I have been making Coffee Mills for several years, so when I saw a writeup in the Woodturning Design on how to make a scoop with great instructions on how to make the required chuck to hold them I just had to give it a shot. As you can see, the chuck is made of wood (Black Ash) and has 4 1/4-20 tpi screws that thread into T nuts on the back side. These screws pull the two haves of the chuck together holding the already turned scoop. The handle of the scoop fits in the hole that runs to the outer edge. Once in place, you hollow out the scoop to the capacity you want, in my case 1/8 cup.