Composites provide the majority of the torsional stiffness in a traditional
sandwiched construction ski. On the other hand, a vertically laminated wood
core with grains running lengthwise along a ski provides the longitudinal
support, but very little lateral support. By combining composites with a
properly laminated wood core, you achieve stiffness and support in several
The most common types of reinforcements include: fiberglass, carbon fiber and
Kevlar. These types are often referred to as fabrics and they are usually woven
with fibers running in various directions. In general, the strength of the
fabric is associated with the fiber direction. Some patterns include: biaxial,
triaxial, or even quadraxial fiber. This means the fibers are running in 2, 3,
or 4 directions, respectively. By having more fibers running laterally across
the ski, you can create a ski with a lot of torsional rigidity.
Preparation Composites usually come in large sheets of
fabric. Prepare the composite by simply cutting the fabric so that it
overlaps the ski's edges by a generous amount as shown. The excess fabric
will be trimmed away during the finishing process.
While in storage, keep the composite as clean as possible. Store away from
areas prone to dust or other particles.