For most conditions, pick one of our listed grinds - these have broad ranges and can be used in virtually all common conditions. For other "special purpose" grinds, contact us.
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World Cup Structures:

In 2009 Nordic Ultratune installed a new Mantec Ski Numericontrol 140 CNC stone grinding machine. This new Mantec grinder is the most advanced machine in North America today. Ultratune is working closely with Italian serviceman Stefano Vuerich who has shared some of the best World Cup structures. These are now available as the core of our grind menu.

• D5 - The D5 is a World Cup grind from Stefano Vuerich of Italy, and has had success at the highest levels. This grind has a visible symetric angled interference pattern. An excellent general purpose grind for medium humidity, new and machine-groomed snow conditions. typically 0C to -5C
• i5 - The i5 is another World Cup grind from Stefano, and has proven itself to be very versatile and is a winner at the highest levels. This grind has a visible angled interference pattern. An excellent cold grind for medium humidity, new and machine-groomed snow conditions. typically -2C to -10C
• S2 - The S2 is from Stefano Vuerich of Italy, and has had tremendous success at the highest levels. This grind has a visible symetric angled interference pattern. The interference pattern is visually "busy" but in truth it provides angled bands of less structure. The S2 has a very easy release. It is a delicate structure and is intended for colder conditions. It's not a grind for wet conditions. It will run well in colder new and machined groomed snow (transformed by grooming rather than thaw/freeze) that stays below freezing; typically -5C to -20C
• S1 - The S1 is for very cold and dry conditions. The S1 grind has a subtle angled interference pattern, and skis smoothly and with a very easy release. It is a delicate structure and is intended for very cold, new, dry, fine grained and machined groomed snow (transformed by grooming rather than thaw/freeze) conditions. It's not a grind for wet or transformed conditions. Typical range of -10C to -22C
• M1D - Excellent on skate skis in moist and transformed snow conditions. Also performs well as a klister grind for classic skis. M1D is for transformed large crystals, warm new snow, and moist conditions. The M1D is another World Cup grind from Italy.

Linear Structures:

Nordic Ultratune continues to offer several of the traditional linear structures. These are versatile, high-performance linear structures that cover a broad range of temperatures. The Nordic Ultratune Mantec Ski Numericontrol 140 CNC stone grinding machine produces very precise and well defined structures with the best reproducibility.

• MVL - A half-depth linear grind at 24 lines/cm. Good general purpose grind for medium humidity, "Cascade east slope", and other generally sub-freezing conditions. Typically runs better than XC02 as temps get warmer and humidity is higher. Most often picked for classic skis, but runs well on skate skis in some conditions.
• XC02 - Fine, dry snow at lower humidity down to -10/-20°C; will work effectively up to -1C in very low moisture conditions.
• LJ03 - General purpose, large crystals, and transformed snows, from "violet" and down to -5°C; will work effectively up into "plus degrees," especially good with classic skis.