I'm trying to get this pipe out but I have no idea how to remove it from the sink. Any ideas?
How to remove bathroom sink drain with no lock nut
bathroomdrainsink
Related Solutions
Here's a diagram of the drain:
It looks to me like you've unscrewed the nut, but not the flange (which is a separate piece that screws to the inside of the tailpiece, while the nut screws to the outside of the tailpiece).
If things are not loosening easily, you can try some penetrating oil or WD-40 and letting it sit for a while, it may help if there is any rust or corrosion on the threads. The place this would cause a problem if anywhere would be on the outside at the top of the tailpipe.
The stud you would use a hole bit that is the same size as your piping to cut a circular hole. You can pick up these bits at big box or a place like Harbor Freight in the US.
You do need to make sure that the stud is not load bearing! If it is or could be we need more info and pictures.
It really looks like you have PVC but we can't see everything. If you need to go from PVC to cast iron use a coupling.
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Best Answer
Pliers and screwdriver are a poor substitute for the proper tool. ( They may or may not work but are not easy to use and may result in bending or damaging the thin metal of the drain basket without getting it to turn )
The proper tool is a Drain Removal Wrench
It has two ends, one small one large, with nubs that fit into the slots of the drain. It has flat sides so you can get a large adjustable wrench ( crescent wrench ) on it or It has holes in the handle so you can put a screwdriver through them to act as a lever for turning leverage.
You need a way to keep the pipe and basket underneath form turning and since you do not have a tradition basket with nut you will need a strap wrench or adjustable pliers ( channel locks ) to hold the pipe assembly. It will probably take 2 people, On to hold the assemble under the sink while the other try to turn the drain wrench counterclockwise.
Based on the photo it has some corrosion and If this does not work you may have to cut it off from below with reciprocating saw ( saws-all )