The Sigma S 200 stone grinder features a stone width of 200 mm, and the Sigma S 350 stone grinder is fitted with a 350 mm wide stone. The Sigma S offers a divided structure allowing the possibility of applying two completely different structures on either side of the stone.

This means you can pre-grind the skis on one half of the stone, and run the finish structure on the other half of the stone. The 32 pre-programmed grinding programs can be modified and safed individually.