I'm replacing a bathroom basin sink with a vessel sink. As a result, I have to move the sink drain. Normally, I'd cut out the old PVC pieces, and graft pieces onto the bare pipe to recreate the drain in the location that I need.
The problem is that there are female adapters butted up against each other stretching from the wall to the old sink. There is no bare pipe where I can cut away the old adapters and have something to which I can bond. I don't relish the idea of cutting out the plaster to get at the pipe in the wall, but I also don't want some hose-clamped kluge with accordion drain pipes or other half fast solutions.
If the drain pipe is pvc carefully cut two or three notches through just the hub of the butted female adaptors (about 1/4" deep) and cut the pvc pipe off on the end of the female adaptor closest to the sink drain. Then use a straight blade screwdriver like a chisel and a hammer and knock the hubs off in pieces. Sand the pvc pipe smooth so a new hub will slip on fairly easily and go back and build your new drain line to fit.