That's true, but why is my common as dirt #3, 4", whereas my #6 is 6" ? Records are great vices, every maintenance shop I've been in had at least a couple. I don't remember seeing any that had been welded up. The jaws on the other hand, have been toasted.
Another option for Canucks, is a later model RAE, they are built on the Record pattern instead of the earlier American pattern. They are made of cast steel.