How It’s Usually Done:
A ski’s core typically starts out as a flat “blank,” composed of different types of hardwoods that are vertically laminated together. In a vertically laminated core, separate pieces of wood are glued together with and adhesive interface (shown in red below) situated vertically and the wood’s grain running lengthwise through the core. Different types of woods may be used to build the core depending on the desired performance characteristics of the ski.
Once the laminated core blank is constructed, the top surface of the core is tapered, or “profiled,” with a machine. Once profiled, the core is usually thickest at its midpoint and becomes thinner toward the tip and tail. The bottom of the core remains flat, like so:
A ski’s flex is largely determined by the rate of taper in the core profile + the types of wood used to build the core + the pattern in which the woods are arranged in the laminate.
Ok, So We Have a Profiled Core. What Now?
In a conventional manufacturing process, once the core is profiled, it is placed in the mold with the curved (convex) side facing up. Then the core is pressed together with the ski’s other components: fiberglass weave, carbon stringers, base materials, etc.
The final camber shape of the ski, and that of the core at its center, is determined by the mold in which it is pressed.
Conventionally, a reverse cambered ski is pressed in the same manner as a traditionally, positively cambered ski. Both use the same tapered core profile with convex taper on top and flat core surface on the bottom (as shown above). Again, the profiled core, with convex side facing up, is bent against a mold using heat and pressure. In order to create a ski with reverse camber, only the press’ mold is shaped differently.
So…What Makes Flipcore Different?