Share 'Scalloped Fingerboard, Tricks?'

I recently acquired an early 19th century French (1820-30?) guitar with a scalloped fingerboard. I'm planning on making a reproduction of it and having never done a scalloped fingerboard before I am hoping I can get some hints on good techniques for doing this.I've seen a couple articles online which advocate the use of a small electric contour sander but I'm not convinced that's the best way to…