The ski/board is then run across the stone grinder removing any minor damage and making the base flat and true. In doing so, tiny cuts are ground off and the base becomes true and flat. Now the base is able to absorb wax and the structures created are an important aid in gliding. This new structure also helps prevent suction and friction between base and snow. Your ski / board glides better and accomplishes the transition from edge to edge more easily. In addition, different temperatures and snow conditions require different structures - only the technician knows the right formula.