Diamond Pacific's Dop-Master system makes it easy to change from one stone to the next when grinding or polishing. Plan your cabochons with a template and scribe, trim your preform as needed, and use a DopStation wax melting pot to melt dop-wax to mount your preforms for cabbing. The Dop Master has a handy stone or acrylic base with 16 holes for storing mounted stones so you can dop multiple stones at one time. To change between stones and preforms, use the enclosed hex key to loosen the set screw, drop in a new dop stick (screw), tighten the set screw in the handle, and you are ready to work. Diamond Pacific's dopping system features a comfortable, 1/2" diameter x 4-1/2" long aluminum handle with 16 dop sticks (standard machine screws). You can easily add additional number or length screws depending on the number preforms you have in progress. Stone base color and pattern will vary.