Hi Bernie and welcome. This is one possibility but they only go so small and the deciding factor on whether one would work for you is how much clearance is there between some of the "arms" in those letters. Industrial router bits-Ovolo router bits-CMT tools I think there might be similar ones for a Dremel that would be smaller but I would have to research that.
I'm assuming that you were doing these freehand by the way.
I'm assuming that you were doing these freehand by the way.