Place the rock into the bench vise.
Mark the area where the hole will be drilled, using a marker.
Fit the power drill with the diamond bit in the diameter of the hole needed in the rock.
Squirt water onto the rock surface.
Put on eye goggles and gloves.
Drill on the marked dot, stopping every minute to prevent the drill and rock from over heating, which may cause the rock to crack.
Squirt water onto the rock and in the developing hole as you progress, to keep the rock cool and to lubricate the rock for the drill.
Continue the drill-water-cool process until the drill bit goes through the rock.
Squirt water through the hole to cool the rock, then remove from the vise.