Then, they screw the bindings to the skis. Once the glue dries, they adjust the bindings and test them for the appropriate release.
Binding toepieces need two adjustments to match your boot in length and pressure. Your boot sole length, a millimeter measurement, is usually imprinted on the heel or side. Using a screwdriver, the technician adjusts the toe piece for that length.
The toe height or pressure needs to match your boot, too. Some bindings automatically adjust the toe height to the boot; others require a certified technician to make the miniscule adjustment of less than half a millimeter. This allows your boot to work with the Anti-Friction Device (AFD) that sits below the toe.
HEELPIECE AND BRAKES
To fit the binding heelpiece to the boot requires slipping the binding snug against the heel of the boot. Using a screwdriver, the technician will slide the binding into place and then test it. If jammed too tight, the boot will not release; if too loose, the boot will just slip out.
The technician will also check the ski brakes to see that they are the correct width for your skis and that they work properly. The brake arms should lay flat or parallel with the ski when the boot is in the binding. When the binding is released, the brakes should angle down and back.
ADJUSTING THE DIN
Once a technician has adjusted your bindings to fit your boot, the next step is to adjust the DIN. On both the toe and heelpiece, the technician will rotate the screw to your DIN setting. DIN settings are visible on top of the binding toe and heelpiece.
DIN is an acronym for Deutsches Institut für Normung, which has been adopted internationally by the ski industry. It refers to the force needed for a binding to release a boot in order to reduce the potential for or the severity of injury.
Remember those embarrassing questions the ski technician asked when you brought in your gear (weight, height, skier type)? Here’s where they come into play.
The DIN uses your stats to arrive at a number to guide the binding release. On your binding, that number is set on the toe and heelpiece.
How do the DIN settings work? The lower the setting or number, the less force it takes for your binding to release. This is especially important when your body is going one direction and the skis another. Bindings that release can prevent torqueing knees in the wrong direction.