Went to Silver Dollar City and watched a woodturner make one of these so I asked for info and bought a piece of cherry and came home and turned my own.
I didn't design it; I watched a woodturning do it and went home and made my own. It is a great christmas gift for someone who likes to make homemade pasta; I saw a noodle roller too that I want to make (there are pictures online). I suppose the few things you really need to know is that the blades are an 1" apart and have to be perfectly even in height and depth, tapered down to a 1/4" at base the blade, and 3/8" deep is what I reckoned. The cherry was a perfect wood. Use CA glue if you come to a soft grain on those blades; I luckily got good grain all the way through.