I need to remove a stuck fixed cup; the BB is a shimano type square taper sealed unit. I plan on soaking it in PB blaster. The tool I use for BB removal and installation is this unit from LIFU:



I just hold it place with my hand while turning the tool with a large crescent wrench.

This is going to be a tough removal process. Is there a good way to run a bolt of the right threading through the tool to screw it onto the axle? That will hold the tool securely in place while I try to turn it.

Is there something better than shooting the BB full of PB blaster in trying to free up the fixed cup? Is there a better tool than this that I should get?

As a bit of an aside, I picked up this pretty much immaculate looking 1996 Bianchi Volpe earlier this year. The paint job is almost perfect and the parts look very good. But whoever put this together was clearly allergic to grease and probably decided to leave the bike out in the rain for a day or two as a sort of experiment. I had use a hacksaw to get the stem off; the pedals were more or less terminally stuck as well. And, of course, the fixed cup is stuck as well,