Originally Posted by
old's'cool
I wouldn't advise wedging these tools in behind the crank with force in order to remove the crank. Doing it that way will result in the bottom bracket bearings taking the reaction force needed to separate the crank from the spindle. You don't want that.
No, the force is confined between the crank arm and the face of the bottom bracket cup. The bearings aren't loaded at all in the process.