It’s important that the fretboard is as close to perfect as possible. In this case, that means it must be completely flat and level. No matter how beautiful an instrument is, if the sound is not right it’s basically wall art.
The strum hollow must be first cut on a table saw and then shaped with varying grades of sandpaper. I like to use a power planer and belt sander for the rough shaping and specialty tools to insure the flatness of the fretboard.