Remove this brass (?) threaded male from cast iron

salon_sue

This is my bathtub drain. This (I assume) brass fitting threaded into the cast iron stack was sweated to copper that had some issues. The copper was very soft and disconnected from the brass (?) fitting without much persuasion. Now I want to remove the brass fitting so I can replace it with PVC. Note this is in a ~2 ft crawlspace and I do not have leverage for a cheater bar because there's a concrete mound directly to the left. I've tried PB...

Originally asked by byte on Stack Exchange (diy) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

I posted this on Reddit, they suggested: Cut the nut part off the adapter with a sawzall leaving all the threads. Cut about about a 1 inch size piece of the threads out with your blade going into the drain. Try not to nick the female threads but if you do not a huge deal since it's at the top of the drain. With that 1 inch piece removed it will spin out with your pipe wrench. I did exactly the above: Cut off the nut. I cut at the very top (hopefully not too much, then 1 inch away, and a second cut but I didn't go all the way through Chiseled out the piece Spun freely with my wrench

Full answer by byte: https://diy.stackexchange.com/a/332298 (CC BY-SA 4.0).

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