The metal ring on my closet flange was rusted away. I cut off the top of the flange with a dremel, which left about 2 inches remaining around the outside of the waste pipe. When I couldn't get the rest of the ABS off of the pipe, I Googled and learned about solvent welding.
I have no idea how to fix this and would greatly value your suggestions. The waste pipe is 3 inch ABS. I bought a 3 inch inside fit ABS flange. But, I've read that this size flange is to be avoided. It has a plastic ring, also best to avoid.
Any ideas would be gratefully received.