Germany Technology Hi-tech Driller
First, use the cup wheel to prepare the stone. It is a handheld, high-speed tool to shave off the unnecessary crusts on the edges and give it an even finish.
Later on, move to the stone router machine to fabricate the edge profile of the countertop. Run some water through the machine to reduce the heat and for consistent profiling while the machine runs at high speed.
To prepare for polishing, smoothen the edge first. Once the edge is perfected, then move on with the flat surface of the countertop.