That looks really rusty. You can remove the rust with a gummy stone or steel wool and then sharpen the edges but with that much rust you might wind up losing quite a bit of the existing edge just to get it back to clean metal and that’ll make the edges more prone to cracking.
That looks really rusty. You can remove the rust with a gummy stone or steel wool and then sharpen the edges but with that much rust you might wind up losing quite a bit of the existing edge just to get it back to clean metal and that’ll make the edges more prone to cracking.