The blade I'm currently working on has a couple of scratches and one pit that defy my efforts to clear up. Even after 4 hours of 60 grit sandpaper, they are staring me in the face. I'd show some pictures, but I can't take photos worth beans and nothing but a shiny blob is visible.(I'll be asking about how to take clear pics later)

I'd like to move on, but those blemishes really bother me. Can I continue, or is there a danger in damaging the blade using such coarse grit levels?