Beginning Lapidary, Part 2: Grinding Polishing Facet ...
Purpose: A series of grinding wheels or flat laps, each one a finer grit than the last, used to shape and polish preforms into cabochons; can also be used to create flat stones, inlay work, and intarsia Good to know: A water reservoir is attached to the machine, usually above the grinding surface. Water is slowly dripped, generally using only gravity and tubing, onto the grinding .