Hi Richard,
I agree with the excellent advice given here so far, keep away from power tools and as Jens has said, some time and elbow grease will present its own rewards. As always, I think this old warrior deserves to be saved, and admire those who will take the time and effort to do so (beautifully done on your blade by the way Jens!!).
All the damage has been done to this poor sword, so here is an excellent opportunity to learn from some barbarians travesty of ignorance...good grief! Give a moron a grinding wheel !! Grrrr!!!
All best wishes for your project, please keep us posted OK
Best regards,
jim