Tag Archives: envrionmentally friendly wax

Understanding Base Structure

A very important aspect of a ski/board base is its structure. Recall from , a board or ski does not slide on snow, it rides on water. As the base moves over the snow, the energy from the friction melts the snow. The base then rides over a small pool of water. The water then re-freezes after the base has passed. Therefore just as a car’s tires has threads, a ski or board should have structure to allow the water to flow unrestricted.

Most interesting, not all skis or boards have structure. Usually, a new ski has a structure out of the factory; however as people have their skis tuned, the structure may gradually fade if disregarded. In the back room of a ski shop, tuning machines have the ability to remove and apply structure. To remove structure, skis are driven over a sanding belt. To apply structure they are driven over a stone grinder, which has been cut with a diamond to apply a pattern to the ski.

When an economical tune is applied, a fine sanding belt maybe used as the last step, thus eliminating any structure. A racer or high performance tune is usually finalized with the stone grind, which imbeds a new structure to the ski /board. (See photo).

There are many technicians that believe that the structure is the most important part of the tuning and should not be overlooked. A good structure will not only provide speed but better control. Be sure that your tune up includes a base structure!

Well Structured Base
structured base

Unstructured Base
unstructured base

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Pictures of Green Ice Athletes from around the World

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Beveling the Edge of a Ski or Snowboard

Beveling the edge of a ski/snow board

When tuning a ski/board it is important to take care of the steel edges. The edges are filed and then polished with diamond stones of varying grit to remove burrs and harden the edge. To better understand why edges are beveled, it is important to understand what happens during the tuning process.

The diagram shows a cross section of an edge and each step of filing the base and side.

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As you can see both the edge and base where filed resulting in a different shape. Since 3 °were taken off the edge and the base the result was still a 90 °angle.

Base and side angle increase performance of the ski/board differently.  If the 90 °edge/base angle was not modified it would be very difficult to ski/ride. The skier/rider would constantly “catch edge” and have minimal control.  Also steel does not glide as smoothly as the polyurethane base. Therefore, the base angle must be modified to reduce friction. The side angle is modified to grip the ice or snow on turns.

The typical angles used by manufacturers and shops are a 92° side angle and a 1° base. However, skiers/riders can change these angle based on the conditions of the mountain or the type of skiing/riding.

Base beveling tool

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Side beveling tool

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