My Niner has a PF30 to x type adapter in it. The bearings are stuffed so I’ve ordered a couple of new ones. Tapped one side out fine, the other side has collapsed and left just the outer race in the adapter.
There is nothing to get purchase on to drift it out.
So planned to give it a quick cut with the dremel. No dice it’s as hard as hell.

Any suggestions for a next move?

Slide hammer

Pipe freeze spray….metal shrinks in the cold , so spray the part you want off and whack that mutha

And this is why threaded is the future. Last time I had this I just chipped away at it with a screwdriver until the whole thing collapsed. And then bought a frame with a threaded bb.

Pipe freeze spray….

steel race in an aluminum housing, you’ve got that the wrong way round…