I have a circular piece and wood and want to carve a circular 'inset' in the middle - roughly 1-2cm deep (so that there are 'raised' edges all around a 'depressed' middle). What tool would I use to accomplish this? Am I looking at using a dremel? Novice woodworker, so forgive a probably-obvious question.
In the above, the black section represents the area I would want to cut out.