Here is a sure fire equation for disaster, but don't take my word for it look through the workshop at the pics...

Razor + Dremel + inexperience = Broken razor or injured restorer...

This are great tools in experienced hands, wonderful polishers, but as you browse the Workshop forum you will see plenty of threads about disasters with them...
For a begining restorer I always recommend hand sanding/polishing to start, then progress from there....