Originally Posted by
RubberLegs
I had a badly stuck BB Cup, soaked it in penetrating oils and all...the thing that finally worked was a good heavy cold chisel and heavy hammer, smacking it firmly at a low angle...CAREFULLY....Finally got it to break loose. It was chromed steel in a steel frame...lots of rust.
I saw a mechanic remove a very stuck BB by welding a piece of steel to the fixed cup to hold in a vise, and using the frame as a lever. But I think what really loosened it was the heat from the arc welding...