Originally Posted by
SpikedLemon
Thanks guys.
The M8 screw idea to retain the tool is a brilliant idea to allow me to get more leverage without the socket camming out of the cup.
If that fails: cutting
This is what I use.
You'll have to adapt bolt length/washer stack for your spindle length.
I'd suggest getting some REAL penetrating oil.
Lay the bike over on the NDS, level as you can, and apply through the shell to the threads so that it can run into them.
Let it soak for 20-30 minutes.
Rap the cup with a wrench or ??? to "vibrate" the oil in. Light taps, not heavy handed swings. Pretend you're ringing a bell.
Repeat a couple more times.
Remove cup.