Originally Posted by
operator
If you can engineer a tool that can withstand having a breaker bar put on it about 1M in length to break off sezied cup, i'll buy the first one you make
If you can remove a stuck fixed cup with any tool that uses those 6 little pinholes, I'll eat my hat. Use the Sheldon Brown bolt method on a stuck fixed cup. The OP has a nifty device for holding the left side while it's being tightened.