I am replacing a bathroom vanity and while I'm doing that, I'm also replacing the p-trap for the sink (mostly because I want one with a drain, but also because I have to raise the height a couple inches) . Right now, there is a 1 1/4" female drain connector sticking out of the wall (which takes 1 1/4" I.D. pipe). The old P-trap was made of metal:
My intention was to use a standard 1 1/4" ABS P-trap, however, ABS is 1 1/4" O.D., and the drain connector takes 1 1/4" I.D. The edge of the connector is about 1/8" recessed from the drywall, which will make cutting that piece off and attaching a coupling fairly difficult, though may be possible. I don't want to actually open up the wall (as you can see, I'm already in the process of patching the messy hole someone made for this pipe).
Anyone have any better suggestions?