Help! Minor project turning major

[JM2860]

I'm just learning the terminology here, so bear with me. Wife's earring went down the drain. When I removed the P-trap, the connecting PVC segment going into the wall ("sanitary-T"?) was very loose - not a tight connection to the pipe behind the wall. Looks like somebody gave up trying to do it correctly. I want to make it right but can't figure it out since I have little plumbing experience. The attached picture was taken while lying on my back looking up at the connection. It looks like there is a metal "slip-nut" (female) screwed onto some sort of connector that has two exterior-threaded ends (both male), one end attached to the slip net and the other going into the "sanitary-T". It looks like the nut is actually screwed into another fitting before going to the main vertical pipe. I thought the proper thing to do would be to remove the slip-nut and screw on a metal Melvin connector, as I saw in a video, with one female end and one male end. And then attach a plastic pipe to the male end with another slip nut, and that segment of pipe would go to a new P-trap (?). BUT I CAN'T GET THAT METAL SLIP-NUT OFF! - if that's what it is (?). I'm not even sure. It's hard to tell. Anyway, I've already removed a bunch of drywall in order to get a decent grip with a pipe wrench. Tried a small wrench and a monster wrench, and couldn't get the nut to budge, but I don't have much room to work with. Considering something more drastic like removing the cabinet and sink and cutting away even more dry wall so I can really get the large wrench in there, but I'm afraid the nut still won't budge and may actually get damaged so it will never come off. Also thought of just sliding another PVC or metal pipe into the the joint, as is, with just some sort of adhesive to hold it, but it wouldn't be a smooth, tight fit. The inner surface of the metal is not exactly flat cuz it's not one piece and is actually 2 fittings (I think), so I don't think it would be a solid connection even with the adhesive. Any advice or clarification on what I'm actually looking at? Really can't afford a plumber right now.

 

[Twowaxhack]

Carefully cut the nut off with a dremel.

Wire brush those threads afterwards.

Then install this according to the directions.
https://www.amazon.com/Oatey-39239-Installation-extension-threaded/dp/B000RUL1WY
Or you can cut everything out and start from there......not recommend for a novice.

 

[Twowaxhack]

The pipe is cast iron with a brass trap adapter.

That’s a threaded cast iron 90. You’ll never get that apart on one piece. Don’t try.......

It was called the Durham system.

 

[JM2860]

Twowaxhack, the slip nut on the end is not cast iron though, it's softer and shiny. Can't that be removed and a plastic pipe with slip nut be attached?

 

[Twowaxhack]

Twowaxhack, the slip nut on the end is not cast iron though, it's softer and shiny. Can't that be removed and a plastic pipe with slip nut be attached?

The chrome nut is brass or zinc alloy.

Cut it off with a dremel. Don’t cut too deep.

Cut a slit in it front to back, then use a flat head screwdriver to insert into the groove and twist. This will crack the nut.

 

[MrInfoPhilly]

2 Things., Buy Penetrating OIL [homedepot PB Blaster]., spray inside and outside of Threads., Get a 2 small pipe wrenches., maybe a right angle pipe wrench (OR) a pipe wrench and hit it with a mini sledge hammer., Penetrating oil will loosen it up., wait a couple ours after soaking it. then use wrench and a mini sledge. remove it till its just the female threads., and switch to plastic.

They may have used joint compound that cures.,

 

[BlueSkyHigh]

Wife's earring went down the drain.0

I like TWH's approach with "Dremeling" off the nut and it goes without saying to wear eye protection. But, more importantly, did you retrieve your wife's earring?

 

[Twowaxhack]

I like TWH's approach with "Dremeling" off the nut and it goes without saying to wear eye protection. But, more importantly, did you retrieve your wife's earring?

The threaded joints of the pipe have a habit of breaking off. That might happen down in the floor or wherever it goes. That would be a deep lose.

It really all needs to be replaced.

 

[JM2860]

Thanks for all the suggestions guys. I was able to get the nut off with a Dremel tool. And yes, I did recover the wife's earring. Stayed in the trap fortunately.

 

[TomFOhio]

Thanks for all the suggestions guys. I was able to get the nut off with a Dremel tool. And yes, I did recover the wife's earring. Stayed in the trap fortunately.

She was lucky. Most people run water after dropping something in the sink. What do they think, the water is going to bring it back up
out of the drain??????????????????????

 

[MrInfoPhilly]

Thanks for all the suggestions guys. I was able to get the nut off with a Dremel tool. And yes, I did recover the wife's earring. Stayed in the trap fortunately.

wait., you got a nut off with a dremel? How that work?
Lorena bobbit?