I recently picked up a Miller Falls 22c (22" corrugated)... basically a Stanley 7c. The iron in it is severely cambered... about 1/16th. Not to open the cambered / non-cambered discussion, I want to re-grind this to a flat blade. I don't have a grinding wheel and this is waaaaay too much material to try to remove w/ 80-grit on glass.
Does anyone have a suggestion of what to try? I've got files but none of them are fine files. I'm also leery of filing an edge so far away from my desired 25* that I end up spending hours on the 80-grit anyway.