Removal of drain extension pipe at the wall under bathroom sink

Question

I'm replacing the drain pipes under my bathroom sink and having trouble removing the final section behind the escutcheon that connect to the wall fitting. I have a metal pipe extension pushed into a brass nipple fitting at the wall. The extension is  trapped in the brass nipple via a washer that is internal to the brass nipple so I cannot pull it out without removing the brass nipple. The nipple has a hex nut but it's inset in the wall behind the tiles. I cannot turn it without removing tiles and causing wall damage. What to do? 
Photo links:
https://i.imgur.com/NmUOyOz.jpg

David McNeill · Answer

Cut the extension pipe off close with a hacksaw.

Then use a regular socket on the brass nut.

PennyPincherWannaBeHandyMan · Answer

You could always cut into the wall just enough to do your work and then put a larger cover around the pipe to hide your mess. I'd find the cover first before cutting the wall so that you know for sure how much you can cut.

Answered by PennyPincherWannaBeHandyMan on November 26, 2020

Removal of drain extension pipe at the wall under bathroom sink

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