They are welded together.l The glue melts the plastic and they become one piece. In short, you're not gonna remove the flange until you cut it out.
Your best bet would be to cut the flange out at the floor line and replace it with a inside flange. If the plumber installed a closet wrapper to gtive you some space between the pipe and the cement then you may be able to glue in another flange. if not, then go with a inside flange. good luck, Tom