Thread: Removing metal from the hollow

Does anyone have any idea on how to remove an excessive amount of metal with some type of either power tool or by hand. I have been sanding by hand in the hollow of the blade in the attached pics. As you can see, there is pitting that needs to ge sanded out. The problem is, I've been sanding for the last three days and have barely made any progress. As you can see, by the last pic, it is almost a full wedge, so I'm not worried about how much metal I remove. I thought about using my dremel with a sanding paddle wheel. Does anyone have any other suggestions?

Thanks,