I'll take your word for it. But.. I wasn't suggesting a Dremel with a carving attachment.
The way you describe scratching it of with a dull knife..sounds like dremel work. You know they make polishing pads for the dremel that will buff an item fairly well..
That's not viable?
Can you post a pic?

"If it turns out that President Barack Obama can make a deal with the most intransigent, hard-line, unreasonable, totalitarian mullahs in the world but not with Republicans? Maybe he’s not the problem."