Re: NewB question
Most of the stuff I design and build has a simple bullnose. Mostly 1/4 but sometimes 1/8 or 1/2" radius. A crown molding, for instance might be simply a 3/4 by 3/4 glued and pinned to the top of the face of a 3/4 x 1-1/2. I use a "spin-saw" to bullnose the edges. It has a square base. I would be happier with a round base, though, then I could follow templates. As long as you are not removing too much material, these tools make good small routers that can be used one-handed.
Sharp bits are important, as always.
Make sure you cut it good and short, you can always splice a piece in.