Plumbing – How to remove the sink drain in this situation


I am replacing the faucets/drain in one of my bathrooms. I am trying to remove the drain, but I'm having a lot of trouble. I think it might be soldered on, but I'm not sure why it would be. What's the easiest method for removing the drain?
(below sink)

enter image description here
(above sink)

Best Answer

Here's a diagram of the drain:

enter image description here

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.