An almost-nasty piece of ebony -- a little chippy, a bit of swirl in the grain. Simple in concept, make the bottom of the fingerboard and the top of the the neck flat, glue them together.
Once everything is flat, I lay the fingerboard on the neck, find the center, and clamp the fingerboard in place. Then I glue a couple little blocks on each side, to locate the fingerboard, and to keep it from sliding when I do glue it in place. You can see one of these little blocks below the left-most clamp in the photo above. This is not my concept, but straight from Johnson and Courtnall's The Art of Violin Making.
I'll leave the fingerboard in clamps overnight, then the next step is to start shaping the neck and root prior to fitting it to the body.