I read back. I started the post talking about radiusing the fret board, and gluing it on. Once I had gone there mentality, I referred to the neck radius... Meaning the neck with the fret board already glued on.
The back of the neck will get carved. There are several shapes that folks have preferences about. C shaped, V shaped, D, etc. In going to attempt a non symmetrical shape called Wolfgang. It's fatter on the bass side so it fits snug in your grip, but thinner on the treble side, so you can wrap around and reach the thinner strings for leads.
I'll find a link.
HERE
AND HERE