Originally Posted by
peripatetic
I've used this method, and You're right--once you get the bolt/washer/fixed cup/nut removed from the bike, you've tightened it all down so much that they're effectively bound together. The only way I was able to get those nuts/bolts off was by re-attaching the fixed cup back on the frame and reversing the process. Perhaps using a vise and a big wrench would work, but I have no vise at my disposal, unfortunately.
Kroil is superior to PBlaster, though PBlaster's container is far more entertaining to read.
I've done this to a handful of fixed cups, and while the majority of them were torqued down really tight, i was able to extricate the hardware and the cup itself with a little bit of determination and brute force. If you tightened it down by hand, you can loosen it back up by hand, too.
-rob