I have an old Filarmonica 8/8 'sub cero' I'm trying to get back up to snuff. There's a little chip in the edge, more like a hairline crack that goes into the blade a little ways; I'll probably have to lose almost 1/8 of an inch to get rid of it. I've never taken this much off a blade before, and I don't have a Norton 220/1000. Can I do this safely with sandpaper? If so, would 1000 grit be too slow, or should I do circles on 600?

Also, would you guys recommend getting the chip out before doing any more polishing with Maas? I'm afraid of the crack spreading where the blade is so thin...

I'm a real newbie when it comes to restoration, and I really like this razor, so maybe I ought to send it out.